短语词组短语elthviatic knee -cap 弹性护膝elastic knee -cap detail 弹性护膝knee -cap p 护膝chondropathy of knee -cap 髌骨骨软骨病rubbing test of knee -cap 髌骨摩擦试验acute dislocation of knee -cap 急性髌骨脱位 返回 knee-cap