Effectiveness of Femoral Supracondylar Osteotomy For the Treatment of Valgus Knee with Osteoarthritis
1.Department of Orthopaedics,the Affiliated Hospital of Southwest Medical University
2.Department of Oncology,West China Hospital of Sichuan University
Abstract:Objective To evaluate the clinical efficacy of medial close supracondylar osteotomy of the femoral condyle with Tomofix locking compression palte for the treatment of valgus knee osteoarthritis.Methods A retrospective study was performed on 24 patients with valgus knee and osteoarthritis who underwent medial close supracondylar osteotomyof the femoral condyle combined with Tomofixlocking compression paltefixation in the Affiliated Hospital of Southwest Medical University from January 2016 to December 2017.There were 9 males(9 knees)and 15 females(15 knees),aged 30~58 years(mean,43.6 years).The disease duration was 1 to 8 years(mean,5.6 years).According to Kellgren-Lawrenee grading standard,13 knees were classified as stage I,9 knees as stage Ⅱ,and 2 knees as stage Ⅲ.The full-length AP view of the lower extremity and the weight bearing AP and lateral view of the knee were obtained before and after operation,and the lateral distal femoral angle,femoral-tibial angle were evaluated.Clinical outcomes were comprehensively assessed according to the bone healing time,postoperative complications,progress of knee osteoarthritis after operation,theLysholm score,Hospital for Special Surgery(HSS)score,and International Knee Documentation Committee(IKDC)score before and after operation.Results All the wounds healed primarily,and no complication of infection,deep vein thrombosis,nonunion or delayed union was observed.All patients were followed up 9~22 months(mean,14.8 months).At last follow-up,the valgus deformity of knee joint was corrected in all patients after operation.The lateral distal femoral angles was improved from the preoperative(78.36±2.78)° to the final follow up time(84.72±3.64)°(P<0.05).Tibiofemoral angle was improved from the preoperative(170.41±3.86)° to the final follow up time(181.45±2.78)°(P<0.05).Lysholmscore,Hospital of Special Surgery(HSS)score,and International Knee Documentation Committee(IKDC)score were significantly higher than preoperative ones(P<0.05).Conclusion The medial close supracondylar osteotomy combined with Tomofix locking compression palte fixation is a convient method for the treatment of valgus knee osteoarthritis and can effectively correct the valgus deformity.The short-term clinical efficacy is satisfactory,but long-term efficacy remains to be investigated.