title: [Clinical effect of total knee arthroplasty on patients with knee osteoarthritis combined with mild to moderate valgus knee deformity].
abstract: OBJECTIVE
  To investigate the clinical effect of total knee arthroplasty on patients with knee osteoarthritis combined with mild to moderate valgus knee deformity.
  
  
  METHODS
  A total of 15 patients received total knee arthroplasty for correcting mild (10°-15°) to moderate (15°-30°) valgus knee between January 2011 and February 2014 in Xiangya Hospital of Central South University. We adopted a stable prosthesis surgery through patellar medial approach, osteophytes cleaning, conventional osteotomy, a selective soft tissue release and balance technical correcting of knee valgus deformity. Then conventional anticoagulation and symptomatic rehabilitation was utilized. Preoperative and postoperative X-ray was conducted in patients with measuring femor-tibial angle (FTA) and inspecting the prosthesis position. FTA, visual analog scale (VAS) standard, and parallel knee scoring system (KSS) were used to evaluate the clinical effect.
  
  
  RESULTS
  Fifteen patients were followed up for 14 to 36 (22.40±11.88) months. The hospitalization time was 7-13 (7.73±1.58) d; operative time was 58-110 (81.8±16.85) min, the dominant blood loss was 140-600 (337.30±143.65) mL. Two cases had knee extension hysteresis, and the knee activity recovered after exercise. Leg power lines were normal. Three postoperative cases suffered anterior knee pain. They were subjected to celecoxib analgesic treatment and the pain gradually eased after 3 months. One postoperative case showed incision discharge and swelling, which was healed after change of dressing. During follow-up, review of X-ray film does not show prosthesis loose, subsidence and other complications. The knee valgus angle (8.1±1.8)°, knee motion range (107.33±9.61)°, KSS knee score (74.7±14.5, 75.3±2.7) and pain score (2.5±0.9) were significantly better than the preoperative (P<0.05). The clinical and function KSS scores showed that the improvement rate was 80%.
  
  
  CONCLUSIONS
  Total knee arthroplasty is an effective way to treat patients with knee osteoarthritis combined with mild to moderate valgus knee deformity. The correction of deformity and improvement of joint function can be achieved significantly. The clinical result is satisfactory and patients' quality of life is improved.
authors.affiliation: Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Chen
authors.affiliation: Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Min
authors.initials: M
authors.lastname: Zeng
authors.affiliation: Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Xie
authors.affiliation: Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Long
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Weiping
authors.initials: W
authors.lastname: Su
authors.affiliation: Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Yihe
authors.initials: Y
authors.lastname: Hu
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods; D016063:Blood Loss, Surgical; D006801:Humans; D007719:Knee Joint / Q000002:abnormalities*; D007720:Knee Prosthesis; D061646:Operative Time; D020370:Osteoarthritis, Knee / Q000601:surgery*; D054850:Osteophyte / Q000601:surgery; D010027:Osteotomy; D010149:Postoperative Pain / Q000628:therapy; D010329:Patella / Q000601:surgery; D011788:Quality of Life; D013977:Tibia; D016896:Treatment Outcome