Clinical effect of total knee arthroplasty for severe knee valgus deformity / 局解手术学杂志

ABSTRACT

Objective To research the clinical effect and operation way of total knee arthroplasty for severe knee valgus deformity. Methods From March 2011 to September 2013, 17 cases (23 knees) with severe knee valgus deformity were selected as the research ob-ject. Metered the tibial angle and checked the activity of knee joint of all the patients before operation. All patients were scored with HSS knee scoring system. Through the selection of lateral parapatellar approach, targeted osteotomy, selective lateral soft tissuelax, patients were given total knee arthroplasty for the treatment of severe knee valgus deformity. The femoral and tibial angle of patients was measured again after the operation. All patients were reexamined after 6 months which included checking the activity of knee joint, evaluating the therapeutic effect of patients with HSS knee scoring system. Results All patients were reexamined in our hospital 6 months after surgery, the degree of femoral and tibial angle decreased from (28. 4 ± 4. 9)° to (5. 2 ± 2. 3)°; knee joint range of motion increased from (65. 4 ± 16. 7)° to (106. 7 ± 27. 3)°;HSS score increased from (38. 46 ± 3. 75) point to (87. 41 ± 4. 77) point. Postoperative indexes were significantly im-proved compared with preoperative indexes, and the differences were of statistical significance (P<0. 05). Conclusion The curative effect is remarkable for patients with severe knee valgus deformity using patellar medial approach, standard osteotomy combined with selective soft tissue release, and total knee arthroplasty. And the knee valgus deformity of patients was corrected and the quality of life has been signifi-cantly improved.