Validity and test-retest reliability of manual goniometers for measuring passive hip range of motion in femoroacetabular impingement patients.
Abstract Background The aims of this study were to evaluate the construct validity (known group), concurrent validity (criterion based) and test-retest (intra-rater) reliability of manual goniometers to measure passive hip range of motion (ROM) in femoroacetabular impingement patients and healthy controls.Methods Passive hip flexion, abduction, add