Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
Peroneal tendon tears occur with the same ankle inversion mechanism as sprains — but the specific MRI finding that distinguishes a tendon tear from a simple ligament sprain completely changes the treatment plan. Call (810) 206-1402 — Balance Foot & Ankle serves Auburn Hills and all of Southeast Michigan.
Medically Reviewed by: Dr. Tom Biernacki DPM · Board-Certified Podiatrist · Balance Foot & Ankle PLLC · Updated 2026
Peroneal Tendon Injury Near Auburn Hills, MI
Peroneal tendon injury evaluation and treatment near Auburn Hills, MI is available at Balance Foot & Ankle in Bloomfield Hills. Dr. Biernacki DPM differentiates peroneal tendinopathy, longitudinal split tears, and subluxation with MRI, identifies the high-arch cavus foot as a major risk factor, and guides treatment from bracing and rehabilitation to surgical repair when tendons snap over the fibula. Call (810) 206-1402.
Outer Ankle Pain That Gets Worse With Activity: The Peroneal Tendons
The peroneal tendons run together behind the lateral malleolus in a fibro-osseous groove, held in place by the superior peroneal retinaculum. They are the primary evertors of the foot and the main ankle stabilizers against inversion injury. Peroneal tendon pathology is the most commonly under-diagnosed cause of chronic lateral ankle pain — often mislabeled as a persistent ankle sprain. There are three distinct conditions with different presentations and treatments. Peroneal tendinopathy: Degenerative thickening and pain without structural tear — most common. Lateral ankle/hindfoot aching worsened by activity, tender along the tendon posterior to the fibula. Peroneal longitudinal split tear: The peroneus brevis is most vulnerable, splitting longitudinally as it wraps around the fibula. MRI confirms. Peroneal subluxation/dislocation: Tendons snap over or dislocate anterior to the lateral malleolus — the patient reports a “snapping” sensation. The critical risk factor for Auburn Hills-area patients: high-arch (cavus) foot — hindfoot varus alignment increases lateral loading and peroneal stress, predisposing to all three peroneal conditions.
Key Takeaway: Three entities: tendinopathy (conservative), longitudinal split tear (surgical repair if conservative fails), subluxation/dislocation (often requires surgical retinaculum repair). MRI distinguishes all three. High-arch cavus foot = major risk factor — address underlying alignment. “Persistent ankle sprain” not improving = get MRI of peroneal tendons. Snapping outer ankle = subluxation until proven otherwise.
Treatment by Diagnosis
Peroneal tendinopathy: Eccentric strengthening program, custom orthotics with lateral forefoot posting for cavus foot, immobilization boot for acute flares, physical therapy. Avoid direct corticosteroid injection into the tendon substance — rupture risk. Longitudinal split tear: Boot immobilization 6-8 weeks, then rehabilitation. Surgical repair for persistent symptoms: debridement + side-to-side repair. Tears with >50% cross-section loss: peroneus longus to brevis tenodesis. Peroneal subluxation: Acute: boot immobilization may allow retinaculum healing. Chronic: surgical repair of the superior peroneal retinaculum ± groove deepening procedure. Return to sport: 3-4 months after surgery. Cavus foot correction: Calcaneal osteotomy for hindfoot varus reduces peroneal stress and may be combined with tendon repair.
⚠️ See a Podiatrist If:
- Lateral ankle pain persisting more than 6 weeks after an ankle sprain — peroneal tendon tear
- Snapping or popping sensation at the outer ankle — peroneal subluxation/dislocation
- High-arch foot with recurrent lateral ankle sprains — cavus alignment driving peroneal stress
- Outer ankle swelling along the tendon (not the joint line) — tendinopathy or tear
- Weakness with foot eversion (turning foot outward) — peroneal tendon disruption
OrthoInfo – AAOS: Peroneal Tendon Injuries
Getting to Our Office From Auburn Hills
Our Bloomfield Hills office at 43494 Woodward Ave #208 is about 20 minutes from Auburn Hills via I-75 S to Woodward Ave. We accept most major insurance. Call (810) 206-1402 or book online.
Outer Ankle Pain Not Resolving? Get a Peroneal Tendon Evaluation
Balance Foot & Ankle · Serving Auburn Hills & Michigan
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📋 Dr. Tom Biernacki, DPM, FACFAS answers:
Peroneal tendon injuries near Auburn Hills — including tendinitis, longitudinal splits, and subluxation — are treated based on severity. Conservative care includes rest, ice, NSAIDs, ankle bracing to limit inversion stress, and custom orthotics with a lateral heel post to unload the peroneals. Physical therapy rebuilding proprioception and lateral ankle strength is essential for full recovery. A walking boot is used for 4-6 weeks in moderate cases. Ultrasound-guided PRP or corticosteroid injection accelerates tendon healing. Surgical repair is needed for complete tears, chronic subluxation, or failed conservative care. Our podiatry clinic serving Auburn Hills provides same-week evaluation and ultrasound imaging.
Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.