TY - JOUR
T1 - Persons with chronic hip joint pain exhibit reduced hip muscle strength
AU - Harris-Hayes, Marcie
AU - Mueller, Michael J.
AU - Sahrmann, Shirley A.
AU - Bloom, Nancy J.
AU - Steger-May, Karen
AU - Clohisy, John C.
AU - Salsich, Gretchen B.
N1 - Publisher Copyright:
Copyright ©2014 Journal of Orthopaedic & Sports Physical Therapy®.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - •STUDY DESIGN: Controlled laboratory cross-sectional study. •OBJECTIVES: To assess strength differences of the hip rotator and abductor muscle groups in young adults with chronic hip joint pain (CHJP) and asymptomatic controls. A secondary objective was to determine if strength in the uninvolved hip of those with unilateral CHJP differs from that in asymptomatic controls. •BACKGROUND: Little is known about the relationship between hip muscle strength and CHJP in young adults. •METHODS: Thirty-five participants with CHJP and 35 matched controls (18 to 40 years of age) participated. Using handheld dynamometry, strength of the hip external rotators and internal rotators was assessed with the hip flexed to 90° and 0°. To assess external rotator and internal rotator strength, the hip was placed at the end range of external rotation and internal rotation, respectively. Strength of the hip abductors was assessed in sidelying, with the hip in 15° of abduction. Break tests were performed to determine maximum muscle force, and the average torque was calculated using the corresponding moment arm. Independent-sample t tests were used to compare strength values between (1) the involved limb in participants with CHJP and the corresponding limb in the matched controls, and (2) the uninvolved limb in participants with unilateral CHJP and the corresponding limb in the matched controls. •RESULTS: Compared to controls, participants with CHJP demonstrated weakness of 16% to 28% (P<.01) in all muscle groups tested in the involved hip. The uninvolved hip of 22 subjects with unilateral CHJP demonstrated weakness of 18% and 16% (P<.05) in the external rotators (0° ) and abductors, respectively, when compared to the corresponding limb of the matched controls. •CONCLUSION: The results of the present study demonstrate that persons with CHJP have weakness in the hip rotator and hip abductor muscles. Weakness also was found in the uninvolved hip of persons with CHJP.
AB - •STUDY DESIGN: Controlled laboratory cross-sectional study. •OBJECTIVES: To assess strength differences of the hip rotator and abductor muscle groups in young adults with chronic hip joint pain (CHJP) and asymptomatic controls. A secondary objective was to determine if strength in the uninvolved hip of those with unilateral CHJP differs from that in asymptomatic controls. •BACKGROUND: Little is known about the relationship between hip muscle strength and CHJP in young adults. •METHODS: Thirty-five participants with CHJP and 35 matched controls (18 to 40 years of age) participated. Using handheld dynamometry, strength of the hip external rotators and internal rotators was assessed with the hip flexed to 90° and 0°. To assess external rotator and internal rotator strength, the hip was placed at the end range of external rotation and internal rotation, respectively. Strength of the hip abductors was assessed in sidelying, with the hip in 15° of abduction. Break tests were performed to determine maximum muscle force, and the average torque was calculated using the corresponding moment arm. Independent-sample t tests were used to compare strength values between (1) the involved limb in participants with CHJP and the corresponding limb in the matched controls, and (2) the uninvolved limb in participants with unilateral CHJP and the corresponding limb in the matched controls. •RESULTS: Compared to controls, participants with CHJP demonstrated weakness of 16% to 28% (P<.01) in all muscle groups tested in the involved hip. The uninvolved hip of 22 subjects with unilateral CHJP demonstrated weakness of 18% and 16% (P<.05) in the external rotators (0° ) and abductors, respectively, when compared to the corresponding limb of the matched controls. •CONCLUSION: The results of the present study demonstrate that persons with CHJP have weakness in the hip rotator and hip abductor muscles. Weakness also was found in the uninvolved hip of persons with CHJP.
KW - Abductor
KW - Dynamometry
KW - External rotator
KW - Femoroacetabular impingement
KW - Internal rotator
UR - http://www.scopus.com/inward/record.url?scp=84911490430&partnerID=8YFLogxK
U2 - 10.2519/jospt.2014.5268
DO - 10.2519/jospt.2014.5268
M3 - Article
C2 - 25299750
AN - SCOPUS:84911490430
VL - 44
SP - 890
EP - 898
JO - Journal of Orthopaedic and Sports Physical Therapy
JF - Journal of Orthopaedic and Sports Physical Therapy
SN - 0190-6011
IS - 11
ER -