膝后外侧角

Posterolateral corner of knee

定义

Antoine Micheau

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膝关节右室后支角(PLC)是一个复杂的解剖区域,由多种韧带和肌腱结构组成,为膝关节提供稳定性。PLC的主要稳定结构包括外侧副韧带(LCL)腘肌腱腘腓韧带(PFL)

PLC内的其他结构包括弓状韧带腓肠豆腓韧带腘斜韧带后半月板股骨韧带腘肌肌腱单元也是重要组成部分,其附着于外侧半月板和腘腓韧带(PFL)。

外侧副韧带起自股骨外侧上髁,止于腓骨头,提供内翻稳定性。腘肌腱起自股骨外侧髁,止于胫骨后面,在内旋和后方稳定性中发挥作用。腘腓韧带从腘肌腱延伸至腓骨头,有助于抵抗外旋和后方移位的稳定性。

深入理解这些结构的详细解剖关系对于诊断和处理PLC损伤至关重要。PLC损伤通常与交叉韧带损伤相关,若处理不当,可导致严重的膝关节不稳定。

參考資料

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