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Table 2 Self-report outcome measures

From: Effects of preoperative neuromuscular electrical stimulation on quadriceps strength and functional recovery in total knee arthroplasty. A pilot study

  Time
  Baseline Preoperative + 6 Weeks + 12 Weeks
WOMAC Pain     
   NMES 11.7 ± 2.7 11.4 ± 3.3 7.9 ± 5.9 5.4 ± 4.0 a
   Control 10.0 ± 5.7 11.8 ± 4.0 5.4 ± 3.0 5.2 ± 4.3
WOMAC Function     
   NMES 36.9 ± 11.3 34.7 ± 11.0 29.8 ± 16.9 19.9 ± 13.9
   Control 37.0 ± 15.7 38.4 +/- 14.4 24.2 ± 9.9 21.6 ± 11.3
WOMAC Stiffness     
   NMES 5.0 ± 2.9 5.1 ± 1.8 4.6 ± 2.4 3.2 ± 2.0
   Control 4.8 ± 1.6 5.4 ± 1.3 4.6 ± 1.1 3.0 ± 1.4
SF-36 Physical Health     
   NMES 41.0 ± 22.1 44.4 ± 18.7 35.7 ± 17.0 57.1 ± 18.0 b
   Control 39.0 ± 20.8 45.6 ± 17.8 39.0 ± 9.4 57.0 ± 25.2
SF-36 Mental Health     
   NMES 63.7 ± 18.3 62.3 ± 17.5 58.6 ± 26.0 77.7 ± 14.7 b a
   Control 56.4 ± 22.6 68.6 ± 23.1 58.8 ± 19.5 71.0 ± 26.4
  1. Values are means ± SD;
  2. WOMAC - Western Ontario McMaster Osteoarthritis Index; SF-36-Short Form 36
  3. ap < 0.05 vs. Preoperative; bp < 0.05 vs. + 6 Weeks