PERONEUS BREVIS

• Origin

Lower two-thirds of the lateral surface of the fibula.

• Insertion

Tuberosity of the fifth metatarsal bone of the foot.

• Agonist(s)

- Peroneus longus

- Peroneus tertius

• Antagonist(s)

- Tibialis posterior

- Flexor digitorum longus

• Function

Eversion of the foot (turning sole of foot outward), plantarflexion of the foot

TRIGGER POINT(S)

• Location

Trigger points can be found along the length of the muscle, particularly in the middle portion.

• Pain Referral Pattern

Pain may refer to the lateral lower leg, the outer ankle, and sometimes down to the outer edge of the foot.

It can cause aching, burning, or sharp pain along the outer calf, and may contribute to discomfort or restricted movement in the ankle and foot.

• Potential Causes

▫ Overuse or repetitive activities involving foot eversion and plantar flexion, such as running, walking, or certain sports.

▫ Poor footwear or improper foot mechanics.

▫ Muscle imbalances between the peroneus brevis and other lower leg muscles.

▫ Trauma or injury to the lateral leg or ankle.

▫ Prolonged standing or sedentary lifestyle.

• Prevention Tips

▫ Use proper techniques and form during activities involving foot eversion and plantar flexion to avoid overloading the peroneus brevis.

▫ Incorporate regular stretching and strengthening exercises for the lower leg muscles.

▫ Ensure proper warm-up and cooldown routines before and after exercise.

▫ Maintain good posture and ergonomics during daily activities.

▫ Wear appropriate footwear that provides good support and fit to avoid muscle strain.

▫ Gradually increase activity intensity to avoid overuse injuries.