LCL撕裂最常见的症状是疼痛, 刚度, 膝盖外侧有肿胀和压痛. 你的膝盖也会感到松弛,好像在压力下会崩溃. More severe tears can cause numbness or weakness in the foot; this occurs if the peroneal nerve (located near the LCL) is stretched at the time of injury or squeezed by subsequent swelling of the surrounding tissues.