Happy physiotherapist supporting patient with stiffener on the leg
Can physical therapies help relieve muscle contractures in individuals who have endured prolonged bed rest, inactivity, or lack of use of certain muscle groups?
Table of Contents
A muscle contracture, or contracture deformity, is caused when a muscle loses elasticity. This causes permanent shortening and tightening of muscle fibers, which reduces flexibility and makes movement difficult. Muscles that cannot move and stretch cause the surrounding joints to lose mobility and develop pain symptoms. When trying to stretch the contracted muscle, the individual will feel the muscle become very rigid, which can increase pain. (Lieber, R. L., and Fridén, J. 2019) Delaying treatment can potentially cause irreversible and chronic symptoms.
Flexor muscles bend the joints and are those most affected by contractures. The stiffening and tightening prevent the body parts from moving out and away. The most common include:
The permanent shortening of muscle fibers and changes in muscle structure cause muscle contractures or stiffer-than-normal tissue that is difficult to stretch. Sarcomeres are structural units of muscles that cause fibers to contract.
Muscle contractures also form from decreased satellite cells. Satellite cells are specialized stem cells that can rebuild muscle and are necessary for muscle regeneration and repair. Without the proper amount of satellite cells, other cells like fibroblasts significantly increase in the muscle tissue, causing the fibers to become stiff and fibrotic or more fibrous. These changes to the sarcomeres, collagen within the extracellular matrix, and decreased satellite cells all result from conditions in which neurological input to the brain and spinal cord muscles becomes reduced. This is caused by lack of use, injury, or neurological and neuromuscular conditions. (Lieber, R. L., and Fridén, J. 2019)
Contractures often occur from upper motor neuron lesions, which prevent signals from the brain and spinal cord from reaching the motor neurons that control muscle contraction. When these signals are weakened or blocked, muscles become stiff and weak from lack of stimulation. (Lieber, R. L., and Fridén, J. 2019)
Cerebral palsy is a group of disorders affecting mobility caused by an upper motor neuron lesion that is present at birth and is the most common motor disability in children. It causes:
Because cerebral palsy prevents the muscles of the legs from being sufficiently stimulated, contractures commonly develop in the hips, knees, and ankles. Individuals can have a 75% decrease in satellite cells to repair muscle tissue and prevent muscle fibrosis or stiffening. Specific genes linked to collagen production are also altered, causing irregular changes to the extracellular matrix of muscles. (Lieber, R. L., and Fridén, J. 2019)
Muscular dystrophy is a group of inherited neuromuscular disorders characterized by muscle weakness and wasting. Deficient nerve supply to muscles causes them to become stiff and tight, inhibiting the functional range of motion needed to move joints and activate muscles to move. Clinical research suggests that individuals with muscular dystrophy have decreased levels of satellite cells to repair, increasing the risk of developing muscle contracture. (Lieber, R. L., and Fridén, J. 2019)
When muscles are not used for some time because of hospitalization, prolonged bed rest, or immobilization from wearing braces, splints, or casts after injuries, the blood circulation and electrical signaling from nerves to muscles decreases. This results in weakness, increased muscle tightness and stiffness, and muscle wasting/atrophy. Over time, stiff and tight muscles can progress to contractures that become extremely difficult to stretch.
Muscle or tendon injuries can cause contractures as scar tissue develops, joining muscle fibers and joints together. This can significantly restrict movement. Large burns can also cause skin, muscles, and joint contractures. The range of motion can become significantly limited, and the changes can become irreversible if not aggressively treated.
Other forms of upper motor neuron lesions that can cause contractures because of weak or blocked electrical input to muscles as a result of brain or spinal cord damage include:
Symptoms include:
Regular exercise can:
In severe cases where muscle contractures limit the functional range of motion needed for activities of daily living or ADLs, surgical release of the contracted tissue may be recommended. This surgery can improve functional movements like walking, getting in and out of bed, and standing up from chairs. The tight muscles can be surgically cut, and the tendons can be lengthened to allow more mobility. (Lieber, R. L., and Fridén, J. 2019)
The causes of muscle contracture are not always avoidable, but various treatment options are available to help loosen up tight muscles and preserve or restore the range of motion. It’s important to move daily and stretch common areas like the fingers, arms, and legs to reduce the risk of muscle tightness and prevent contractures from developing. It is imperative to seek medical treatment for severe contractures resulting from neuromuscular disorders, including physical and occupational therapy, to prevent contractures from worsening and regaining as much functional range as possible.
Injury Medical Chiropractic and Functional Medicine Clinic uses an integrated approach personalized to the individual that focuses on what works for them and treats injuries and chronic pain syndromes through personalized care plans that improve ability through flexibility, mobility, and agility programs to relieve pain. Our providers use an integrated approach to create personalized care plans for each patient, including Functional Medicine, Acupuncture, Electro-Acupuncture, and Sports Medicine principles. Our goal is to relieve pain naturally by restoring health and function to the body. If other treatment is needed, Dr. Jimenez has teamed up with top surgeons, clinical specialists, medical researchers, and rehabilitation providers to provide the most effective treatments.
Lieber, R. L., & Fridén, J. (2019). Muscle contracture and passive mechanics in cerebral palsy. Journal of applied physiology (Bethesda, Md. : 1985), 126(5), 1492–1501. doi.org/10.1152/japplphysiol.00278.2018
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The information herein on "Treating Muscle Contracture: Restoring Flexibility and Function" is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.
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Our information scope is limited to Chiropractic, musculoskeletal, acupuncture, physical medicines, wellness, contributing etiological viscerosomatic disturbances within clinical presentations, associated somatovisceral reflex clinical dynamics, subluxation complexes, sensitive health issues, and/or functional medicine articles, topics, and discussions.
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Dr. Alex Jimenez DC, MSACP, RN*, CCST, IFMCP*, CIFM*, ATN*
email: coach@elpasofunctionalmedicine.com
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Dr. Alex Jimenez DC, MSACP, RN* CIFM*, IFMCP*, ATN*, CCST
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