选取126例行全膝关节置换术( TKA)的患者，将隐性失血量高于平均隐性失血量的患者列为高隐组，其余为低隐组。比较两组性别、年龄、体质量指数( BMI)、置换侧别、术后疼痛程度、膝关节肿胀程度及术后各时点的膝关节活动度( ROM)和美国膝关节协会( KSS)功能评分，分析隐性失血与TKA功能恢复的相关性及其危险因素。结果显示两组年龄、膝关节肿胀程度及术后7 d、3个月的ROM和KSS功能评分比较差异有统计学意义(P<0.05)，表明隐性失血对TKA早期膝关节功能恢复影响较大，年龄是隐性失血的危险因素。%126 patients undergoing total knee arthroplasty ( TKA) were recruited in this study. Patients whose hid-den blood loss was higher than the average hidden blood loss were divided into the high hidden blood loss group, and the others were divided into the low hidden blood loss group. To analyze the correlation between hidden blood loss with functional rehabilitation of TKA and its risk factors, by comparing the difference of the two groups, in gen-der, age, body mass index(BMI), lesion knees, degree of knee joint swelling, postoperative knee pain, preopera-tion range of motion( ROM) and Knee Society Score ( KSS) function scores at each point after operation. There was statistically significant difference in age, degree of postoperative knee joint swelling, ROM and KSS function scores at 7 th day and 3 d month after operation between the two groups ( P<0.05 ) . It deminstrates that the hidden blood loss had the influence on the early functional rehabilitation of TKA. Age is a risk factor of TKA.
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