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Influence of ROM Exercise on the Joint Components during Immobilization
Taro Matsuzaki1, Shinya Yoshida2, Satoshi Kojima3
1Division of Health Science, Kanazawa University Graduate School of Medical Science, Japan.
Journal of Physical Therapy Science
|January 11, 2014
Summary
Range of motion (ROM) exercise in rats reduced joint capsule changes and localized tissue hyperplasia compared to immobilization alone. ROM exercise may positively influence joint tissue metabolism.
Area of Science:
- Orthopedics
- Histopathology
- Regenerative Medicine
Background:
- Immobilization can lead to joint capsule fibrosis and cartilage adhesion.
- Understanding the impact of therapeutic exercise on joint healing is crucial.
Purpose of the Study:
- To investigate the histopathological effects of range of motion (ROM) exercise on joint components after immobilization.
- To compare the effects of ROM exercise versus immobilization alone on rat knee joints.
Main Methods:
- Twenty-six male Wistar rats were divided into immobilization, exercise, and control groups.
- Knee joints were immobilized at 120° flexion; the exercise group underwent daily ROM for 2 weeks.
- Histopathological analysis of joint capsules and surrounding tissues was performed.
Main Results:
- Immobilization led to joint capsule narrowing and articular cavity infiltration.
- ROM exercise in the exercise group showed localized hyperplasia primarily in the synovial membrane.
- Both immobilized and exercised joints exhibited narrower collagen bundles compared to controls.
Conclusions:
- ROM exercise appears to modulate joint component changes induced by immobilization.
- Exercise may influence tissue metabolism within the joint, potentially mitigating adverse effects of immobility.
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