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目的:探讨胫骨平台后方骨挫伤的危险因素。方法:回顾性分析2017年10月至2019年11月因膝关节外伤而就诊的155例患者资料，男100例，女55例，年龄（40.0±10.6）岁（范围18~60岁）。观察患者胫骨平台后方是否存在骨挫伤，并通过影像学资料收集患者是否同时存在前十字韧带（anterior cruciate liagment，ACL）、后十字韧带（posterior cruciate ligament, PCL）、内侧副韧带（medial collateral ligament, MCL）、外侧副韧带（lateral collateral ligament, LCL）及腓骨小头损伤，通过病历资料收集患者受伤机制、年龄、性别及受伤侧别及体格检查等资料，分析各事件对胫骨平台后方骨挫伤发生的相关危险因素。结果:155例患者中有92例发生骨挫伤，男56例，女36例；年龄（39.6±10.5）岁（范围19~55岁）；右侧膝关节损伤45例，左侧47例。ACL损伤情况：ACL完全断裂42例，部分断裂34例，无损伤16例；PCL损伤18例，无损伤74例；非接触性损伤57例，接触性损伤35例；腓骨小头损伤57例，无损伤35例；MCL损伤44例，MCL无损伤48例；LCL损伤13例，LCL无损伤79例。单因素分析结果显示ACL损伤（n χ2=18.345）、腓骨小头损伤（n χ2=5.495）与胫骨平台后方骨挫伤存在明显差异（均n P0.05）。对组间存在差异的变量进行Logistic分析，结果显示ACL损伤、腓骨小头损伤均是胫骨后方骨挫伤形成的独立危险因素（均n P0.05), injury mechanism (n χ2=3.467, n P>0.05), age (n t=0.664, P>0.05), LCL (n χ2=0.010, n P>0.05)、MCL (n χ2=0.029, n P>0.05) and PCL (n χ2=0.161, n P>0.05). ACL injury was an independent risk factor for bone contusion in the posterior of tibial plateau (n P<0.05) and the injury of fibula head was an independent risk factor for the formation of bone contusion in the posterior of tibial plateau (n P<0.05) according to logistic analysis. The possibility of bone contusion on the posterior tibial plateau in ACL complete injury was significantly greater than that of ACL partial injury (n OR=2.695, n P=0.021).n Conclusion:The injury of ACL and fibula head are independent risk factors for the bone contusion in posterior of tibial plateau; ACL complete injury is more likely to be associated with posterior tibial plateau bone contusion than ACL partial injury.