Muscle contracture is the result of prolonged immobility and improper positioning leading to joint stiffness and decreased range of movement especially in patients with stroke , parkinsons disease or those who are bedridden 当肢体长期固定不动或经常维持在同一姿势过久例如：中风柏金逊症或需要长期卧床的长，筋肌便会很容易出现萎缩，令关节僵硬和活动幅度减少。
In more severe cases , even increased spasticity , contracture , joint stiffness and deformity could result . it will highly hinder the limb mobility , and also increase the patient s chance of having chest infection and pressure sores . on the other hand , physiotherapy could improve patients limb function and self care ability through appropriate rehabilitation exercises and education about proper usage of assistive devices 安排中风患者接受物理治疗的目的，是保持肢体的活动能力及预防并发症，否则，患肢不单会因缺乏活动而变得肌肉无力，严重者更会引致肌肉痉挛增加，甚至会有挛缩及关节僵硬和变形的情况，这样既会大大减低患者的活动能力，还会增加其患上肺炎和肢体产生褥疮的机会。
Otherwise , weakness would develop in the affected limbs . in more severe cases , even increased spasticity , contracture , joint stiffness and deformity could result . it will highly hinder the limb mobility , and also increase the patient s chance of having chest infection and pressure sores 安排中风患者接受物理治疗的目的，是保持肢体的活动能力及预防并发症，否则，患肢不单会因缺乏活动而变得肌肉无力，严重者更会引致肌肉痉挛增加，甚至会有挛缩及关节僵硬和变形的情况，这样既会大大减低患者的活动能力，还会增加其患上肺炎和肢体产生褥疮的机会。
