TY - JOUR
T1 - Hip kinematics during single-leg tasks in people with and without hip-related groin pain and the association among kinematics, hip muscle strength, and bony morphology
AU - Harris-Hayes, Marcie
AU - Hillen, Travis J.
AU - Commean, Paul K.
AU - Harris, Michael D.
AU - Mueller, Michael J.
AU - Clohisy, John C.
AU - Salsich, Gretchen B.
N1 - Funding Information:
St Louis, MO. The study was approved by the Human Research Protection Office at Washington University School of Medicine. Dr Harris-Hayes was supported b grants K23 HD067343 and K12 HD055931 from the National Center for Medical Rehabilitation Research, National Institute of Child Health and Human Development, and Nationa Institute of Neurological Disorders and Stroke, and by grant UL1 RR 024992-01 from the National Center for Research Resources, components of the National Institutes of Healt (NIH) and the NIH Roadmap for Medical Research. Additional support was provided by the Program in Physical Therapy at Washington University School of Medicine, Clinica and Translational Science Award grant UL1 TR000448, and Alvin J. Siteman Cancer Center (a National Cancer Institute-designated Cancer Center) grant P30 CA091842. Th 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 discusse in the article.
Funding Information:
1Program in Physical Therapy, Washington University School of Medicine, St Louis, MO. 2Department of Orthopaedic Surgery, Washington University School of Medicine, St Louis, MO. 3Department of Radiology, Washington University School of Medicine, St Louis, MO. 4Electronic Radiology Lab, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO. 5Department of Mechanical Engineering and Materials Science, Washington University, St Louis, MO. 6Program in Physical Therapy, Saint Louis University, St Louis, MO. The study was approved by the Human Research Protection Office at Washington University School of Medicine. 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 by 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 Alvin J. Siteman Cancer Center (a National Cancer Institute–designated Cancer Center) 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, Washington University School of Medicine, 4444 Forest Park Boulevard, Campus Box 8502, St Louis, MO 63108. E-mail: harrisma@wustl.edu U Copyright 2020 Journal of Orthopaedic & Sports Physical Therapy®
Publisher Copyright:
© 2020 Journal of Orthopaedic & Sports Physical Therapy®.
PY - 2020/5
Y1 - 2020/5
N2 - OBJECTIVE: To compare 3-D hip kinematics during the single-leg squat and step-down in patients with hip-related groin pain to those in asymptomatic participants, and to assess relationships among hip kinematics, muscle strength, and bony morphology.DESIGN: Controlled laboratory cross-sectional study. METHODS: Forty patients with hip-related groin pain and 40 matched, asymptomatic participants between 18 and 40 years of age participated. A handheld dynamometer was used to assess hip abductor and external rotator strength. An 8-cam-era motion-analysis system was used to quantify 3-D kinematics during the single-leg squat and step-down. Magnetic resonance imaging was used to quantify bony morphology. The independent t test and Mann-Whitney U test were used to assess between-group differences. Pearson coefficient correlations were used to assess relationships. RESULTS: Patients with hip-related groin pain had smaller peak hip flexion angles, smaller knee flexion angles, and lesser squat depth compared to asymptomatic participants during the single-leg squat. Among patients with hip-related groin pain, smaller hip flexion angles during the single-leg squat were associated with hip abductor weakness (r = 0.47, P≤.01). Among asymptomatic participants, smaller peak hip flexion angles during the single-leg squat were associated with less acetabular coverage (r = 0.33, P =.04) and shallow squat depth (r = 0.48, P≤.01); a smaller hip internal rotation angle during the step-down was associated with larger femoral neck shaft angle (r = -0.43, P<.01). CONCLUSION: Compared to asymptomatic participants, patients with hip-related groin pain had smaller hip and knee flexion angles and shallower squat depth during the single-leg squat. Smaller hip flexion angles were associated with hip abductor weakness among those with hip-related groin pain.
AB - OBJECTIVE: To compare 3-D hip kinematics during the single-leg squat and step-down in patients with hip-related groin pain to those in asymptomatic participants, and to assess relationships among hip kinematics, muscle strength, and bony morphology.DESIGN: Controlled laboratory cross-sectional study. METHODS: Forty patients with hip-related groin pain and 40 matched, asymptomatic participants between 18 and 40 years of age participated. A handheld dynamometer was used to assess hip abductor and external rotator strength. An 8-cam-era motion-analysis system was used to quantify 3-D kinematics during the single-leg squat and step-down. Magnetic resonance imaging was used to quantify bony morphology. The independent t test and Mann-Whitney U test were used to assess between-group differences. Pearson coefficient correlations were used to assess relationships. RESULTS: Patients with hip-related groin pain had smaller peak hip flexion angles, smaller knee flexion angles, and lesser squat depth compared to asymptomatic participants during the single-leg squat. Among patients with hip-related groin pain, smaller hip flexion angles during the single-leg squat were associated with hip abductor weakness (r = 0.47, P≤.01). Among asymptomatic participants, smaller peak hip flexion angles during the single-leg squat were associated with less acetabular coverage (r = 0.33, P =.04) and shallow squat depth (r = 0.48, P≤.01); a smaller hip internal rotation angle during the step-down was associated with larger femoral neck shaft angle (r = -0.43, P<.01). CONCLUSION: Compared to asymptomatic participants, patients with hip-related groin pain had smaller hip and knee flexion angles and shallower squat depth during the single-leg squat. Smaller hip flexion angles were associated with hip abductor weakness among those with hip-related groin pain.
KW - Dysplasia
KW - Femoroacetabular impingement
KW - Movement
UR - http://www.scopus.com/inward/record.url?scp=85084172028&partnerID=8YFLogxK
U2 - 10.2519/jospt.2020.9150
DO - 10.2519/jospt.2020.9150
M3 - Article
C2 - 31905098
AN - SCOPUS:85084172028
SN - 0190-6011
VL - 50
SP - 243
EP - 251
JO - Journal of Orthopaedic and Sports Physical Therapy
JF - Journal of Orthopaedic and Sports Physical Therapy
IS - 5
ER -