Tibial Nerve Decompression Surgery: Tarsal Tunnel Release and Baxter Nerve Release

Quick answer: Tibial Nerve Decompression Surgery Tarsal Tunnel Baxter Nerve Release is a common foot/ankle topic that affects many patients. The 2026 evidence-based approach combines proper diagnosis, conservative-first treatment, and escalation only when needed. We treat this regularly at our Howell and Bloomfield Township practices. Call (810) 206-1402.

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Township, MI. Last updated April 2026.

Surgical Anatomy and Indications

The posterior tibial nerve and its branches are compressed at several anatomical sites in the foot and ankle that require specific surgical release approaches. The tarsal tunnel proper — the fibro-osseous channel behind the medial malleolus — is the most common compression site, producing classic tarsal tunnel syndrome symptoms of plantar and heel burning, tingling, and numbness. The Baxter nerve — the first branch of the lateral plantar nerve — is compressed as it passes between the abductor hallucis muscle and the medial margin of the quadratus plantae, producing inferior heel pain that is anatomically and clinically distinct from plantar fasciitis and from classic tarsal tunnel syndrome. The medial and lateral plantar nerves may be compressed at more distal sites within the foot. Electrodiagnostic studies (nerve conduction velocity and EMG) identify the specific site of compression and confirm surgical planning.

Tarsal Tunnel Release Technique

Surgical tarsal tunnel release is performed through a curved incision posterior and inferior to the medial malleolus, following the course of the posterior tibial nerve. The flexor retinaculum — the fibrous roof of the tarsal tunnel — is incised longitudinally along its entire length, decompressing the tunnel and reducing pressure on the posterior tibial nerve and its branches. The nerve is inspected for intraneural fibrosis, neuroma formation, or space-occupying lesions (ganglion cysts, varicose veins, lipomas) that may require specific management. Each branch of the posterior tibial nerve — the medial plantar, lateral plantar, and calcaneal branches — is followed distally to its fibro-osseous entrance and the overlying tissue is released if compression is identified at branch level. Complete decompression of all branches, not just the main trunk, is critical for optimal outcomes in patients with multi-level compression.

Baxter Nerve Release

Baxter nerve release is performed through the same medial approach, extending the dissection into the abductor hallucis muscle belly to identify and release the nerve as it passes through its constrained interval. When combined with plantar fascia release at the same procedure, results are excellent for patients whose heel pain has both Baxter nerve and plantar fascia components. Outcomes of tarsal tunnel release and Baxter nerve decompression in properly selected patients with confirmed electrodiagnostic abnormalities are good to excellent in approximately 75 to 85 percent of cases. Patients with severe axonal loss on EMG and those with significant diabetes-related neuropathy superimposed on mechanical nerve compression have more modest outcomes. At Balance Foot & Ankle, we perform nerve decompression with careful technique and comprehensive pre-surgical evaluation to optimize patient selection and surgical outcomes.

Related Guides

• Plantar Fasciitis
• Toenail Fungus
• Neuropathy
• Bunions
• Orthotics

When to Consider Tarsal Tunnel Release Surgery

If you have numbness, tingling, or burning on the bottom of your foot from tarsal tunnel syndrome that hasn’t improved with conservative treatment, surgical decompression can relieve nerve compression. At Balance Foot & Ankle, we perform nerve decompression surgery at our Howell and Bloomfield Township offices.

Learn About Our Nerve Treatment Options | Book Your Appointment | Call (810) 206-1402

Clinical References

1. Ahmad M, Tsang K, Mackenney PJ, Adedapo AO. “Tarsal tunnel syndrome: a literature review.” Foot and Ankle Surgery. 2012;18(3):149-152.
2. Sammarco GJ, Chang L. “Outcome of surgical treatment of tarsal tunnel syndrome.” Foot & Ankle International. 2003;24(2):125-131.
3. Baxter DE, Pfeffer GB. “Treatment of chronic heel pain by surgical release of the first branch of the lateral plantar nerve.” Clinical Orthopaedics and Related Research. 1992;(279):229-236.

Differential Diagnosis: What Else Could It Be?

Not every case of tarsal tunnel syndrome is straightforward. In our clinic we routinely rule out three look-alike conditions before confirming the diagnosis. If your symptoms don’t match the classic presentation, one of these may explain the pain — which is why physical exam matters more than self-diagnosis.

Condition	How It Differs
Plantar fasciitis	Sharp morning heel pain at the medial calcaneal tubercle, NOT numbness or shooting pain into the toes.
Diabetic peripheral neuropathy	Bilateral stocking-glove distribution, progressive, affects toes first — NOT reproduced by Tinel’s at medial ankle.
S1 radiculopathy	Pain originates in low back, follows S1 dermatome, positive straight-leg raise.

Red Flags — When to See a Podiatrist Now

In Our Clinic: What We See

In-Office Treatment at Balance Foot & Ankle

If home treatment isn’t providing relief for your foot and ankle conditions, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.

Related Care at Balance Foot & Ankle

Clinical tarsal services at our Howell and Bloomfield Township offices.

Tarsal Tunnel ReleasePeripheral Neuropathy