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

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...

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Published inChinese journal of traumatology Vol. 14; no. 2; pp. 117 - 119
Main Authors HE, Rui, YANG, Liu, GUO, Lin
Format Journal Article
LanguageEnglish
Published China Elsevier B.V 01.04.2011
Center for Joint Surgery, South West Hospital, Third Military Medical University, Chongqing 400038, China
Subjects
Adult
Arthroscopy
Humans
Knee injuries
Knee Injuries - physiopathology
Male
Pain - etiology
Patellofemoral joint
Patellofemoral Joint - injuries
关节镜
撕裂
显微镜检查
疼痛
胶原纤维
膝关节
财产损失
锁定
Knee injuries
Arthroscopy
Patellofemoral joint
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Summary: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.
Bibliography:Knee injuries; Arthroscopy; Patellofemoral joint
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.
50-1115/R
ObjectType-Case Study-2
SourceType-Scholarly Journals-1
ObjectType-Feature-4
content type line 23
ObjectType-Report-1
ObjectType-Article-3
ISSN:1008-1275
DOI:10.3760/cma.j.issn.1008-1275.2011.02.012