Clinical Outcome of IM-Guided Total Knee Arthroplasty with Inappropriate Femoral Resection in Coronal Plane
- Author:
Young Wan MOON
1
;
Jeong Hoon HAN
;
Keun Ho LEE
;
Sung Won JANG
;
Jai Gon SEO
Author Information
1. Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. ywmoon@skku.edu
- Publication Type:Original Article
- Keywords:
Total knee arthroplasty;
Intramedullary guide;
Mechanical axis deviation;
Alpha angle
- MeSH:
Adenine Nucleotides;
Arthroplasty;
Axis, Cervical Vertebra;
Follow-Up Studies;
Humans;
Knee;
Mycophenolic Acid
- From:The Journal of Korean Knee Society
2013;25(1):19-24
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: 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. MATERIALS AND METHODS: 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< or =alpha angle<98; group 2, 94>alpha, 98< or =alpha). Mechanical axis deviation (MAD), patellar tilting angle (PTA), Knee Society Knee Score (KSKS), and Knee Society Function Score (KSFS) were measured in both groups. RESULTS: 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, 1.59degrees; group 2, 1.91degrees). The number of outliers with > or =2degrees MAD was 65 in group 1 and 24 in group 2. The mean PTA, KSKS, and KSFS were 10.17degrees, 96.0, and 96.6, respectively, in group 1 and 11.58degrees, 84.5, and 85.5, respectively, in group 2. CONCLUSIONS: 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).
