Rifton Prone Stander | 合法醫療器材資訊網

Becausetheirhipsandkneesarebentwhiletheysit,theydeveloptighthipflexormusclesandtighthamstringmuscles.Whenyouneveropenupthesejointsin ...

Prolonged immobility in a sitting or lying position can result in contractures, skeletal deformity, skin ulcers, and digestion, respiration, or circulatory system deficits for special needs children. However, independent standing requires the ability to extend the hips and knees, and bear weight to hold the body upright against gravity.

The different types of joints in the body require different amounts of muscle control. The knee, a hinge joint, moves in essentially two directions: flexion (bend) and extension (straighten.) The hamstring muscles behind the thigh bend the knee, and the quadriceps muscles in front of the thigh straighten the knee. With the foot fixed in place, any movement at the knee is controlled by simultaneous contraction of both these muscle groups as well as others to stabilize the knee. The same is true at the hip, which is a ball and socket joint that can move in many directions....