Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Township, MI
Last reviewed: May 2026
Sinus tarsi syndrome near Auburn Hills is the most common cause of persistent outer ankle pain after a “healed” ankle sprain — and it’s almost always missed because it’s in a different structure than the ligaments that were treated. One targeted injection both diagnoses and treats it simultaneously. Call (810) 206-1402 — chronic ankle pain evaluations in Auburn Hills.
Medically Reviewed by: Dr. Tom Biernacki DPM · Board-Certified Podiatrist · Balance Foot & Ankle PLLC · Updated 2026
Sinus Tarsi Syndrome Treatment Near Auburn Hills, MI
Sinus tarsi syndrome treatment near Auburn Hills, MI is available at Balance Foot & Ankle in Bloomfield Township. Dr. Biernacki DPM diagnoses and treats this frequently overlooked cause of persistent lateral ankle pain — using corticosteroid injection, custom orthotics, and arthroscopic debridement when needed. Call (810) 206-1402 if your ankle pain never resolved after a sprain.
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When Ankle Pain Persists Months After a Sprain
Sinus tarsi syndrome is a frequently missed cause of persistent lateral ankle and hindfoot pain. The sinus tarsi — a small canal between the talus and calcaneus — contains ligamentous tissue, fat, and nerve endings that become inflamed or fibrotic after ankle sprains or from chronic flatfoot stress. The characteristic presentation is point tenderness directly anterior to the lateral malleolus, pain with subtalar motion, and a vague sense of ankle instability on uneven terrain. In our Auburn Hills-area patients, we see this condition routinely confused with chronic ankle sprain or peroneal tendinopathy — the difference lies in the precise location of tenderness and response to a diagnostic injection into the sinus tarsi canal.
Key Takeaway: A fluoroscopy-guided corticosteroid injection into the sinus tarsi provides both diagnosis and treatment — 60–70% of patients achieve lasting relief. MRI confirms the diagnosis and screens for concurrent osteochondral lesions.
Diagnosis and Treatment
Diagnosis combines clinical examination (tenderness at the sinus tarsi opening, pain with subtalar motion) with MRI confirming synovitis or ligament disruption within the canal. We always screen for concurrent ATFL/CFL tears and osteochondral defects, which coexist in a significant percentage. Conservative treatment centers on a corticosteroid injection into the sinus tarsi under fluoroscopic or ultrasound guidance — diagnostic and therapeutic in one procedure. Custom orthotics with medial arch support reduce subtalar pronation stress. Surgical treatment: Arthroscopic sinus tarsi debridement for patients failing conservative care — outpatient procedure with excellent outcomes and 6–8 week return to full activity.
⚠️ Consider Sinus Tarsi Syndrome If:
- Lateral ankle pain persisting more than 6 weeks after an ankle sprain
- Pain just anterior to the lateral malleolus — not behind or below it
- Instability on uneven ground without recurrent sprains
- Physical therapy for “ankle sprain” has not resolved symptoms
- Flatfoot with persistent lateral hindfoot pain — pronation chronically overloads the sinus tarsi
American Podiatric Medical Association: Ankle Pain
Getting to Our Office From Auburn Hills
Our Bloomfield Township office at 43494 Woodward Ave #208 is about 18 minutes from Auburn Hills via I-75 S to Woodward Ave. We accept most major insurance. Call (810) 206-1402 or book online.
Chronic Lateral Ankle Pain? Get a Proper Diagnosis
Balance Foot & Ankle · Serving Auburn Hills & Michigan
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📋 Dr. Tom Biernacki, DPM, FACFAS answers:
Sinus tarsi syndrome near Auburn Hills causes pain and instability at the lateral hindfoot, in the small canal between the talus and calcaneus called the sinus tarsi. It is often triggered by repeated ankle sprains or flatfoot deformity. Our podiatrist serving Auburn Hills diagnoses this condition with clinical examination and MRI, which shows soft tissue damage or fluid in the sinus tarsi. Conservative treatment includes anti-inflammatory therapy, corticosteroid injections directly into the sinus tarsi, custom orthotics to control rearfoot motion, and physical therapy for proprioceptive retraining. Most patients near Auburn Hills respond well to a combination of injection therapy and orthotics. When conservative management fails after three to six months, arthroscopic debridement of the sinus tarsi provides excellent relief with a short recovery period.
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.
More questions patients ask
What is sinus tarsi syndrome and what causes it?
The sinus tarsi is a small tunnel between the talus and calcaneus bones on the outer side of the hindfoot, containing nerves, blood vessels, and ligamentous tissue. Sinus tarsi syndrome occurs when this canal becomes inflamed — most commonly after ankle sprains that tear the ligaments within the sinus tarsi, or from overpronation that chronically compresses the canal. Patients describe a feeling of ankle instability and a specific aching pain just in front of and below the outer ankle bone that's worsened by walking on uneven ground.
How is sinus tarsi syndrome diagnosed and treated?
Diagnosis is primarily clinical — palpation directly into the sinus tarsi opening reproduces the characteristic pain. MRI confirms inflammation, fat pad edema, and any ligament tears within the tunnel. A diagnostic corticosteroid injection into the sinus tarsi that provides significant temporary relief confirms the diagnosis. Conservative treatment includes custom orthotics controlling pronation to decompress the canal, physical therapy, and a series of corticosteroid injections. Surgical arthroscopic debridement is reserved for cases failing 6 months of conservative care.
Is sinus tarsi syndrome related to chronic ankle instability?
Yes — there's significant overlap. Many patients with chronic lateral ankle instability have concurrent sinus tarsi syndrome, as the same lateral ankle sprain that damages the ATFL ligament also injures the interosseous talocalcaneal ligament within the sinus tarsi. Treating ankle instability without recognizing concomitant sinus tarsi syndrome leaves patients with ongoing symptoms despite successful ligament stabilization. A podiatrist evaluates both conditions simultaneously to ensure comprehensive treatment.
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