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Cited by 22Hip disorders and treatmentsLower Extremity Biomechanics and PathologiesOrthopaedic implants and arthroplasty

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.

The Influence of Squat Kinematics and Cam Morphology on Acetabular Stress

Bagwell, Jennifer J., Powers, Christopher M.·2017·Arthroscopy
DOI 10.1016/j.arthro.2017.03.018
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Abstract

PURPOSE: To evaluate the effect of varying degrees of simulated cam morphology on acetabular stress magnitude and location using a finite element model with 1 subject that incorporates population-specific hip/pelvis kinematics during a squat task. METHODS: A reference model of the hip joint was created from magnetic resonance images obtained from 1 asymptomatic 28-year-old man without femoroacetabular impingement (FAI) morphology or hip dysplasia (alpha angle 41.9°, lateral center edge angle 34.0°, neck-shaft angle 137°, and no visible articular cartilage lesions or bone marrow edema on magnetic resonance). The femoral head/neck geometry was manipulated to mimic different cam morphology severities as reported in a previous study (minimum, moderate, and large). Peak hip and pelvis squat kinematics from healthy individuals (hip flexion 112.6°, abduction 10.5°, internal rotation 14.8°) and persons with FAI (hip flexion 106.3°, abduction 10.5°, internal rotation 8.9°) were applied to the control and cam models. Relative acetabular joint stress values and location of contact were the variables of interest. RESULTS: Average von Mises stress values for control, minimum, moderate, and large cam models were 9.64, 9.27, 11.36, and 28.43 MPa, respectively. Contact in the control and minimum cam models occurred within the acetabular cup. In the moderate and large cam models, contact shifted anterosuperiorly within the acetabular cup and to anterosuperior acetabular rim, respectively. CONCLUSIONS: Despite simulating lower degrees of hip flexion and internal rotation, increased stress and a shift in contact location were observed in the simulated models of FAI. This finding suggests that decreased hip internal rotation in this population during functional tasks may be the result of bony abutment. CLINICAL RELEVANCE: Clinicians should be cautious about prescribing deep squats for persons with cam morphology. Performing squat exercises with neutral or external hip rotation may limit bony abutment at high hip flexion angles.

Overview

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Crossref · 10.1016/j.arthro.2017.03.018

Cites

43 of 43 references verified0 citation errors · 0 not checkable

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  • Persons with FAI exhibit impaired mobility at the hip (specifically hip flexion) and deficits in gluteal muscle activation.

    “Persons with FAI exhibit impaired mobility at the hip (specifically hip flexion) and deficits in gluteal muscle activation.51,53”

    From A Biomechanical Review of the Squat Exercise: Implications for Clinical Practice. (2024) · cites this paper as [53]

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Research works printed but not linked: 2

  1. 10.1302/0301-620X.83B2.0830171 · DOI
  2. 10.1302/0301-620X.84B4.0840556 · DOI

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Metadata

Authors
Bagwell, J. J., & Powers, C. M.
Affiliations
  • Creighton University (US)
  • University of Southern California (US)
Corresponding author
Bagwell, Jennifer J.
ORCID
Venue
Arthroscopy
Publisher
Wiley
Published
2017-10
Volume
33
Issue
10
Pages
1797-1803
ISSN
  • 0749-8063 (ISSN-L)
  • 1526-3231
DOI
10.1016/j.arthro.2017.03.018
OpenAlex
W2757473362
Cited by
22
References
43
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 1 · 2019: 3 · 2018: 2
FWCI
1.68
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Arthroscopy The Journal of Arthroscopic and Related Surgery (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Hip disorders and treatments
  • Physical Sciences › Engineering › Biomedical Engineering › Lower Extremity Biomechanics and Pathologies
  • Health Sciences › Medicine › Surgery › Orthopaedic implants and arthroplasty
Keywords
femoroacetabular impingement, cam morphology, squatting, hip kinematics, hip internal rotation, von Mises stress, hip flexion, hip dysplasia
MeSH terms
Acetabulum, Adult, Biomechanical Phenomena, Femur Head, Hip Joint, Humans, Magnetic Resonance Imaging, Male, Motion, Reference Values, Rotation, Range of Motion, Articular, Femoracetabular Impingement

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