Total Knee Arthroplasty Using an Intra-Articular Correction Method in Patients with Extra-Articular Deformity of the Femur.
10.4055/jkoa.2010.45.3.204
- Author:
Dae Kyung BAE
1
;
Sang Jun SONG
;
Kyoung Ho YOON
;
Jung Ho NOH
;
Se Min LEE
Author Information
1. Department of Orthopedic Surgery, School of Medicine, Kyung Hee University, Seoul, Korea. songsjun@khmc.or.kr
- Publication Type:Original Article
- Keywords:
femur;
extra-articular deformity;
total knee arthroplasty
- MeSH:
Arthroplasty;
Axis, Cervical Vertebra;
Congenital Abnormalities;
Extremities;
Femur;
Follow-Up Studies;
Humans;
Knee
- From:The Journal of the Korean Orthopaedic Association
2010;45(3):204-209
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To investigate the result of total knee arthroplasty (TKA) using an intra-articular correction in patients with extra-articular deformity of the femur. MATERIALS AND METHODS: We performed 23 TKAs in 23 patients with extra-articular deformity of the femur. The mean age was 58.0 years and the follow-up period averaged 54.7 months. The American Knee Society's knee and function score were evaluated, and the mechanical axis (MA) was measured. Sixteen knees with a deformity in the distal third of the femur were assigned to group I and 7 knees with a deformity in the proximal or middle third were assigned to group II. Between groups differences in results were analyzed. RESULTS: The average knee score was 47.8 preoperatively and 91.6 at the last follow-up. The average function score was 46.9 preoperatively and 89.1 at the last follow-up. The MA averaged varus was 7.7degrees preoperatively and 1.0degrees postoperatively. The average knee score at the last follow-up was 90.1 in group I and 95.0 in group II. The average function score at the last follow-up was 87.8 in group I and 92.1 in group II. The MA averaged varus was 2.0degrees in group I and 1.3degrees in group II (p=0.042). CONCLUSION: TKA in conjunction with intra-articular correction produced satisfactory results for patients with an extra-articular deformity of femur. The possibility of incomplete correction of limb alignment should be carefully considered, especially in cases with a severe deformity at the distal third of the femur.
