单髁置换术胫骨假体后倾角的影响  

Impact of posterior tibial slope of tibial component on outcomes of fixed bearing unicompartmental knee arthroplasty

作　　者：刘牧子 沈鑫[1] 谢荣辉[1] 汪建样 龚时国[1] LIU Mu-zi;SHEN Xin;XIE Rong-hui;WANG Jian-yang;GONG Shi-guo(Department of Joint Surgery,The First People's Hospital of Jiujiang City,Jiujiang332000,China)

机构地区：[1]九江市第一人民医院关节外科,江西九江332000

出　　处：《中国矫形外科杂志》2024年第11期1033-1037,共5页Orthopedic Journal of China

摘　　要：[目的]探讨胫骨假体不同后倾角对固定平台单髁置换术后疗效的影响。[方法]回顾性分析2019年8月—2022年6月本院关节外科治疗的59例固定平台单髁置换患者的临床资料,依据术后PTS角分为PTS<6°组,和6°≤PTS≤9°组。评价临床及影像结果。[结果]59例患者均顺利完成手术,围手术期未出现严重并发症,随访时间平均(12.6±4.9)个月。与术前相比,术后两组ROM、KSS-临床评分、KSS-功能评分均显著增加(P<0.05),术后6个月,6°~9°组的ROM[(119.3±9.1)°vs(113.4±10.4)°,P<0.001]、KSS-临床评分[(95.3±7.8)vs(91.3±6.2),P=0.035]、KSS-功能评分[(92.6±5.9)vs(88.9±7.6),P=0.041]均显著优于<6°组。影像方面,与术前相比,两组术后1个月mFTA均显著增加(P<0.05),术后mFTA、FC-VA、TC-VA的差异均无统计学意义(P>0.05)。<6°组的PTS显著小于6°~9°组[(5.2±0.3)°vs(7.9±0.4)°,P<0.001]。[结论]固定平台UKA膝关节单髁置换术中6°≤PTS≤9°的PTS有利于改善患者膝关节活动范围和功能。[Objective]To investigate the effect of posterior tibial slope of the tibial component on fixed bearing unicompartmental knee arthroplasty(FB-UKA).[Methods]A retrospective study was performed on 59 patients who received FB-UKA for medial knee osteoarthritis in our hospital from August 2019 to June 2022.Based on the postoperative PTS measured on radiographs,the patients were classified into the<6°group,and the 6°~9°group.The clinical and imaging consequences were evaluated and compared between them.[Results]All the 59 patients had FB-UKA performed successfully with no serious complications occurred during perioperative period,and followed up for(12.6±4.9)months in mean.Compared with those preoperatively,the ROM,KSS clinical score and KSS functional score significantly in⁃creased postoperatively in both groups(P<0.05).The 6°~9°group proved significantly superior to the>6°group in terms of ROM[(119.3±9.1)°vs(113.4±10.4)°,P<0.001],KSS clinical score[(95.3±7.8)vs(91.3±6.2),P=0.035],KSS functional score[(92.6±5.9)vs(88.9±7.6),P=0.041]6 months postoperatively.As for imaging,the mFTA significantly increased in both groups 1 month after surgery compared with that preoperatively(P<0.05).There were no significant differences in postoperative mFTA,FC-VA,TC-VA between the two group(P>0.05),whereas the<6°group had significantly less PTS than the 6°~9°group postoperatively[(5.2±0.3)°vs(7.9±0.4)°,P<0.001].[Conclusion]The PTS in 6°to 9°might be benefit to improve the range of motion and knee function in FB-UK.

关 键 词：膝内侧骨性关节炎 固定平台单髁置换术 胫骨后倾角 功能 

分 类 号：R687.4[医药卫生—骨科学]