Ankle Orthopaedic Test: Peroneus longus and brevis tests

orthopaedic tests May 24, 2023

Peroneus longus and brevis are two muscles located in the lower leg that help to stabilize and move the ankle joint. There are a few tests that can be done to evaluate the strength and function of these muscles. Here are the steps for each test:

Position the patient lying on their side with the affected leg on top.

  • Hold the patient's foot and ankle in a neutral position (not inverted or everted).
  • Ask the patient to actively evert their foot against resistance.
  • Resist the movement by applying pressure against the lateral aspect of the foot.
  • Observe the strength and quality of the movement.

In both tests, it is important to observe for any pain, weakness, or abnormal movement patterns. These tests can help to diagnose conditions such as ankle sprains, peroneal tendonitis, or ankle instability.



  1. Magee, D. J. (2014). Orthopedic Physical Assessment-E-Book. Elsevier Health Sciences.
  2. Konor, M. M., Morton, S., & Eckhoff, D. G. (2012). Effect of ankle position on the strength of the peroneus longus and brevis muscles. Journal of sport rehabilitation, 21(1), 26-31.
  3. Florence, J. M., Pandya, S., King, W. M., Robison, J. D., Baty, J., Miller, J. P., ... & Weber, D. R. (2012). Clinical trials in Duchenne dystrophy. Natural history dystrophin studies: Considerations in design and implementation. Contemporary clinical trials, 33(5), 730-742.
  4. Houston, M. N., Van Lunen, B. L., Hoch, J. M., & Hoch, M. C. (2014). Examining the sensitivity and specificity of two ankle stability tests. Journal of sport rehabilitation, 23(1), 1-7.

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