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Performance Function Tests in Assessing Ankle Fitness.

Justin Greisberg1, Peter Gould1, James Turner Vosseller1

  • 1Department of Orthopedic Sugery, Columbia University, New York, NY.

Journal of the American Academy of Orthopaedic Surgeons. Global Research & Reviews
|February 22, 2019
PubMed
Summary
This summary is machine-generated.

Determining athlete readiness post-injury is challenging. While a universal minimum threshold for performance function tests (PFTs) wasn't found, a 10% difference between legs indicates normal function, and the side hop test may predict overall ankle readiness.

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Area of Science:

  • Sports Medicine
  • Orthopedics
  • Biomechanics

Background:

  • Assessing athlete readiness for return to competition after injury is a clinical challenge.
  • Existing performance function tests (PFTs) lack established norms or minimum performance levels.
  • This study aimed to establish benchmarks for PFTs in healthy athletes.

Purpose of the Study:

  • To determine if a minimum performance level exists for PFTs that all healthy athletes can achieve.
  • To investigate if right and left leg performance on PFTs are consistently within 10% of each other.
  • To assess if performance on one functional test can predict performance on others.

Main Methods:

  • A cohort of healthy athletes underwent a series of functional ankle tests of increasing difficulty.
  • Range of motion was assessed, followed by functional tests.
  • Data for right and left legs were recorded separately for initial tests; means, ranges, and standard deviations were calculated.

Main Results:

  • Eighty-one athletes completed the protocol, revealing significant performance variation between individuals.
  • The high standard deviation across tests precluded establishing a minimum performance threshold.
  • However, intra-athlete comparison showed right and left leg performance consistently within 10% of each other.
  • The side hop test performance was found to be predictive of performance on other functional tests.

Conclusions:

  • Defining a universal minimum threshold for PFTs is not feasible due to wide performance variability.
  • Achieving performance within 10% of the uninjured leg suggests normal function recovery.
  • The side hop test shows potential as a standalone measure for assessing overall ankle readiness.