Hip flexor muscle size, strength and recruitment pattern in patients with acetabular labral tears compared to healthy controls

Mendis, M. Dilani, Wilson, Stephen J., Hayes, David A., Watts, Mark C. and Hides, Julie A. (2014) Hip flexor muscle size, strength and recruitment pattern in patients with acetabular labral tears compared to healthy controls. Manual Therapy, 19 5: 405-410. doi:10.1016/j.math.2014.02.006


Author Mendis, M. Dilani
Wilson, Stephen J.
Hayes, David A.
Watts, Mark C.
Hides, Julie A.
Title Hip flexor muscle size, strength and recruitment pattern in patients with acetabular labral tears compared to healthy controls
Journal name Manual Therapy   Check publisher's open access policy
ISSN 1356-689X
1532-2769
Publication date 2014-10
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.math.2014.02.006
Open Access Status
Volume 19
Issue 5
Start page 405
End page 410
Total pages 6
Place of publication London, United Kingdom
Publisher Churchill Livingstone
Collection year 2015
Language eng
Abstract Acetabular labral tears are a source of hip pain and are considered to be a precursor to hip osteoarthritis. Hip flexor muscles contribute to hip joint stability and function but it is unknown if their size and function is altered in the presence of labral pathology. This study aimed to investigate hip flexor muscle size, strength and recruitment pattern in patients with hip labral pathology compared to control subjects. 12 subjects diagnosed with an unilateral acetabular labral tear were compared to 12 control subjects matched for age and gender. All subjects underwent magnetic resonance imaging (MRI) of their lumbo-pelvic region. Average muscle cross-sectional area (CSA) of the iliacus, psoas, iliopsoas, sartorius, tensor fascia latae and rectus femoris muscles were measured. Hip flexion strength was measured by an externally fixed dynamometer. Individual muscle recruitment pattern during a resisted hip flexion exercise task was measured by muscle functional MRI. Hip flexor muscle strength was found to be decreased in patients with labral pathology compared to control subjects (p < 0.01). No difference between groups or sides was found for hip flexor muscle size (all p > 0.17) and recruitment pattern (all p > 0.53). Decreased hip flexor muscle strength may affect physical function in patients with hip labral pathology by contributing to altered gait patterns and functional tasks. Clinical rehabilitation of these patients may need to include strengthening exercises for the hip flexor muscles.
Keyword Hip injuries
Osteoarthritis
Muscle strength
Magnetic resonance imaging
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Information Technology and Electrical Engineering Publications
 
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