Moon Young-Wan, Han Jeong-Hoon, Lee Keun-Ho, Jang Sung Won, Seo Jai-Gon
Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Knee Surg Relat Res. 2013 Mar;25(1):19-24. doi: 10.5792/ksrr.2013.25.1.19. Epub 2013 Feb 27.
The purpose of this study was to evaluate clinical results and accuracy of femoral cutting in the coronal plane in total knee arthroplasty (TKA) using a fixed length intramedullary guide.
From 2005 to 2008, 101 patients (154 knees) underwent TKA (NexGen LPS implant). The minimal follow-up period was 3 years (mean, 4.4 years). The patients were divided into two groups (group 1, 94≤α angle<98; group 2, 94>α, 98≤α). Mechanical axis deviation (MAD), patellar tilting angle (PTA), Knee Society Knee Score (KSKS), and Knee Society Function Score (KSFS) were measured in both groups.
There were 120 knees in group 1 and 34 knees in group 2. There was no significant intergroup difference in the postoperative MAD (group 1, 1.59°; group 2, 1.91°). The number of outliers with ≥2° MAD was 65 in group 1 and 24 in group 2. The mean PTA, KSKS, and KSFS were 10.17°, 96.0, and 96.6, respectively, in group 1 and 11.58°, 84.5, and 85.5, respectively, in group 2.
The percentage of coronal alignment outliers was relatively high (34 in 154 cases, 22%) after TKA using a fixed length intramedullary guide. However, there was no statistically significant intergroup difference in clinical results (KSKS, p=0.67; KSFS, p=0.56).
本研究旨在评估使用定长髓内导向器进行全膝关节置换术（TKA）时股骨在冠状面截骨的临床效果及准确性。
2005年至2008年，101例患者（154膝）接受了TKA（NexGen LPS植入物）。最短随访期为3年（平均4.4年）。患者被分为两组（第1组，94°≤α角＜98°；第2组，α角＜94°或α角≥98°）。测量两组的机械轴偏移（MAD）、髌骨倾斜角（PTA）、膝关节协会膝关节评分（KSKS）和膝关节协会功能评分（KSFS）。
第1组有120膝，第2组有34膝。术后MAD组间无显著差异（第1组，1.59°；第2组，1.91°）。MAD≥2°的异常值数量在第1组为65个，在第2组为24个。第1组的平均PTA、KSKS和KSFS分别为10.17°、96.0和96.6，第2组分别为11.58°、84.5和85.5。
使用定长髓内导向器进行TKA后，冠状面力线异常的比例相对较高（154例中有34例，22%）。然而，临床结果（KSKS，p = 0.67；KSFS，p = 0.56）组间无统计学显著差异。
