Forrester D Alex, Law Jesua I, Grant Angie, Hofmann Aaron A
Hofmann Arthritis Institute, Salt Lake City, UT, 84102, USA.
Orthopedic Surgery, Modesto, CA, 95351, USA.
J Orthop. 2024 Jul 15;58:150-153. doi: 10.1016/j.jor.2024.06.042. eCollection 2024 Dec.
Approximately 10 years ago a total knee arthroplasty system with a modern universal femoral component was introduced. It includes a symmetrical femoral and tibial component. The purpose of this study was to evaluate the 6-year clinical outcomes of this implant from a single surgeon.
A retrospective chart review was performed on all patients who received a TJO Klassic® Knee from January 2014 to January 2015 (Total Joint Orthopedics Inc., Salt Lake City, Utah). In total there were 131 patients (149 knees) who underwent total knee arthroplasty with this system. A retrospective chart review was performed including demographics, preoperative and postoperative clinical assessments including Knee Society score (KSS), range of motion, and radiographic assessment.
There were 60 males (45.8 %) and 71 females (54.2 %) with 149 knees available for review. Mean age at time of surgery was 67.4 years (45-91) and BMI was 32.6 kg/m (16.6-54.6). The patella was left unresurfaced in 37 knees (24.8 %), KSS scores including the clinical and functional components all improved significantly (p < 0.001). ROM improved significantly (p < 0.001). 9 knees underwent reoperation within 6 years of their index operation: 2 quadriceps tendon repairs, 3 polyethylene exchanges for laxity, 2 two-stage revisions for infection, 1 revision for aseptic loosening of the femur, and 1 for post-traumatic patella fracture.
6-year outcomes of a modern universal femoral design demonstrate excellent clinical results and survivorship equal to modern asymmetrical femur designs. There were no known instances of patellar maltracking.
大约10年前，一种带有现代通用股骨部件的全膝关节置换系统被引入。它包括一个对称的股骨和胫骨部件。本研究的目的是评估来自单一外科医生的这种植入物的6年临床结果。
对2014年1月至2015年1月期间接受TJO Klassic®膝关节置换术的所有患者（全关节骨科公司，犹他州盐湖城）进行回顾性病历审查。共有131例患者（149个膝关节）接受了该系统的全膝关节置换术。进行了回顾性病历审查，包括人口统计学、术前和术后临床评估，包括膝关节协会评分（KSS）、活动范围和影像学评估。
有60名男性（45.8%）和71名女性（54.2%），共149个膝关节可供审查。手术时的平均年龄为67.4岁（45 - 91岁），体重指数为32.6 kg/m²（16.6 - 54.6）。37个膝关节（24.8%）未进行髌骨表面置换，KSS评分包括临床和功能部分均有显著改善（p < 0.001）。活动范围显著改善（p < 0.001）。9个膝关节在初次手术的6年内进行了再次手术：2例股四头肌肌腱修复，3例因松弛进行聚乙烯垫片更换，2例因感染进行二期翻修，1例因股骨无菌性松动进行翻修，1例因创伤后髌骨骨折进行翻修。
现代通用股骨设计的6年结果显示出优异的临床效果和生存率，与现代不对称股骨设计相当。没有已知的髌骨轨迹不良的情况。
