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Table 1 Preoperative clinical data on patient subgroups

From: Mid- term results of stryker® scorpio plus mobile bearing total knee arthroplasty

  OA·ON group RA group
Patient No. 49 17
TKA No. 59 OA:53, ON:6 17
Sex (Male/ Female) 7/ 42 1/ 16
Age at time of operation (yr) 72.2±6.1 * 62.8±8.1 *
  51- 82 52- 79
Body height (cm) 149.8±6.9 151.7±6.9
Body weight (kg) 55.8±9.8 57.8±10.9
Body-mass index (kg/m2) 24.8±3.6 25.1±4.6
Preoperative Flexion angle (°) 120.3±18.7 109.4±24.2
Preoperative Extension angle (°) −6.6±8.1 −15.3±12.4
Preoperative JOA score 51.6±8.9 44.1±10.9
Preoperative FTA (°) 184.9±7.9 * 177.2±7.2 *
Follow- up duration (yr) 5.8±0.8 6.1±0.9
  1. * = P- values less than 0.01 by Mann- Whitney’s U test.