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

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

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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, adduction, internal and external rotation ROMs were simultaneously measured with a conventional goniometer and an electromagnetic tracking system Horse Feed (ETS) on two different testing sessions.A total of 15 patients and 15 sex- and age-matched healthy controls participated in the study.

Results The goniometer provided greater hip ROM values compared to the ETS (range 2.0-18.9 degrees; P P Conclusions The present study suggests that goniometer-based assessments considerably overestimate hip joint ROM by measuring intersegmental angles (e.

g., thigh flexion on trunk for hip flexion) rather than true hip AEG KDK911424M-Antifingerprint Stainless steel/Black Push to open Warming Drawer ROM.It is likely that uncontrolled pelvic rotation and tilt due to difficulties in placing the goniometer properly and in performing the anatomically correct ROM contribute to the overrating of the arc of these motions.

Nevertheless, conventional manual goniometers can be used with confidence for longitudinal assessments in the clinic.