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 Farmington 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 Farmington Hills.
Medically Reviewed by: Dr. Tom Biernacki DPM · Board-Certified Podiatrist · Balance Foot & Ankle PLLC · Updated 2026
Sinus Tarsi Syndrome Treatment Near Farmington Hills, MI
Sinus tarsi syndrome treatment near Farmington 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 “never fully healed” after a sprain.
- High Arch Support: PowerStep supination insoles deliver firm, flexible high arch support plus a deep heel cradle for comfort, stability & motion control, helping align feet, reduce pain, and protect against ball & heel pressure.
- All Day Comfort & Support: PowerStep Pinnacle High shoe inserts for women and men use premium dual layer cushioning to deliver heel to toe comfort and responsive bounce back with every step, without going flat.
- Relieves & Helps Prevent Pain: PowerStep Pinnacle High insoles for supination can help alleviate common foot conditions often linked to supination, including plantar fasciitis, Achilles tendonitis, fat pad atrophy, and Morton’s neuroma.
- No Trimming: PowerStep insoles move easily from shoe to shoe. Inserts are sized by shoe size for footwear with removable factory insoles. Designed for walking, running, work & casual dress shoes; pairs well with best walking shoes for women and men.
- Made in the USA: We stand behind our PowerStep Insoles for women and men. Proudly made in the USA & backed by a 30-day money-back guarantee. HSA & FSA Eligible
The Ankle That “Never Fully Healed”
Sinus tarsi syndrome is one of the most underdiagnosed causes of persistent lateral ankle and hindfoot pain. The sinus tarsi is a bony canal between the talus and calcaneus filled with ligamentous tissue, fat, and nerve endings. After an ankle sprain — or repetitive stress in flatfoot patients — this tissue becomes inflamed or fibrotic, producing chronic pain directly in front of the lateral malleolus. The hallmark: point tenderness over the sinus tarsi opening (just anterior to the lateral malleolus) with a feeling of instability on uneven ground. In our Farmington Hills-area patients, sinus tarsi syndrome is routinely misdiagnosed as chronic ankle sprain or peroneal tendinopathy — and patients spend months in physical therapy without improvement because the correct structure was never treated.
Key Takeaway: A diagnostic corticosteroid injection into the sinus tarsi canal is both therapeutic and confirmatory. Significant pain relief within 24–48 hours confirms the diagnosis and often provides lasting resolution. MRI rules out concurrent osteochondral lesions and ligament tears.
Diagnosis and Treatment
Diagnosis: Clinical exam with point tenderness at the sinus tarsi, aggravated by subtalar inversion/eversion. MRI confirms synovitis, ligament disruption, or fibrosis within the canal — and screens for concurrent ATFL/CFL tears and OCD, which commonly coexist. Conservative treatment: Corticosteroid injection under fluoroscopic or ultrasound guidance provides diagnostic confirmation and therapeutic relief in 60–70% of patients. Custom orthotics addressing hindfoot pronation reduce ongoing mechanical irritation of the sinus tarsi. Surgical treatment: Arthroscopic sinus tarsi debridement for patients failing 2–3 injections and structured conservative care — excellent outcomes with return to full activity in 6–8 weeks.
⚠️ Consider Sinus Tarsi Syndrome If:
- Lateral ankle pain that persists more than 6 weeks after an ankle sprain
- Pain directly in front of the outer ankle bone (lateral malleolus)
- Feeling of instability on uneven terrain even without repeat sprains
- Multiple rounds of physical therapy with minimal sustained improvement
- Flatfoot combined with chronic lateral hindfoot pain — pronation overloads the sinus tarsi
American Podiatric Medical Association: Ankle Pain
Getting to Our Office From Farmington Hills
Our Bloomfield Township office at 43494 Woodward Ave #208 is about 15–20 minutes from Farmington Hills via I-696 E 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 Farmington Hills & Michigan
Book Your Appointment →Ready to Get Relief?
Same-day appointments available in Howell & Bloomfield Township, MI
4.9★ | 1,123 Reviews | 3,000+ Surgeries
Or call: (810) 206-1402
📋 Dr. Tom Biernacki, DPM, FACFAS answers:
Sinus tarsi syndrome near Farmington 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 Farmington 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 Farmington 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.
Still have a question about coverage or cost? Book online and we will check your benefits before your visit: Book in Howell · Book in Bloomfield Township. Prefer to talk it through first? Call (810) 206-1402.