【Abstract】 Objective To study the influence of close-box and open-box knee prosthesis on postoperative blood
loss in patients undergoing total knee replacement(TKR). Methods From June 2005 to December 2006, 108 atients with primaryknee osteoarthritis were treated with TKR. Closed-box knee prosthesis was used in 54 patients (Group A), including unilateral(Group A1, n =27)and bilateral (Group A2, n =27). There were 7 males and 47 females, aged 41-76 years; and the diseasecourse was 4-16 years. Open-box knee prosthesis was used in 54 patients(Group B), including unilateral (Group B1, n =27)andbilateral(Group B2, n =27). There were 8 males and 46 females, aged from 59-81 years; and the disease course was 8-26 years. Thepostoperative blood loss and perioperative blood loss were compared between groups. Results The postoperative blood losswas (890±352), (1 694±528), (1 068±386) and(2 065±622) mL in groups A1, A2, B1 and B2, respectively. There was no significantdifference between groups A1 and B1(P  gt; 0.05). There was significant difference between groups A2 and B2(P  lt; 0.05). The totalblood loss was (1 095±329), (2 082±594), (1 274±415) and (2 459±734) mL in groups A1, A2, B1 and B2, respectively. Therewas no significant difference between groups A1 and B1(P  gt; 0.05). There was significant difference between groups A2 and B2(P  lt; 0.05). Conclusion Closed-box knee prosthesis may play roles on reducing postoperative blood loss. The main influentialfactor for postoperative blood loss is operation techniques which includes reducing operation time and stanching thoroughlyduring operation.

Citation： 姜军,吕厚山,朱靖有. INFLUENCE OF CLOSED-BOX AND OPEN-BOX KNEE PROSTHESIS ON POSTOPERATIVE BLOOD LOSS INPATIENTS UNDERGOING TOTAL KNEE REPLACEMENT/. Chinese Journal of Reparative and Reconstructive Surgery, 2008, 22(1): 9-11. doi: Copy