Effect of Synovectomy on Blood Loss and Knee Function in Total Knee Arthroplasty for Osteoarthritis
HE Yun-li,ZHANG Qian,ZHANG Hang
Bone and Joint division, Beichen Hospital, Tianjin City, Tianjin (300400), China
Abstract:
Objective To discuss the effect of synovectomy on blood loss and knee function in total knee arthroplasty for osteoarthritis. Methods The patients with primary osteoarthritis (180 cases) undergoing total knee arthroplasty were selected and randomly divided into observation group and control group, with 90 cases in each group. The patients in observation group underwent synovectomy during total knee arthroplasty but the synovial membrane was preserved in control group. The blood loss, operation time, pain before and after operation, clinical and functional scores of knee joint were observed in both groups. Results In observation group, operative apparent blood loss was (750.9+253.7) mL, occult bleeding volume was (722.8 ±213.3) mL, the theoretical total blood loss was (1557.2 +346.8) mL and operation time was (111.3+23.93) min, which were significantly higher than those of the control group in terms of dominant blood loss (543.2 +223.6 ) mL, recessive blood loss (536.1+192.41) mL, theoretical total blood loss (1086.7+242.9) mL and operation time (90.6+20.2) min (P<0.05). VAS scores at 3 d, 12 weeks and 1 year after operation in both groups were significantly lower than those before operation. The difference was statistically significant (P<0.05). There was no significant difference between the two groups (P>0.05). There was no significant difference in AKSS clinical score and functional score between the two groups 12 weeks after operation and 1 year after operation (P>0.05). The incidence of adverse reactions and infections was 11.11% in the observation group and 3.33% in the control group (P<0.05). Conclusion The removal of synovium in total knee arthroplasty for osteoarthritis can significantly increase blood loss and infection risk, but it can not significantly improve the function of knee joint.
