title: Effect of osteoarthritis patients' gender on rehabilitation after total knee arthroplasty.
abstract: OBJECTIVE
  To investigate the influence of gender on osteoarthritic knee rehabilitation outcome of osteoarthritis patient undergoing total knee arthroplasty (TKA).
  
  
  METHODS
  We prospectively studied thirty male and thirty female knee primary osteoarthritis patients receiving unilateral TKA with posterior stable-fixed plateau prosthesis at our hospital from March 2003 to March 2008. The age and body mass index of male and female patients were matched. The surgical and rehabilitation clinical factors were compared between two groups.
  
  
  RESULTS
  There was no significant difference in postoperative hospitalization time, surgical tourniquet time, and wound drainage volume between two groups (P>0.05). The extension/flexion degrees of knee joint before operation, 1-week, 2-week and 1-year after operation for male patients were 6.0 +/- 3.3 degrees/114.0 +/- 10.0 degrees, 2.0 +/- 1.6 degrees/93.0 +/- 7.4 degrees, 0.6 +/- 0.6 degrees/104.0 +/- 9.9 degrees and 0.3 +/- 0.5 degrees/125.0 +/- 8.8 degrees, for female patients were 7.0 +/- 3.4 degrees/112.0 +/- 14.0 degrees, 2.0 +/- 1.3 degrees/89.0 +/- 10.9 degrees, 0.9 +/- 0.8 degrees/101.0 +/- 11.8 degrees, 0.4 +/- 0.5 degrees/124.0 +/- 7.1 degrees. The range of motion before operation, 1-week, 2-week, and 1-year after operation for male patients was 108.0 +/- 9.5 degrees, 91.0 +/- 7.1 degrees, 103.0 +/- 9.9 degrees, and 125.0 +/- 8.9 degrees, for female patients was 105.0 +/- 14.1 degrees, 87.0 +/- 11.4 degrees, 100.0 +/- 11.9 degrees, and 124.0 +/- 7.0 degrees. The preoperative and 1-year postoperative HSS scores were 55.8 +/- 13.3 and 89.6 +/- 6.7 for males and 54.5 +/- 13.8 and 89.2 +/- 4.1 for females. No significant statistical difference was observed between two gender groups in regards to degree of extension and flexion, range of motion and HSS score (P>0.05).
  
  
  CONCLUSIONS
  Gender does not influence postoperative knee function of osteoarthritis patients. TKA significantly improves knee joint function and relieve osteoarthritis-related pain.
authors.affiliation: Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China. ybsurg@sina.com
authors.forename: Jin
authors.initials: J
authors.lastname: Lin
authors.forename: Bo
authors.initials: B
authors.lastname: Yang
authors.forename: Xi-sheng
authors.initials: XS
authors.lastname: Weng
authors.forename: Jin
authors.initials: J
authors.lastname: Jin
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhao
authors.forename: Gui-xing
authors.initials: GX
authors.lastname: Qiu
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000534:rehabilitation*; D015992:Body Mass Index; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D020370:Osteoarthritis, Knee / Q000534:rehabilitation / Q000601:surgery; D011184:Postoperative Period; D011446:Prospective Studies; D012737:Sex Factors; D016896:Treatment Outcome