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Table 5 Hip measurements

From: Femoroacetabular Impingement Randomised controlled Trial (FIRST) - a multi-centre randomized controlled trial comparing arthroscopic lavage and arthroscopic osteochondroplasty on patient important outcomes and quality of life in the treatment of young adult (18–50 years) femoroacetabular impingement: a statistical analysis plan

  Treatment X Treatment Y
n = n = n = n = n = n =
Pre-op Post-op 12 Months Pre-op Post-op 12 Months
Anterior hip impingement test, n (%)       
 Positive       
 Negative       
Posterior hip impingement test, n (%)       
 Positive       
 Negative       
Log roll test, n (%)       
 Positive       
 Negative       
Crossover sign, n (%)       
 Positive       
 Negative       
Coxa profunda, n (%)       
 Positive       
 Negative       
Coxa protrusio, n (%)       
 Positive       
 Negative       
Centre-edge angle, mean (SD)       
Alpha angle, mean (SD)       
Neck shaft angle, mean (SD)       
Femoral offset ratio, mean (SD)       
Study hip range of motion, mean (SD)       
 Flexion       
 Extension       
 Abduction       
 Adduction       
 Internal rotation (neutral)       
 External rotation (neutral)       
 Internal rotation (90° flexion)       
 External rotation (90° flexion)       
Non-study hip range of motion, mean (SD)       
 Flexion       
 Extension       
 Abduction       
 Adduction       
 Internal rotation (neutral)       
 External rotation (neutral)       
 Internal rotation (90° flexion)       
 External rotation (90° flexion)       
  1. Pre-op preoperative