TY - JOUR
T1 - Hip abductor muscle volume and strength differences between women with chronic hip joint pain and asymptomatic controls
AU - Mastenbrook, Matthew J.
AU - Commean, Paul K.
AU - Hillen, Travis J.
AU - Salsich, Gretchen B.
AU - Meyer, Gretchen A.
AU - Mueller, Michael J.
AU - Clohisy, John C.
AU - Harris-Hayes, Marcie
N1 - Funding Information:
1Program in Physical Therapy, Washington University School of Medicine, St Louis, MO. 2Electronic Radiology Lab, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO. 3Department of Radiology, Washington University School of Medicine, St Louis, MO. 4Program in Physical Therapy, Saint Louis University, St Louis, MO. 5Department of Neurology, Washington University School of Medicine, St Louis, MO. 6Department of Orthopaedic Surgery, Washington University School of Medicine, St Louis, MO. This study was approved by the Human Research Protection Office of Washington University School of Medicine. This work was supported by the following grants: Dr Harris-Hayes was supported by grants K23 HD067343 and K12 HD055931 from the National Center for Medical Rehabilitation Research, National Institute of Child Health and Human Development, and National Institute of Neurological Disorders and Stroke, and grant UL1 RR 024992-01 from the National Center for Research Resources, components of the National Institutes of Health (NIH) and the NIH Roadmap for Medical Research. Additional support was provided by the Program in Physical Therapy at Washington University School of Medicine, Clinical and Translational Science Award grant UL1 TR000448, and by Alvin J. Siteman Cancer Center (a National Cancer Institute–designated Cancer Center) support grant P30 CA091842. The authors certify that they have no affiliations with or financial involvement in any organization or entity with a direct financial interest in the subject matter or materials discussed in the article. Address correspondence to Dr Marcie Harris-Hayes, Program in Physical Therapy and Department of Orthopaedic Surgery, Washington University School of Medicine, 4444 Forest Park, Campus Box 8502, St Louis, MO 63108. E-mail: [email protected] U Copyright ©2017 Journal of Orthopaedic & Sports Physical Therapy®
PY - 2017/12
Y1 - 2017/12
N2 - STUDY DESIGN: Secondary analysis, cross-sectional study. BACKGROUND: Chronic hip joint pain (CHJP) can lead to limitations in activity participation, but the musculoskeletal factors associated with the condition are relatively unknown. Understanding the factors associated with CHJP may help develop rehabilitation strategies to improve quality of life of individuals with long-Term hip pain. OBJECTIVES: To compare measures of hip abductor muscle volume and hip abductor muscle strength between women with CHJP and asymptomatic controls. METHODS: Thirty women, 15 with CHJP and 15 matched asymptomatic controls (age range, 18-40 years), participated in this study. Magnetic resonance imaging was used to determine the volume of the primary hip abductor muscles, consisting of the gluteus medius, gluteus minimus, a small portion of the gluteus maximus, and the tensor fascia latae, within a defined region of interest. Break tests were performed using a handheld dynamometer to assess hip abductor strength. During the strength test, the participant was positioned in sidelying with the involved hip in 15° of abduction. Independent-samples t tests were used to compare muscle volume and strength values between those with CHJP and asymptomatic controls. RESULTS: Compared to asymptomatic controls, women with CHJP demonstrated significantly increased gluteal muscle volume (228 ± 40 cm3 versus 199 ± 29 cm3, P = .032), but decreased hip abductor strength (74.6 ± 16.8 Nm versus 93.6 ± 20.2 Nm, P = .009). There were no significant differences in tensor fascia lata muscle volume between the 2 groups (P = .640). CONCLUSION: Women with CHJP appear to have larger gluteal muscle volume, but decreased hip abductor strength, compared to asymptomatic controls.
AB - STUDY DESIGN: Secondary analysis, cross-sectional study. BACKGROUND: Chronic hip joint pain (CHJP) can lead to limitations in activity participation, but the musculoskeletal factors associated with the condition are relatively unknown. Understanding the factors associated with CHJP may help develop rehabilitation strategies to improve quality of life of individuals with long-Term hip pain. OBJECTIVES: To compare measures of hip abductor muscle volume and hip abductor muscle strength between women with CHJP and asymptomatic controls. METHODS: Thirty women, 15 with CHJP and 15 matched asymptomatic controls (age range, 18-40 years), participated in this study. Magnetic resonance imaging was used to determine the volume of the primary hip abductor muscles, consisting of the gluteus medius, gluteus minimus, a small portion of the gluteus maximus, and the tensor fascia latae, within a defined region of interest. Break tests were performed using a handheld dynamometer to assess hip abductor strength. During the strength test, the participant was positioned in sidelying with the involved hip in 15° of abduction. Independent-samples t tests were used to compare muscle volume and strength values between those with CHJP and asymptomatic controls. RESULTS: Compared to asymptomatic controls, women with CHJP demonstrated significantly increased gluteal muscle volume (228 ± 40 cm3 versus 199 ± 29 cm3, P = .032), but decreased hip abductor strength (74.6 ± 16.8 Nm versus 93.6 ± 20.2 Nm, P = .009). There were no significant differences in tensor fascia lata muscle volume between the 2 groups (P = .640). CONCLUSION: Women with CHJP appear to have larger gluteal muscle volume, but decreased hip abductor strength, compared to asymptomatic controls.
KW - Dynamometry
KW - Femoroacetabular impingement
KW - Gluteals
KW - Magnetic resonance imaging
KW - Movement system
UR - http://www.scopus.com/inward/record.url?scp=85037096808&partnerID=8YFLogxK
U2 - 10.2519/jospt.2017.7380
DO - 10.2519/jospt.2017.7380
M3 - Article
C2 - 28992772
AN - SCOPUS:85037096808
SN - 0190-6011
VL - 47
SP - 923
EP - 930
JO - Journal of Orthopaedic and Sports Physical Therapy
JF - Journal of Orthopaedic and Sports Physical Therapy
IS - 12
ER -