Utility of Preoperative Distractive Stress Radiograph for Beginners to Extent of Medial Release in Total Knee Arthroplasty.
10.4055/cios.2009.1.2.110
- Author:
Jae Ang SIM
1
;
Ji Hoon KWAK
;
Sang Hoon YANG
;
Sung Hoon MOON
;
Beom Koo LEE
;
Joon Yub KIM
Author Information
1. Department of Orthopaedic Surgery, Gil Medical Center, Gachon University, Incheon, Korea. bklee@gilhospital.com
- Publication Type:Original Article
- Keywords:
Total knee arthroplasty;
Femoro-tibial angle;
Medial release;
Distractive stress radiograph
- MeSH:
Aged;
*Arthroplasty, Replacement, Knee/methods;
Female;
Humans;
Joint Deformities, Acquired/etiology/radiography;
Knee Joint/*radiography;
Ligaments, Articular/radiography;
Male;
Medial Collateral Ligament, Knee/*surgery;
Middle Aged;
Osteoarthritis, Knee/complications/radiography/*surgery
- From:Clinics in Orthopedic Surgery
2009;1(2):110-113
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: This study evaluated the preoperative distractive stress radiographs in order to quantify and predict the extent of medial release according to the degree of varus deformity in primary total knee arthroplasty. METHODS: We evaluated 120 varus, osteoarthritic knee joints (75 patients). The association of the angle on the distractive stress radiograph with extent of medial release was analyzed. The extent of medial release was classified into the following 4 groups according to the stage: release of the deep medial collateral ligament (group 1), release of the posterior oblique ligament and/or semimembranous tendon (group 2), release of the posterior capsule (group 3) and release of the superficial medial collateral ligament (group 4). RESULTS: The mean femorotibial angle on the preoperative distractive stress radiograph was valgus 2.4degrees (group 1), valgus 0.8degrees (group 2), varus 2.1degrees (group 3) and varus 2.7degrees (group 4). The extent of medial release increased with increasing degree of varus deformity seen on the preoperative distractive stress radiograph. CONCLUSIONS: The preoperative distractive stress radiograph was useful for predicting the extent of medial release when performing primary total knee arthroplaty.
