Hip Abductor Muscles Strength Test
ICF category	Measurement of impairment of body function: power of isolated muscles and muscle groups
Description	A test to determine the strength of the hip abductor muscles
Measurement method	The hip abductor muscles strength test is performed with the subject in the supine position and the hip in a neutral position of flexion/extension, abduction/adduction, and external/internal rotation. A “make” test using a handheld dynamometer is used by asking the subject to push the most they can against the handheld dynamometer applied on the lateral aspect of the distal thigh, just above the knee. The hip abductor muscles may also be tested in the side lying position with the hip in abduction and slight extension. A “break” test is performed by the tester applying force via the handheld dynamometer applied on the lateral aspect of the distal thigh just above the knee. The direction of force application is toward adduction and slight flexion while the pelvis is stabilized with the other hand.101
Nature of variable	Continuous
Units of measurement	Force in Newtons
Measurement properties	Interrater and intrarater reliability of force measurements obtained from college age women we re excel lent using a handheld dynamometer for the abductor muscles (intrarater ICC, .88–.96; interrater ICC, .90–.95).31 Force measurements of hip abductors in 22 individuals with hip OA demonstrated good intrarater test-retest reliability (ICC of .84).152 The MDC95, determined from a sample of 90 subjects (age range, 22–70 years) without any previous musculoskeletal problems, was 5.4% of body weight for males and 5.3% of body weight for females.213