Modified lateral parapatellar approach for total knee arthroplasty of valgus knee
- VernacularTitle:改良髌旁外侧入路用于外翻膝人工全膝关节置换术
- Author:
You WANG
;
Xiaokui HOU
;
Kerong DAI
- Publication Type:Journal Article
- Keywords:
Arthroplasty,replacement,knee;
Knee joint;
Abnormalities
- From:
Chinese Journal of Orthopaedics
1998;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore a new approach giving soft tissue balance in valgus knee during total knee arthroplasty. Methods A modified lateral parapatellar approach with function of spontaneous release of lateral retinaculum was designed and used for valgus knee during total knee arthroplasty, by which knee joint was exposed with incision between the superficial and deep retinaculum layer together with lateral eversion of fat pad. After release of the constrained structures of the knee at lateral side such as lateral retinaculum, iliotibial band,lateral posterior capsule or lateral collateral ligament the prosthesis was implanted; the superficial and deep retinaculum layers were sutured back in proper tension position in order to maintain a normal patella femoral relationship and then the deep layer was closed. Within 2 weeks after operation CPM was instituted and ambulation was allowed with crutches 2 weeks after operation. Results All of 11 cases so treated healed up without skin problem. The valgus deformities were mostly corrected with a rate of 85.3% from average 10.2 degrees valgus preoperatively to average 1.5 degrees varus postoperatively. Two months postoperation the average range of motion reached 105 degrees and the knees were stable in level walking. Nine of 11 cases were able to go up and down stairs. Conclusion Modified lateral parapatellar approach was suitable for total knee arthroplasty with severe valgus deformity. [
