【】就會造成膝蓋外側韌帶損傷

每個人的膝盖行走都離不開膝蓋的支撐,但是外侧長時間不注意走路的姿勢,就會造成膝蓋外側韌帶損傷 ,韧带出現的损伤症狀有腫痛、骨裂等,症状嚴重的膝盖時候都不能動 ,對生活和工作非常的外侧不便,一定要根據自身的韧带情況去做針對性的治療,在生活中一定要注意腿部的损伤保養,不要給膝蓋帶來更多的症状壓力,下麵給大家具體介紹一下 。膝盖
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膝外側副韌帶損傷(injury of lateral collateral ligament of knee joint)比較少見,外侧多因暴力作用於小腿內側使之內收所造成。韧带伸膝位時,损伤膝關節外側關節囊、症状股二頭肌腱處於緊張狀態,與ACL 、PCL共同起到保護膝LCL的作用 。所以膝LCL不易受到損傷
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發病機理
(一)發病原因
多因暴力作用於小腿內側,使之內收所致。
(二)發病機製
外側副韌帶由於膝伸直時外側關節囊 ,肌肉緊張可保護韌帶故不易受損傷。反之 ,膝屈曲時外側副韌帶弛緩,不易損傷 。外側副韌帶由於受對側肢體保護和髂脛束與股二頭肌在膝關節外側保護可防止關節內收 。因此,外側副韌帶斷裂極為罕見,除非強度暴力加於膝關節內側或小腿強度內翻,方能引起外側副韌帶斷裂 。輕者韌帶勞損,重者韌帶自腓骨莖突部撕脫或發生撕脫性骨折 ,多合並外側關節囊破裂 。腓總神經 ,膕肌肌腱,腓腸肌外側頭 ,髂脛束和股二頭肌可同時損傷 。
膝LCL斷裂多發生在止點處 ,多數伴有腓骨小頭撕脫骨折,臨床主要症狀為膝關節外側局限性疼痛 ,腓骨小頭附近腫脹 ,皮下淤血,局部壓痛,膝關節活動障礙 ,有時合並腓總神經損傷 。
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膝關節內翻應力試驗的結果判定:當伸直位試驗陰性 ,屈曲30°位陽性者,表示膝關節LCL斷裂合並外側關節囊韌帶的後1/3 、弓形韌帶、膕肌腱損傷;當伸直位和屈曲30°位均為陽性者 ,表示膝LCL斷裂同時合並十字韌帶斷裂;當伸直位陽性 ,屈曲30°位陰性者 ,表示單純膝LCL斷裂或鬆弛。
依據有強度膝內翻外傷史,膝外側疼痛、腫脹及壓痛,在腓骨小頭附近最明顯 ,膝關節內翻應力試驗陽性,可確定診斷。X線檢查 ,可除外骨折,並剌斷LCL損傷的程度 。
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