病因 在zai人ren工gong哺bu乳ru的de情qing況kuang下xia，常chang須xu用yong一yi手shou拉la著zhe羊yang頭tou的de後hou部bu，幫bang助zhu其qi跳tiao出chu羊yang欄lan而er到dao達da哺bu乳ru架jia前qian
，如ru果guo用yong力li不bu當dang或huo過guo於yu猛meng烈lie，容rong易yi引yin起qi羔gao羊yang枕zhen環huan關guan節jie或huo環huan軸zhou關guan節jie發fa生sheng挫cuo傷shang。有you時shi亦yi因yin羔gao羊yang從cong羊yang欄lan高gao處chu跳tiao下xia時shi站zhan立li不bu穩wen，而er歪wai傷shang頭tou頸jing，挫cuo傷shang以yi上shang關guan節jie。羔gao羊yang因yin急ji於yu吃chi乳ru，互hu相xiang爭zheng擠ji，亦yi可ke將jiang後hou腿tui插cha入ru欄內，引起膝關節挫傷。

    症狀 bingyangtoubuhuodongbuling
，jingshenshaocha，dangtoubuhuodongshaoyonglishi
，jihuigaoshengcanjiao，ruoyongshouniezhuqitoudehoubu，zejiaoshenggengda。ruguoxiguanjieshoushang，zexingzoushihuanzhibunengzhedierfashengboxing，shoumoshigandaogaiguanjiezhongda

，shaoyonglinie
，yangjihuiduobi
、叫喚。

    防治 weileyufangbenbing，rengongburushiyingqinglaqingfang。danggaoyangyongjishi，buyaoshiqishoujingzhengtao。chufaxianyoucuoshang，jiuyingqingweiyuyiyaodong
，bingzaiguanjiebujiayianmo，yicujinguanjiebufenjiqizhouweidexueyexunhuan。jianqubingguanjiebuweidemao
，tuchazhangnaojiujing。yekeyongzhangnaojiujingjisongjieyoudenglianghunhe

，meitiantuchaliangci，zhizhiquanyu。