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Peroneus Longus and Brevis Tests

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Purpose

The purpose of these tests is to locate the peronei muscles.

Technique

Fibularis Brevis:
Patient Position:
Semi-lateral position on the contralateral side with the ankle in neutral position.

Instructions for therapist and patient:
Immobilise the distal calf with one hand proximal to the ankle, while pressing the lateral margin of the foot into eversion with the other hand. [1][2]

Instruct the patient to evert the foot and thus the talocalcaneoavicular joint in a neutral position. Make sure that the long extensors are relaxed and the toes are held in slight flexion. [1][2]

Fibularis longus:

Patient position:
Semi-lateral position on the contralateral side with the ankle in plantarflexion.

Instructions for Therapist and Patient:
Immobilise the distal calf proximal to the ankle with one hand. At the same time, with the other hand, press against the head of the first metatarsal to elevate it, invert the foot, and move the ankle into dorsiflexion. [1][2]

Instruct the patient to evert the foot and bring the head of the first metatarsal into plantarflexion. Make sure that the toe extensors are relaxed for this maneuver. [1][2]

Here is a video explaining how to locate the peroneal muscles:

[3]
[4]

Evidence

References

  1. ↑ 1.0 1.1 1.2 1.3 Castro W.H.M, Jerosch J, Grossman T.W. Examination and Diagnosis of Musculoskeletal Disorders. Clinical Examination - Imaging Modalities, Stuttgart ,Georg Thieme Verlag. 2001: 252-253.
  2. ↑ 2.0 2.1 2.2 2.3 Tixa S. Anatomie in vivo 2: Onderste Extremiteit. Het Onderbeen. Bohn Stafleu van Loghum, Houten. 2001:103-107.
  3. ↑ PolkStatePTA. Peroneus longus brevis. Available from: https://youtu.be/HswxN5RxV2Y (accessed 12/12/2018)
  4. ↑ Richard Blake. Peroneal Tendon Muscle Testing. Available from: https://www.youtube.com/watch?v=8tatuNwlReE (accessed 12/03/2025).
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