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Table 1 Preoperative characteristics of 21 subjects randomized to a postoperative exercise intervention or usual care following primary total hip arthroplasty

From: A randomized pilot study of a comprehensive postoperative exercise program compared with usual care following primary total hip arthroplasty in subjects less than 65 years of age: feasibility, selection of outcome measures and timing of assessment

  Intervention Control P-value
(n = 11) (n = 10)
Demographics    
Mean age (SD) 51.7 (8.3) 55.9 (9.9) 0.30
Number of females n (%) 7 (64) 3 (30) 0.20
Working full time n (%) 7 (64) 8 (80) 0.11
Performance-based measures    
Strength in pounds of force    
 Mean hip flexion (SD) 25.3 (8.5) 28.6 (7.0) 0.37
 Mean hip extension (SD) 21.3 (7.2) 28.1 (13.7) 0.21
 Mean hip external rotation (SD) 13.8 (5.0) 16.8 (5.5) 0.22
 Mean hip internal rotation (SD) 13.1 (3.4) 16.3 (5.7) 0.16
 Mean abduction (SD) 22.1 (8.3) 24.5 (6.7) 0.50
 Mean six minute walk test in meters (SD) 402.2 (291.4) 472.2 (373.0)** 0.65
Self- report measures    
WOMAC*    
 Mean pain score (SD) 46.0 (12.4) 55.6 (13.2) 0.13
 Mean function score (SD) 51.0 (14.8) 55.1 (14.0) 0.56
RAND-36*    
 Mean physical function score (SD) 27.8 (13.9) 40.0 (23.3)** 0.20
 Mean physical role score (SD) 13.9 (25.3) 43.8 (37.2)** 0.07
 Mean bodily pain score (SD) 26.5 (14.4) 34.9 (12.9) 0.22
 Mean general health appendix score (SD) 78.3 (16.5) 79.0 (19.9) 0.94
 Mean vitality score (SD) 48.5 (17.0) 53.8 (23.3) 0.59
 Mean emotional role score (SD) 63.3 (42.9) 87.5 (24.8)** 0.09
 Mean social function score (SD) 53.8 (32.3) 75.0 (14.9)** 0.16
 Mean mental health score (SD) 76.4 (15.8) 83.0 (11.7) 0.34
  1. Legend: SD = Standard Deviation; WOMAC = Western Ontario McMaster Osteoarthritis Index; RAND-36 = RAND 36-Item Health Survey.
  2. *Scores are rated as 0 = no health limitation – 100 = maximal health limitation.
  3. **Exceeds clinically important difference.