Painful locking of the knee due to bucket handle tear of mediopatellar plica  

作　　者：HE Rui YANG Liu GUO Lin 

机构地区：[1]Center for Joint Surgery, South West Hospital, Third Military Medical University, Chongqing 400038, China

出　　处：《Chinese Journal of Traumatology》2011年第2期117-119,共3页中华创伤杂志（英文版）

摘　　要：A case of swelling and anterior painful knee due to tear of mediopateUar plica is reported. The patient also felt clunk of the patellofemoral joint and knee locking. Under arthroscopic examination, a thick and fibrous plica was found medial to patellar, and a bucket tear along the plica from medial patellar retinaculum to infrapatellar fat pad. Polarized microscopic examination showed collagen fiber fragment and loss of light reflecting property. Neuroimmunohistology suggested up-regulation of synovial plica innervation in the area around the crack. This may be related to the pain. The bucket tear of mediopatellar plicacaused pain and lock of knee are more common than previously reported.

关 键 词：Knee injuries ARTHROSCOPY Patellofemoral joint 

分 类 号：Q426[生物学—神经生物学] TD528.1[生物学—生理学]