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Ipsilateral hip abductor weakness after inversion ankle sprain.

Karen Friel1, Nancy McLean, Christine Myers

  • 1Department of Physical Therapy, New York Institute of Technology, Old Westbury, NY 11568-8000, USA. kfriel@nyit.edu

Journal of Athletic Training
|April 19, 2006
PubMed
Summary

Individuals with chronic ankle sprains often exhibit weaker hip abductor strength and reduced ankle plantar flexion. Rehabilitation programs should incorporate hip abduction exercises to improve outcomes for ankle sprain patients.

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Area of Science:

  • Biomechanics
  • Sports Medicine
  • Rehabilitation Science

Background:

  • Hip stability and strength are crucial for effective gait mechanics and foot positioning during the heel strike phase.
  • Chronic ankle sprains can potentially impact proximal joint function, including the hip.

Purpose of the Study:

  • To investigate the relationship between hip muscle strength and the presence of chronic ankle sprains.
  • To examine the association between hip muscle strength and ankle range of motion in individuals with chronic ankle sprains.

Main Methods:

  • An ex post facto research design was employed, utilizing the uninvolved limb as a control.
  • Handheld dynamometry assessed hip abductor and extensor muscle strength, while goniometry measured ankle range of motion in 23 participants with unilateral chronic ankle sprains.

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Main Results:

  • Significantly reduced hip abductor muscle strength and plantar flexion range of motion were observed on the involved side compared to the uninvolved side (P < .001).
  • A significant positive correlation was found between the strength of the involved hip abductor and extensor muscles (r = 0.539, P < .01).
  • No significant difference in hip extensor muscle strength was detected between the involved and uninvolved limbs (P = .19).

Conclusions:

  • Unilateral chronic ankle sprains are associated with diminished hip abduction strength and decreased ankle plantar-flexion range of motion.
  • Clinicians should consider targeted hip abduction strengthening exercises as part of comprehensive rehabilitation strategies for individuals with ankle sprains.