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Table 1 Univariate analyses of factors associated with postoperative complications requiring revision surgery

From: Risk factor analysis for postoperative complications requiring revision surgery after transtrochanteric rotational osteotomy for osteonecrosis of the femoral head

  Complications (n = 11) No complications (n = 109) p value
Sex
 Male 8 83 0.8007
 Female 3 26  
Age (years), mean (range) 41.4 (25–53) 39.6 (15–60) 0.6500
Body mass index (kg/m2) 23.8 (17.6–29.1) 22.9 (15.6–34.8) 0.2767
Surgical side
 Right 6 54 0.7517
 Left 5 55  
Contralateral hip
 ON (+) 9 62 0.1088
 ON (−) 2 47  
Activity level
 High 1 17 0.7274
 Moderate 4 45  
 Low 6 47  
Previous alcohol intake
 Yes 10 68 0.0587
 No 1 41  
Previous alcohol abuse
 Yes 8 20 0.0001*
 No 3 89  
Previous corticosteroid use
 Yes 5 61 0.5043
 No 6 48  
Perioperative corticosteroid use
 Yes 2 36 0.3131
 No 9 73  
Smoking
 Yes 8 70 0.6130
 No 3 39  
Type
 C-1 3 38 0.6130
 C-2 8 71  
Stage
 3A 7 80 0.7192
 3B 4 28  
 4 0 1  
Preoperative JOA score 58.40 (44–73) 57.22 (25–84) 0.5894
Final follow-up JOA score 79.10 (70–86) 85.56 (52–100) 0.0169*
  1. ON osteonecrosis; JOA Japanese Orthopaedic Association
  2. *p < 0.05 considered significant