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Table 1 Passive hip ROM in patients with FAI and healthy subjects using goniometer and ETS

From: Validity and test-retest reliability of manual goniometers for measuring passive hip range of motion in femoroacetabular impingement patients.

  Goniometer ETS
  FAI Healthy FAI Healthy
Flexion (°) 103.8 ± 15.7 112.1 ± 11.3 84.5 ± 14.7 93.5 ± 7.8
Abduction (°) 30.4 ± 7.3 39.3 ± 7.4a 28.5 ± 6.7 37.3 ± 8.0a
Adduction (°) 23.2 ± 4.0 26.8 ± 5.7 21.5 ± 4.1 21.9 ± 3.0
Internal rotation (°) 26.0 ± 11.3 34.3 ± 10.1 24.2 ± 9.5 29.1 ± 8.5
External rotation (°) 36.3 ± 9.8 44.7 ± 4.8 29.6 ± 8.0 35.2 ± 4.2
  1. Mean values ± SD. ROM: range of motion, FAI: femoroacetabular impingement, ETS: electromagnetic tracking system. a FAI lower than healthy, P < 0.01.