本病的病因目前尚未十分明了，一般认为，膝关节慢性积累性损伤，机械性牵拉和刺激是主要原因。
The cause of this disease is not clear now. Generally speaking, chronic accumulated injuries, mechanical traction and stimulation are believed to be the major causes.
本病的病因目前尚未十分明了，一般认为，膝关节慢性积累性损伤，机械性牵拉和刺激是主要原因。
The cause of this disease is not clear now. Generally speaking, chronic accumulated injuries, mechanical traction and stimulation are believed to be the major causes.
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