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Abstract Objective To investigate the surgical technique and clinical effect oftotal knee arthroplasty in treatment oflateknee osteoarthritis combined with valgus knee deformity.Methods A total of 53 patients(26 males，27 females) received total knee arthroplasty for late knees osteoarthritis complicated with valgus deformitybetween February 2012 andFebruary 2014 in xi'an Honghui hospital.We adopted a stable prosthesissurgery through the knee midline incision，lateral patellar approach，a lateral soft tissue releasecorrecting of knee valgus deformity.Then conventional anticoagulation and early functional exercise such as flexion and extensionwere utilized.Preoperative and postoperative X-ray was conducted in patients with measuring femor-tibial angle (FTA) andparallel knee scoring system (KSS) and knee functional score were used to evaluate the clinical effect.Results 53 patients were followed up for 13 to 24 months withthetypeIwoundhealing，no infection and dehiscence.Preoperative FTA was15.3°(10.1°～19.3°) and postoperative FTA was 5.2° (4.3°～8.4°)，knee joint's range of motion increasedfrom 72°(61 °～85°) to 98°(89°～110°).The KSS score increased from an average of 25.3points (13～39 points) preoperatively to 89.1 points (85～97 points).The knee function score increase froman average of 23.0 points (2～38 points) beforeoperation to 89.3 points (84～97 points) after operation.These improvement are all statistically significent.Conclusion Total knee arthroplastyusing the lateral patellar approach，a selective osteotomy and soft tissue release and balance technicis an effective way in treatment oflateknee osteoarthritis combined with valgus knee deformity.
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