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Serial Testing of Postural Control After Acute Lateral Ankle Sprain.

Jay Hertel1, W E Buckley, Craig R. Denegar

  • 1Pennsylvania State University, University Park, PA.

Journal of Athletic Training
|August 26, 2003
PubMed
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Postural control is impaired after acute lateral ankle sprain, particularly in the frontal plane. Improvements are noted by week 4, showing recovery of balance function in injured limbs.

Area of Science:

  • Biomechanics
  • Sports Medicine
  • Rehabilitation Science

Background:

  • Acute lateral ankle sprain is a common injury affecting postural control.
  • Understanding the time course of postural recovery is crucial for effective rehabilitation.

Purpose of the Study:

  • To investigate changes in postural control during single-leg stance in the 4 weeks following an acute lateral ankle sprain.
  • To compare postural control between injured and uninjured limbs across different planes of movement.

Main Methods:

  • A within-subjects design was used with 17 young adults who sustained unilateral acute lateral ankle sprains.
  • Measures of center-of-pressure (COP) excursion length, velocity (VEL), and range (RANGE) were recorded during static single-leg stance.
  • Data were collected on day 1, week 2, and week 4 post-injury in both frontal and sagittal planes.

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Main Results:

  • Significant side-by-plane-by-session interactions were found for COP measures.
  • Frontal plane postural control (PSL and VEL) was impaired in injured limbs at day 1 and week 2, but not week 4.
  • Sagittal plane differences persisted across all testing sessions, while frontal plane RANGE improved by week 4.

Conclusions:

  • Postural control deficits are evident in the early stages (day 1 and week 2) after lateral ankle sprain.
  • Significant improvements in postural control occur by week 4, indicating functional recovery.
  • Consistent improvements in postural control were observed in both injured and uninjured limbs over the 4-week period.