All MFN blog – Page 136

Fearing the Gym after Injury or Illness

Matt Cavallo/15 December 2014/ All MFN blog, Conditions/

One of the activities my wife and I used to really enjoy doing together was going to the gym. We had a personal trainer named Eric. Eric was funny, knowledgeable and understood how to maximize the workout for both me and my wife. Having a personal trainer that understood both our individual needs kept us motivated to workout. Eventually we moved and got a gym membership. However, we did not sign up with a personal trainer and the gym experience was no longer that unified activity we enjoyed together like we did when we worked out with Eric.

The Potential Danger of Acrylamide

Today's Dietitian/22 November 2014/ All MFN blog, Conditions/

This chemical in foods has been shown to cause cancer in mice but more research is needed to determine its risk in humans. Did you know that if clients broil, fry, toast, bake, or barbecue starchy foods, such as bread and potatoes, they can increase their intake of the chemical acrylamide? The more the food browns, the more acrylamide is present.

The Hip Complex: Understanding the Science Behind Both Movement and Dysfunction

Chris Gellert/19 November 2014/ All MFN blog/

Introduction

The foot is where movement begins requiring mobility to initiate daily and sport specific movements. However, the knee however, requires stability with daily movements, but more importantly, dynamic sport movements such as soccer or football. The hip, like the ankle, requires mobility, to perform such simple movements as sit to stand, climbing stairs and other functional movements. In this article, we will review the anatomy of the hip, common injuries to the hip, functional assessments and training strategies to work with clients with previous injuries.

Hip joint with supporting ligaments

Let’s look at the basic anatomy of the hip. The hip joint is a multi-axial ball and socket joint between the femoral head and the acetabulum, similarly to the shoulder joint. The hip is surrounded in white, several ligaments that provide support and stability.

The labrum attaches to the acetabulum deep within the socket between the femur and acetabulum. The joint is covered by a capsule blended with three strong ligaments: iliofemoral or “Y” ligament, which resists extension, the ischiofemoral ligament, which resists extension and internal rotation, and the pubofemoral ligament, which resists abduction.

Muscularly, the glute medius and minimus are located along the anterolateral aspect of the hip to stabilize in the frontal pane, whereas the glute maximus, is located in the sagittal plane posteriorly to facilitate hip extension.

Supporting muscles around the hip

Common injuries and causes

There are different types of injuries the hip can sustain. The most common are the hip osteoarthritis, iliotibial band syndrome and total hip replacement. In this next section, we will review each condition providing a deeper understanding of each.

Osteoarthritic hip on left, normal hip on right

a. Hip osteoarthritis(OA)

Mechanism of injury/pathophysiology: A degenerative process of varied etiology which includes mechanical changes within the joint. O.A. affects some 40% of those aged over 65 in the community may have symptomatic OA of the knee or hip(Zhang, W. et al 2007).

Risk Factors: Excessive weight born on hip joint, muscle imbalance, repetitive stressors.

Sign and symptoms: Pain in the a.m. described as “achy” that decreases as the day progresses, pain with weight bearing or walking, difficulty squatting, and lateral thigh discomfort. Patients will describe of pain and stiffness in the a.m. described as “achy.” During the day, movement and activity, improves mobility and activity(Fernandes, L et al 2010). However, the volume of activity if too much, will increase pain. Patients typically have pain with weight bearing or prolonged walking, difficulty squatting, and lateral thigh discomfort.

Medical treatment: Non steroidal (NSAIDS)(examples are Ibuprofen/Advil).

Iliotibial band syndrome

b. Iliotibial band syndrome(ITB)

Mechanism of injury: Iliotibial band syndrome (ITBS) is a common injury of the lateral(outside) aspect of the knee particularly in runners, cyclists and endurance sports. ITBS is the most common running injury(Ellis, R et al 2007).

Pathophysiology: ITB syndrome is a non-traumatic overuse injury caused by repetitive friction/rubbing of the distal(farthest) portion of the iliotibial band (ITB) over the lateral femoral epicondyle with repeated flexion and extension of the knee.

Contributing/Risk Factors:
• Muscle imbalances/weakness: per the research and my clinical experience, hip flexors and quadriceps are stronger and than the hamstrings.
• Shoe support-important to rotate running shoes every 6 months or 500 miles according to multiple podiatrists I have worked with over the years.
• Increased bouts of running, altered foot mechanics-ie. Orthotics or need for orthotics.
• Lack of stretching, particularly tight ITB, hip flexors and quadriceps. Contributes to increasing compression along the outer hip.

Sign and symptoms: Lateral knee pain over the lateral condyle of the femur described as “dull/achy” that gradually develops & worsens particularly with running. Pain then becomes “sharp” in nature.

c. Total hip replacement

Mechanism of injury: Osteoarthritis is a musculoskeletal condition that develops over time affecting primarily the hip and knee joints. O.A. affects some 40% of those aged over 65 in the community may have symptomatic OA of the knee or hip(Zhang, W. et al 2007).

Pathophysiology: Osteoarthritis (OA) is a relatively common musculoskeletal disorder, with a high prevalence that increases with age. O.A. is a degenerative process of varied etiology, which includes mechanical changes within the joint (Pisters, M., et al 2007). Significant pain, decreased mobility and compromised function, are the primary reasons, a person would typically undergo a total joint arthoplasty(joint replacement). Total joint arthroplasty is a highly efficacious and cost-effective procedure for moderate to severe arthritis in the hip(Santaguida, P. et al 2008).

Common assessments

A simple functional test to assess a client’s movement pattern, is the squat. The squat is a classic fundamental primal movement that someone typically performs almost on a daily basis. With this test, you can observe how the client’s ankle, knee, hip and back moves compared to normal movement patterns.

What am I looking for?
The approach to assessment is all about asking and answering questions about movement:
• How does the client start, finish the movement?
• What strategies do they use? Do they have the appropriate flexibility to perform the movement?
• Is stability a problem? Are there compensations elsewhere in the movement sequence?

How do I interpret the movement?
• It is important to observe the client in both the frontal and sagittal planes
• Observing globally first, then examine how the entire kinematic chain is working as it relates to timing and sequence to achieve the movement

Dynamic Movement Assessments

1. Functional squat
The squat is a classic fundamental primal movement that someone typically performs almost on a daily basis. Whether it is to perform to pick something up or move an item. Therefore, it is important to assess the movement pattern a client uses during this movement.

Squat in frontal view; Squat in side view

What is required in a squat?
• Adequate ankle mobility, knee stability, hip mobility, lumbar spine(lumbo-pelvic junction) stability

In place lunge

Observations:
• Note the overall quality and range of movement in the frontal plane and sagittal plane
• Note the symmetry or lack of symmetry with the movement
• Note the point of transition from descending to ascending
• Note if there is an shaking(juttering), which indicates weakness in the lumbo-pelvic junction affecting the entire kinematic chain

Another simple assessment is an in place lunge, which examines one’s control through the entire kinematic chain. The lunge is another fundamental primal movement. The lunge is a dynamic movement that is typically performed during daily activities (stooping down to pick something up) or as part of an athletic movement. This test examines ankle control, knee control and pelvic movement in the sagittal plane.

Training strategies and programming for hip injuries

With any injury, the most important thing to remember is the type of injury, healing time and prior level of function of the client. Let’s begin with ankle sprains.

SLS stance with TRX

a. Hip Osteoarthritis(O.A.)

ITB stretch

Recommendations for training: Aqua therapy has been shown in the research to significantly reduce pain, improved physical function, strength, and quality of life(Hinman, Rana S., et al 2007), stretching ITB, hip flexors, quadriceps and hamstrings, strengthening weaker hip abductors(glute medius/minimus). Strengthening specifically hip abductors in various studies when compared to general strengthening, resulted in significant reduction in knee pain, objective change in functional outcome tests, physical function and daily activities(Bennell, K.L., et al. 2010 & Hernández-Molina, G et al. 2008). Core strengthening should also be an integral part of the training program.

b. ITB Syndrome

Recommendations for training: Important to keep stretching the ITB after exercise. Client education on the changing of running shoes every 500 miles or 6 months is key. Resistance training should focus on strengthening weaker phasic muscles (glute medius, minimus and maximus), which are required to stabilize and push off during running. Dynamic core strengthening should always play an integral role of training. Use of aqua therapy can be extremely beneficial and relaxing. It is very important to educate the client on the importance of cross training(ie. yoga, pilates, hiking, and swimming to condition the lower extremity muscles.

c. Hip replacement(THR)

Bridging with physioball

Recommendations for training: Prior to commencing training, it is important to clarify with client, that there are no other underlying health issues. Important to follow hip precautions: avoidance of crossing affected leg towards midline(adduction), and squatting past hip flexion 90 degrees. Training should focus on strengthening weak glute medius/minimus, glute maximus and hamstrings. Effective and safe exercises include; in place lunges, diagonal lunges, seated leg extension and seated leg curl machine. Core strengthening should also always begin with static exercises, and then progressed to dynamic accordingly. Safe and effective core strengthening exercises include; standing trunk rotation with tubing or cable, four point planks, and side planks. Safe dynamic core strengthening exercises include bridging with physioball, single leg bridge with physioball, traveling forward lunge with medicine ball trunk rotation, and four-point plank on physioball as examples.

Summary

The hip is a complex unit thitbdat is comprised of a multitude of ligaments, tendons, connective tissue, muscles that synergistically initiate and correct movement, and stabilize when an unstable environment. Understanding the anatomy, biomechanics and weak links of the hip, common injuries and evidenced based training strategies, should provide you with the insight to better understand and work with clients with these kind of injuries more confidently.

Written by Chris Gellert, PT, MMusc & Sportsphysio, MPT, CSCS, AMS.

Chris is the CEO of Pinnacle Training & Consulting Systems (PTCS). A continuing education company, that provides educational material in the forms of home study courses, live seminars, DVDs, webinars, articles and min books teaching in-depth, the foundation science, functional assessments and practical application behind Human Movement, that is evidenced based. Chris is both a dynamic physical therapist with 14 years experience, and a personal trainer with 17 years experience, with advanced training, has created over 10 courses, is an experienced international fitness presenter, writes for various websites and international publications, consults and teaches seminars on human movement.

REFERENCES
Bennell, K.L., et al. 2010, ‘Hip strengthening reduces symptoms but not knee load in people with medial knee osteoarthritis and varus malalignment: a randomized controlled trial,’ Osteoarthritis and Cartilage, vol. 18, issue 5, pp. 621–628.

Ellis, R., et al., 2007, ‘Iliotibial band friction syndrome—A systematic review,’ Manual Therapy, vol. 12, pp. 200–208.

Fernandes, L., et al 2010, ‘Efficacy of patient education and supervised exercise vs. patient education alone in patients with hip osteoarthritis: a single blind randomized clinical trial,’ Osteoarthritis and Cartilage, vol. 18, issue 10, pp. 1237–1243.

Goodman, Catherine., Boissonnault, William., 1998, G. Pathology: Implications for the Physical Therapist, W.B. Saunders Company, Philadelphia, pp. 267-274, 279-292, 318-328, 412- 417, 609-610, 614-615, 617-621, 660-667, 736-745, 748-755.

Hernández-Molina, G et al. 2008 ‘Effect of therapeutic exercise for hip osteoarthritis pain: Results of a meta-analysis,’Arthritis Care & Research, vol. 59, issue 9, pp. 1221-1228.

Hinman, Rana S., et al 2007, ‘ Aquatic Physical Therapy for Hip and Knee Osteoarthritis: Results of a Single-Blind Randomized Controlled Trial,’ Journal of Physical Therapy, vol. 87, no. 1, pp. 32-43.

Pisters, M., et al., 2007, ‘Exercise adherence improving long-term patient outcome in patients with osteoarthritis of the hip and/or knee, Arthritis Care & Research, vol. 62,

Santaguida, P. et al 2008, ‘Patient characteristics affecting the prognosis of total hip and knee joint arthroplasty: a systematic review,’ Canadian Journal of Surgery, vol. 51, issue 6, pp. 428-436.

Zhang, W., et al., ‘OARSI recommendations for the management of hip and knee osteoarthritis, Part I: Critical appraisal of existing treatment guidelines and systematic review of current research evidence,’ Osteoarthritis and Cartilage, vol. 15, issue 9 pp. 981–1000.

pilates woman stability ball gym fitness yoga

Pilates Exercises for Healing: Shoulder Stretches and Bridging

Naomi Aaronson/16 November 2014/ All MFN blog/

There are three phases of Pilates for breast cancer survivors. The goal of Phase 1, the Protective Phase, is to ensure tissue healing without sacrificing range of motion and flexibility of the chest and arm. In these exercises, only move your arms to shoulder height or 90° and during this phase try to use your affected arm normally to perform daily living tasks such as brushing your teeth, putting on deodorant on, or wiping up your kitchen table.

Below are two examples of Pilates exercises for breast cancer survivors that fall under the Protective Phase. Protective Phase exercises should have three to five repetitions each. This phase will last approximately 2 weeks, or until you feel comfortable progressing to more difficult exercises. The exercises should feel easier and there should be less and less discomfort as you progress.

Exercise 1: Scapula Protraction and Retraction

The scapula is another name for your shoulder blade. The purpose of this exercise (shown in the image below) is to warm up the shoulders in preparation for movement, as well as strengthen the scapular muscles, which are necessary for proper shoulder movement.

Contraindications: None

Equipment: Pad, small pillow, towel, or block under head if needed. Optional medium-sized ball (squeezing the ball between your knees will help to activate the pelvic floor and transverse abdominis muscles and prevent your knees from collapsing in).

Start:

Lie on your back with both knees bent and feet on the ground, hip distance apart.
Pelvis is level with the floor or slightly tilted toward your nose if you have back problems.
Arms and fingertips are reaching toward the ceiling only to shoulder height.
Optional: Squeeze ball between your knees.

Exercise:

Inhale, and reach fingers tips toward the ceiling (shoulder blades will lift off the mat). This is protraction.
Exhale, and bring your shoulder blades together (not too hard) as you imagine you are gently cracking a walnut between your shoulder blades. This is retraction.

Modification for an Added Challenge: Stretch a resistance band between your hands. If you are undergoing a breast implant expander program, TRAM, or DIEP flap reconstruction, do not use a resistance band until medically cleared.

Exercise 2: Bridging

The goal of bridging is to warm up the spine as well as your hamstrings and gluteal muscles. This exercise will help make it easier to put on your underwear and pants and reposition yourself in bed.

Contraindications: Check with your physician to make sure that this exercise is safe for you to do when recovering with drains in place.

Start:

Lie on your back with both knees bent and feet on the ground, hip distance apart.
Pelvis is level with the floor or slightly tilted toward your nose if you have back problems.
Arms are long at your sides.
Optional: Squeeze ball between your knees.

Exercise:

Inhale to start, and then exhale as you tilt your pelvis toward your nose to imprint your spine.
Then push off through your heels, and lift your spine off the mat one vertebrae at a time. You will start moving the lower back, middle back, and then upper back off the mat.
Inhale as you hold this position at the point where you can remain still, without any movement of your pelvis. Both the upper part of your shoulder blades should remain on the mat.
Exhale as you return to the start position by gradually bringing the upper back, middle back, and lower back gently down to the mat, vertebrae by vertebrae to your neutral or imprinted pelvis. Think of rolling the spine slowly down to the floor.

NOTE: Be sure to… Keep both shoulder blades on the mat. Do not let the pelvis rock forward/back or side to side.

Modification for an Added Challenge: Hold a Magic Circle between your inner thighs for resistance as you lift your hips. Hold a Magic Circle between your palms with hands facing each other and fingertips toward the ceiling. Squeeze it when the hips are lifted.

Written by Naomi Aaronson and Ann Marie Turo. Reprinted with permission from Naomi Aaronson, MA, OTR/L, CHT; Also published on demosHEALTH; Images via demosHealth article.

Naomi Aaronson, MA, OTR/L, CHT can be reached at www.recovercisesforwellness.com.

Aerobic Pilates personal trainer instructor women

Pilates for Breast Cancer Survivors: Research and Findings

Naomi Aaronson/11 November 2014/ All MFN blog/

Pilates was first developed by Joseph Pilates to strengthen muscles, increase flexibility, and improve overall health. In the 1950s, Pilates started using his method to rehabilitate dancers, including one of his first protégés, Eve Gentry. She was rehabilitated by Joseph Pilates after a radical mastectomy for breast cancer. After studying Pilates, she was able to regain full use of her arm and torso, a remarkable feat because all of her lymph nodes and chest muscles, as well as breast tissue, were removed with this procedure. Doctors could not believe the success that she had obtained with the Joseph Pilates method; he was a man ahead of the times.

Recent research and studies have helped supported Pilates’ work and demonstrate its benefits for recovering from breast cancer surgery.

Recent Research and Findings

Aerobics Pilates personal trainer helping women group The first study on the benefits of Pilates for breast cancer survivors was completed by physical therapists in 2008 [1]. It was a pilot study with only four participants, so the conclusions we can draw from this study are limited. However, they found that Pilates increased the flexibility of the affected arm after a twelve-week program, with participants exercising three times a week.

Another study done in 2010 [2] examined the effects of Pilates exercises on functional capacity, flexibility, fatigue, depression, and quality of life in female breast cancer patients. Pilates was performed three times a week for eight weeks. After participation in the Pilates exercises, improvements were noted in the participants’ levels of fatigue, flexibility, quality of life, and performance on a six minute walk test. This study helped demonstrate that Pilates was safe and effective for breast cancer survivors.

The most recent study published in 2012 [3] found that after twelve weeks of Pilates, thirteen participants improved their shoulder and neck flexibility. Improvements were noted in quality of life, body image, and mood. Although volume increased on the affected arm (a sign of lymphedema), one must note that this program did not modify the exercises for the class and that the sessions increased in frequency over the twelve-week period.

It is important to note that traditional Pilates mat exercises were used for the studies listed above, and minimal modifications were used which may have affected the results. However, all of these documented results help confirm that Pilates is a gentle but effective way to regain strength and recover from breast cancer.

Footnotes:
Keays, K, Harris, S, et al. “Effects of Pilates Exercises on Shoulder Range of Motion, Pain, Mood and Upper Extremity Function in Women Living with Breast Cancer: A Pilot Study.” Physical Therapy 88(4) (2008): 494–510.

Eyigor, S, Karapolat, H, et al. “Effects of Pilates Exercises on Functional Capacity, Flexibility, Fatigue, Depression and Quality of Life in Female Breast Cancer Patients: A Randomized Study.” European Journal of Physical Medicine 46(4) (2010): 481–87.

Stan, DL, Rausch, SM, et al. “Pilates for Breast Cancer Survivors: Impact on Physical Parameters and Quality of Life After Mastectomy.” Clinical Journal of Oncology Nursing 16(2) (2012): 131–41.

Written by Naomi Aaronson and Ann Marie Turo. Reprinted with permission from Naomi Aaronson, MA, OTR/L, CHT; Also published on demosHEALTH.

Naomi Aaronson, MA, OTR/L, CHT can be reached at www.recovercisesforwellness.com.

Aerobics pilates women feet with yoga balls

The 9 Principles of Pilates

Naomi Aaronson/6 November 2014/ All MFN blog/

For breast cancer survivors using Pilates, it is extremely important to pay attention to the Pilates principles. Getting physical exercise is essential to recovery, but overdoing it can cause more harm than good. Make sure you review the principles below before beginning Pilates for breast cancer recovery, and ask for help from a certified Pilates instructor if you need it.

The 9 Pilates Principles

These principles guide each Pilates exercise to ensure that they are done correctly and safely. In Pilates, less is more. The emphasis is on a correct starting position with proper execution of the exercises; there is no wasted movement in Pilates. No more than five to eight repetitions are completed (except for the Hundreds), and breathing during each exercise is very important. Concentrate on the correct movement patterns first and then add Pilates breathing.

pilates woman stability ball gym fitness yoga If you’ve never done Pilates before, this may sound like a lot to think about. If possible, we recommend working with someone who is trained in Pilates first to get you on the right track.

Breathing: Breathing oxygenates the blood and connects the mind and body. Breathing during Pilates will enhance your relaxation, improve your focus, and help to activate your muscles. Pilates breathing is called “rib cage breathing” or costal breathing as the rib cage expands as you inhale and knits together as you exhale. Coordinating the breath with the movement is the goal. This may be difficult at first, but please stay with it. If you get confused, don’t hold your breath—keep breathing!
- Inhale through the nose as if to smell the roses. Place your fingers on your rib cage and feel your rib cage expand.
- Exhale through pursed lips as to blow out candles, drawing the belly in towards your spine. This activates the transverse abdominas muscle. The deeper the exhalation, the more this muscle is activated. Activation of this muscle should feel very gentle, as it is more like a subtle tightening of the abdomen. The lower back and pelvis should remain still. Buttocks and thighs should stay relaxed.
Concentration: You must place intentional focus on every movement. You will feel each exercise more if you close your eyes, once you become more familiar with the movements. After breast cancer surgery, you may lose the ability to feel if muscles are working properly. Closing your eyes will help in this process to listen to your body and refocus your mind upon proper body movement.
Control: To be in control means that you maintain the proper form, alignment, and effort during the exercise. You don’t want to throw your body around. If there is jerkiness, shaking, tightness and/or pain you are not in control. You can limit the movement and make it smaller if necessary to regain control.
Centering: In Pilates, all movements come from the “powerhouse,” or core abdominal muscles. Learning to use the powerhouse correctly will improve your posture, stabilize the spine, and improve your quality of movement. Thus, every exercise is an abdominal exercise. Visualizing a corset around the waist will help you to activate these muscles.
Precision: Every exercise should be performed with precision and an emphasis upon proper form. Therefore, proper starting position and posture is crucial as well as performing the exercises slowly without momentum.
Balanced Muscle Development: Everything that is done on one side of the body must also be done on the other side. For example, if you do an exercise with your right arm, you must also do it with your left.
Rhythm/Flow: All movements in Pilates are done with a sense of rhythm. The movements should be graceful and smooth.
Whole Body Movement: The whole body is engaged through breathing, engagement of the core, and use of the arms and legs (even though some exercises will not use the arms at all).
Relaxation: Breathing assists with the relaxation of muscles throughout the body. Unwanted tension should be released prior to beginning the exercises. You may work one body part and relax the others

Written by Naomi Aaronson and Ann Marie Turo. Reprinted with permission from Naomi Aaronson, MA, OTR/L, CHT; Also published on demosHEALTH.

Naomi Aaronson, MA, OTR/L, CHT can be reached at www.recovercisesforwellness.com.

Medical Fitness Network Partners with Sudden Cardiac Arrest Foundation

MFN/6 November 2014/ All MFN blog, Conditions/

Sudden Cardiac Arrest Foundation (SCAF), whose mission is to raise awareness about prevention and treatment of sudden cardiac arrest, including post-resuscitation care has announced its partnership with the Medical Fitness Network (MFN), an online health and fitness referral network.

Doctor Examining Male Patient With Knee Pain

The knee complex: understanding the science behind both movement and dysfunction

Chris Gellert/5 November 2014/ All MFN blog/

Introduction

The foot is where movement begins, requiring mobility to perform simple functional movements. The knee however, requires stability with daily movements, but more importantly, dynamic sport movements such as soccer or football. In this article, we will review the anatomy of the knee, common injuries of the knee, functional assessments and training strategies to work with clients with previous injuries.

Basic anatomy of the knee
Let’s look at the anatomy of the knee.. The joint is vulnerable when it comes to injury, because of the mechanical demands placed upon it and the reliance for soft tissue to support the knee. There are two primary joints within the knee, the tibiofemoral joint and the patellofemoral joint.

Figure 2. Structures within the knee joint

Knee Joints

a. Tibiofemoral joint: Is a hinge joint that permits some rotation between the distal end of the femur and proximal end of tibia. The joint capsule surrounds the femoral condyles and tibial plateaus and provides stability to the knee by the medial collateral ligament(MCL) and the lateral collateral ligament (LCL).

b. Patellofemoral joint: Is formed by the patella(knee bone) that glides in the trochlear groove of the femur. The height of the lateral femoral condyle helps prevent lateral subluxation, while soft tissue surrounds the joint to increase stability. This is seen in figure 3.

Figure 3. Patellofemoral joint

Primary structures within the knee joint: ligaments and mensici
Several ligaments described below provide stability at the knee joint.

a. Collateral ligaments: The two primary supporting ligaments are the medial collateral ligament (MCL), which is along the inside of the knee. The MCL is a thinner and weaker ligament biomechanically, making it more susceptible to injury more often injured per the research. While the lateral collateral ligament(LCL) is along the outside or lateral aspect of the knee providing lateral knee stability.

b. Anterior cruciate ligament(ACL): is the most commonly injured knee ligament and is taut during knee extension. It originates more proximally on the femoral side than the posterolateral (PL) bundle. It inserts anteromedially(front and to inner side) on the tibia. The ACL limits and controls forward translation of tibia on the femur and limits tibial rotation.

c. Menisci: the menisci are fibro cartilaginous discs located on the articular surface of the tibia along the medial and lateral tibial plateaus. The outer portion of the meniscus(lateral meniscus)is oval shaped (O) and thick. Attaching at the anterior and posterior horns via coronary ligaments.

Vascularity: The middle third and inner third of both menisci are relative avascular. The medial meniscus is more C-shaped, and thinner in structure. Both menisci receive nutrition through synovial diffusion and from blood supply to the horns of the menisci.

Function of the menisci: The menisci provide shock absorption, joint lubrication and stabilization.

Common injuries and causes

There are several common injuries that affect the knee. The most common are patella femoral syndrome(PFS), osteoarthritis(O.A.) and anterior cruciate ligament(ACL) injuries.

In this next section, we will review each condition providing a deeper understanding of each.

a. Patellofemoral syndrome
Pathophysiology/sign and symptoms: PFS is a condition where the patella does not translate biomechanically in the trochlear groove between the femoral condyles. Here the patella is positioned in either a tilt, glide or rotation accompanied by diffuse, achiness in the front of the knee.

Contributing Factors(Evidence Based Research): Several studies have shown that decreased flexibility of quadriceps and hip flexors(Lankhorst et al. 2012 & Meira et al. 2011) contribute to PFS. Decreased hip abductor strength has been shown a significant factor seen in multiple studies as contributing to PFS (Khayambashi, H., et al. 2012, Meira et al, (2011), Bolgla et al. (2008),Cichanowski et al. (2007), and Robinson et al. (2007).

Other factors include prolonged wearing of high heels, muscle imbalances(quadriceps>hamstrings).

b. Osteoarthritis(OA) of the knee

Figure 4. Osteoarthritis of knee

Pathophysiology/sign and symptoms: A degenerative process of varied etiology, which includes mechanical changes within the joint as seen in figure 4.

Risk Factors: Excessive weight born on hip joint, muscle imbalance, repetitive stressors.

Sign and symptoms: Pain in the a.m. described as “achy” that decreases as the day progresses, pain with weight bearing or walking, difficulty squatting, and lateral thigh discomfort.

c. Anterior cruciate ligament injuries
In the last several years, there has been more news about the incidence of ACL injuries. The incidence rate is greatest between the ages of 16 and 18 years. Female athletes are 3-9x more likely to sustain an ACL injury then male athletes. This results in at least 200,000 ACL reconstructions are performed each year in the United States, with estimated direct costs of $3 billion (in U.S. dollars) annually (Frobell, R., et al 2010).

Figure 5. Mechanism of injury for ACL tear

Pathophysiology/Mechanism of Injury: The knee is struck while in hyperextension, forcing tibia anterior(forward)on the femur, as seen in figure 5. The ACL can also be injured with same mechanism of injury with combined with medial rotation of the lower extremity(LE). This creates instability and a direct disconnect the nervous system to the musculoskeletal system because of the “lack of control” within the knee joint.

Common assessments
One great test to assess a client’s movement pattern, is the squat. The squat is a classic fundamental primal movement that someone typically performs almost on a daily basis. With this test, you can observe how the client’s ankle, knee, hip and back moves compared to normal movement patterns. This is seen in the figure below.

Figure 6. Squat in frontal and side view

Figure 7. In place lunge

This test examines ankle control, knee control and pelvic movement in the sagittal plane. Lastly, a diagonal traveling forward lunge looks at the ability of the client to control ankle, knee, hip, and pelvic movement in both the sagittal and frontal planes. This is not only a functional movement, but very effective for sport specific clients.

Training strategies and programming for knee injuries

Figure 8. Traveling forward lunge

With any injury, the most important thing to remember is the type of injury, healing time and prior level of function of the client.

a. Patellofemoral syndrome
Recommendations for training: Continued stretching of tight hip flexors, ITB, and hamstrings is fundamental. Client should be taught initially static core strengthening exercises, and then progressed to dynamic core strengthening as appropriate. Client would also benefit from education on shoes with respect to type that are most effective for them, and to cross train utilizing, such as hiking, yoga, pilates, and swimming. Lastly, to alter running surfaces(if client runs) and educating the client about changing their shoes every 500 miles or 6 months for maximum stability and control.

b. Osteoarthritis of knee (O.A.)
Recommendations for training: Aqua therapy has been shown in the research to significantly reduce pain, improved physical function, strength, and quality of life (Hinman, Rana S., et al 2007), stretching ITB, hip flexors, quadriceps and hamstrings, strengthening weaker hip abductors(glute medias/minimus). Strengthening specifically hip abductors in various studies when compared to general strengthening resulted in s significant reduction in knee pain, objective change in functional outcome tests, physical function and daily activities (Bennell,K.L., et al. 2010 & Hernández-Molina, G et al. 2008). Core strengthening shoulder also is an integral part of the training program.

Figure 9. Dynamic stabilization Training

c. ACL injury(Anterior cruciate ligament injury)
Recommendations for training: should focus on hamstring strengthening. Strengthening the hamstrings biomechancally transfers the load from the front of the knee to the back, thereby decreasing the stress to the ACL. Neuromuscular training as seen in figure 9, is very effective. It challenges the connection between the nervous and musculoskeletal system requiring the client to stabilize the entire kinematic chain. Research has shown neuromuscular training reduces ACL injuries (HUBSCHER, M. 2010 & Griffin LY, et al., 2006). Core strengthening should be multidirectional in nature as seen in figure 10.

Figure 10. Multidirectional
Training

In the picture on the left, left trunk rotation involves the internal/external obliques, atissimus withdorsi, and right glute medius and minimus muscles to stabilize, as the left glute medius and minimus to stabilize. With the yellow cord applied from the back, this engages the abs primarily to stabilize (from the front) accompanied by the obliques to stabilize, which the low back extensor muscles contract to prevent being pulled backwards. It is important to include dynamic training focusing on hamstrings, glute medius, maximus. Closed chain strengthening (CKC) exercises, such as diagonal forward and diagonal reverse lunges are not only functional, but replicate many common sports as soccer, football and basketball accordingly.

Contrainidications/Precautions: Avoid leg extension exercises completely this causes an anterior translation(shearing) of the tibia on the femur/stressing the graft. Therefore, the exercise is contraindicated. *Biomechanically, shearing stress on the ACL is greatest from 30 degrees of knee flexion to full extension.

Recommendations for training: American Academy of Orthopedic Surgeons (AAOS) Guidelines Post Therapy:
• Continuation of closed kinetic chain exercises(ie. reverse lunges, diagonal lunges,
forward lunge with medicine ball trunk rotation)
• 3 ½ months light jogging begins
• 4 months running begins
• 4 months introduction of plyometrics
• Surgical reconstruction typically sidelines athlete for 6-9 months and once cleared by physician can return to sport activities.

Summary

The knee is a dynamic joint that is comprised of a multitude of ligaments, tendons,
connective tissue, muscles that synergistically initiate and correct movement, and
stabilize when an unstable environment. Understanding the anatomy, biomechanics
and weak links of the knee, common injuries and evidenced based training strategies, should provide you with the insight to better understand and work with clients with these kind of injuries more confidently.

Written by Chris Gellert, PT, MMusc & Sportsphysio, MPT, CSCS, AMS.

Chris is the CEO of Pinnacle Training & Consulting Systems (PTCS). A continuing education company, that provides educational material in the forms of home study courses, live seminars, DVDs, webinars, articles and min books teaching in-depth, the foundation science, functional assessments and practical application behind Human Movement, that is evidenced based. Chris is both a dynamic physical therapist with 14 years experience, and a personal trainer with 17 years experience, with advanced training, has created over 10 courses, is an experienced international fitness presenter, writes for various websites and international publications, consults and teaches seminars on human movement. For more information, please visit www.pinnacle-tcs.com.

REFERENCES
Bennell, K.L., et al., 2010, ‘Hip strengthening reduces symptoms but not knee load in people with medial knee osteoarthritis and varus malalignment: a randomized controlled trial,’ Journal of Osteoarthritis and Cartilage, vol. 18, issue 5, pp. 621-628.

Bolgla, L, et al., 2008, ‘Hip Strength and hip and knee kinematics during stair descent in females with and without patellofemoral pain syndrome,’ JOSPT, vol. 38, pp. 12-18.

Cicanowski, H et al., 2007, ‘Hip strength in collegiate female athletes with patellofemoral pain,’ Medicine Science Sports Exercise, vol. 39, pp. 1227-1232.

Frobell, R., et al 2010, ‘A Randomized Trial of Treatment for Acute Anterior Cruciate Ligament Tears,’ New England Journal of Medicine, vol. 363, issue 4, pp. 331-341.

Griffin LY, et al., 2006, ‘Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley II Meeting, January 2005, American Journal Sports Medicine, vol. 234, pp. 1512-1532.

Hernández-Molina, G., et al., 2008, ‘Effect of therapeutic exercise for hip osteoarthritis pain: Results of a meta-analysis,’ Journal of Arthritis Care & Research, vol. 59, issue 9, pp. 1221–1228.

HU ̈ BSCHER, M., et al., 2010, ‘Neuromuscular Training for Sports Injury Prevention: A Systematic Review,’ American College of Sports Medicine, pp. 413-421.

Khayambashi, H., et al., 2012, ‘The Effects of Isolated Hip Abductor and External Rotator Muscle Strengthening on Pain, Health Status, and Hip Strength in Females With Patellofemoral Pain: A Randomized Controlled Trial, ‘Journal of Orthopedic Physical Therapy, vol. 42, no. 1, pp. 22-29.

Landry SC, et al., 2007, ‘Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver,’ American Journal of Sports Medicine, vol. 3, pp. 1888–1900.

Lankhorst, N, et al, 2012, ‘Risk Factors for Patellofemoral Syndrome: A Systematic Review,’ JOSPT, vol. 42, No. 2, pp. 81-90.

Meira, E., et al., 2011, ‘Influence of the Hip on Patients With Patellofemoral Pain Syndrome,’ Sports Health, vol. 3, issue 5, pp. 455–465.

Prins, 2009,’ Females with patellofemoral pain syndrome have weak hip muscles: a systematic review, Australian Journal of Physiotherapy, vol. 55, issue 1, pp. 9-15.

Robinsion, R et al., 2007, ‘Analysis of hip strength in females seeking physical therapy treatment for unilateral patellofemoral pain syndrome,’ JOSPT, vol. 37, pp. 232-238

Why Some People Eat Lots— But Don’t Get Fat

Nancy Clark, RD/3 November 2014/ All MFN blog/

Some of my clients seem jealous of their teammates. “They eat twice as much as I do and they are skinny as a rail. I just smell cookies and I gain weight,” spouted one collegiate runner. She seemed miffed that she couldn’t eat as much as her peers—and she couldn’t understand why. They all ran the same mileage, did the same workouts, and were similar in body size. Life seemed so unfair!

Yes, life is unfair when it comes to weight management. Some people gain (or lose) body fat more easily than others. Unfortunately, fat gain (or loss) is not as mathematical as we would like it to be. That is, if you persistently overeat (or undereat) by 100 calories a day, in theory you will gain (or lose) 10 pounds of body fat a year. But this theory does not hold up in reality. People vary greatly in their susceptibility to gain or lose body fat in response to over- or under-eating.

muesli with fresh fruits as diet food In general, research has suggested when people overeat, about 85% of the excess calories get stored as fat and the rest gets lost as heat. Overfed fat cells grow in size and in number and provide a storehouse of energy. Obese people commonly have enough fat stores to last a year or more; even lean athletes have enough fat stores to fuel a month or more. Fat can be advantageous during a time of severe illness or a famine.

Burning calories

Lets take a closer look at the four primary ways you burn calories:

Basal metabolic rate (BMR): BMR refers to calories burned when you are at rest and unfed, such as upon waking in the morning. Your heart, lungs, liver, and other organs use a fairly consistent amount of energy each day to keep you alive. Some athletes believe they have a slow metabolic rate that causes them to gain weight easily. Not the case. Very few people have a “slow metabolism.”
Thermic effect of food: This refers to the energy needed to digest, absorb and either convert food into fuel for the muscles and organs or store the excess energy as body fat. The thermic effect of food increases ~14% with overfeeding, due to the added energy needed to process the excess food.
Purposeful exercise: This is what you burn during your workouts. This can vary considerably from day to day.
Non-exercise activity thermogenesis (NEAT): This refers to activities of daily living (brushing teeth, washing dishes, etc.), fidgeting, energy used to maintain posture when standing and sitting, and spontaneous muscle contractions that occur during the day apart from your purposeful exercise. People with high NEAT spontaneously putter around the house, fidget with pencils, use their hands when talking, and are animated and lively. NEAT is genetic and somewhat predictive of who stays lean throughout their lifespan. People with low NEAT are good at sitting quietly. For example, obese people tend to sit 2.5 hours more a day than their peers and this can save them about 350 calories a day. Are they obese because they sit more? (Or do they sit more because they are obese?) Is NEAT the problem?

What happens with overeating?

To better understand why some people lose or gain weight more easily than others, Dr. James Levine PhD of the Mayo Clinic designed a study to look at the biological mechanisms that hinder fat-gain. Dr. Levine studied 16 non-obese subjects (12 males and 4 females), ranging in age from 25 to 36 years. They volunteered to eat 1,000 excess calories a day (above what they needed to maintain weight) for 8 weeks. The subjects were healthy, did not do purposeful exercise more than twice a week, and maintained a stable weight. Prior to being overfed, the researchers monitored the subjects for two weeks to learn how much food they regularly consumed to maintain their weight.

During the study, the subjects lived at their homes but ate supervised meals at the research center. The food had been carefully prepared and measured in a metabolic kitchen. The weight-gain diet was high in protein (20% of total calories) and fat (40% of calories), and low in carbohydrate (40%). The researchers accounted for almost all of the excess 1,000-calories a day. On average, ~430 of the 1,000 calories were stored and ~530 were dissipated via increased energy expenditure. The researches even measured 3 days of poop before and at the end of the study to be sure the subjects did not excrete calories during overfeeding. Only 38 calories a day got flushed down the toilet during overfeeding — 13 calories more than during normal eating.

healthy diet Depositphotos_6270042_xs Here is the fate of the 1,000 excess calories the subjects ate:

Energy stored as fat ranged from 60-685 calories per day
Energy stored as muscle ranged from 15-80 calories per day
Additional calories burned by organs: about 80, on average
Additional calories used to digest the extra food: about 135, on average
Additional calories burned via NEAT ranged from none to 690.

The researchers used highly accurate methods to measure changes in body fat (DXA). Some of the subjects gained 10 times more fat than others, ranging from 0.8 to 9 lbs (0.36 – 4.23 kg). The overall weight gain ranged from 3 to 12 lbs (1.4 -5.5 kg), some of which was additional muscle. NEAT explained the big variation in weight gain that occurred with the subjects in this overfeeding study. The subjects who were good fidgeters and putterers gained less.

The average increase in NEAT was 336 calories a day, but this actually ranged from burning 98 calories less than baseline to burning 690 calories more than baseline. The subject who burned the most calories strolled around the research facility (or did equivalent movement) about 15 minutes more per hour than the other subjects.

Conclusion

Despite popular belief, the ease of gaining weight is unlikely due to having a “slow metabolism.” Most often, athletes who are easy gainers are mellow, sit calmly, and don’t fidget. This contrasts to teammates that are bouncing around the locker room. If you are the mellow-type, blame your genetics — not a slow metabolism — for your ease of weight gain. And perhaps you can be grateful you can spend less money on food because you don’t eat as much?

References
Levine J, N Eberhardt, M Jensen. Role of Nonexercise Activity Thermogenesis in Resistance to Fat Gain in Humans. Science 283:212-214, 1999.

Levine J, Vander Weg M, Hill J, Klesges R. Non-exercise activity thermogenesis: the crouching tiger hidden dragon of societal weight gain. Arterioscler Thromb 26(4):729-36, 2006.

Boston-area sports nutritionist Nancy Clark, MS, RD offers one-on-one consults with both casual and competitive athletes. Her private practice is in Newton, MA (617-795-1875). For information about her Sports Nutrition Guidebook (2014) and food guides for runners, cyclists and soccer players, see www.nancyclarkrd.com. For online education, see www.NutritionSportsExerciseCEUs.com