膝关节创伤后造成软组织损伤的征像难以确定时，放射检查关节的渗出就尤为重要。本文研究了在急诊室就诊的１００例急性膝关节损伤的病人，关节有渗出征像但没有骨折改变，并对其进行了分析评价同时进行追踪随访，结果是２０％的患者需进一步检查，１１％的患者软组织严重损伤需要外科治疗。提示软组织的潜在损伤行膝关节的放射检查是有效的价值指标。 Knee injury caused by soft tissue injury signs difficult to determine, the radiological examination of joint exudation is particularly important. In this paper, we studied 100 cases of acute knee joint injury in the emergency department. The patients had exudation of the joint but no fracture changes. The patients were analyzed and evaluated and followed up. The result was that 20% of the patients needed further examination, Severe soft tissue injuries require surgical treatment in 11% of patients. Prompted the potential damage to soft tissue Radiological examination of the knee joint is a valid value indicator.