Bilateral supracondylar femoral contracture of the knees.Ambulation program could be started with knee in extension after osteotomy while the range of knee motion remained the same.

• 另一例因两膝成弯曲挛缩畸形，施行两侧股骨髁上切骨术，使膝保持伸直，以利走路训练，膝关节活动度虽维持原状，但病人可以复健以拐杖行动。