Muscles
Peroneus Tertius Trigger Points
Symptom Area: Leg, Ankle and Foot
Peroneus Tertius Trigger Points are explored here through their location and referred pain pattern. Muscle knots is an everyday term used for tender muscular spots; myofascial pain describes pain involving muscle and its surrounding connective tissue. Small dorsiflexor and evertor on the front of the lower leg; trigger points cause pain at the front and outer ankle.
Where you feel it
When the Peroneus Tertius holds active trigger points, you usually notice it as anterior ankle pain, shin splint-type pain and weak ankles. Where the pain spreads: Pain over the front and outer aspect of the ankle, sometimes spreading onto the outer heel or dorsum of the foot. What often sets it off: Ankle sprains and repeated inversion episodes, running on cambered surfaces, unstable footwear, prolonged driving with the foot on the pedal.
Overview
Peroneus tertius sits alongside extensor digitorum longus in the anterior compartment and inserts on the fifth metatarsal, assisting dorsiflexion and eversion. It is usually shown with the peroneal group because their pain patterns share the lateral ankle.
Trigger point locations
A point low in the anterolateral leg, just above the ankle in front of the lateral malleolus.
Referred pain pattern
Pain over the front and outer aspect of the ankle, sometimes spreading onto the outer heel or dorsum of the foot.
Palpation & testing
With the ankle relaxed, palpate the small belly just anterior to the distal fibula; resisted dorsiflexion with eversion makes it stand out.
Common causes
Ankle sprains and repeated inversion episodes, running on cambered surfaces, unstable footwear, prolonged driving with the foot on the pedal.
Self-care & clinical treatment
Ankle mobility and balance work, peroneal strengthening after sprains, self-massage of the anterolateral leg. Clinically: manual release or needling with rehabilitation of ankle stability.
Treatment protocol
For Peroneus Tertius, the general protocol applies: sustained pressure release on the taut band, then stretch and active movement in the newly gained range.
Position and palpation: With the ankle relaxed, palpate the small belly just anterior to the distal fibula; resisted dorsiflexion with eversion makes it stand out.
Regional precaution for clinicians: In the calf, ankle and foot the tibial nerve and posterior tibial vessels in the deep posterior compartment, the common peroneal nerve at the fibular neck and the plantar neurovascular bundle guide needle placement.
Primary Symptoms
Secondary Symptoms
Often confused with
These muscles cause the same primary symptoms, so they are checked together:
Related muscles in this region
References
- • triggerpoints.net — reference
Medically reviewed by: Marco Aruffo — physiotherapist since 2006, specialised in myofascial pain · Last reviewed:
