Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Township, MI
Last reviewed: May 2026
The most important clinical decision with Inferior Heel Pain: Causes & Treatment Options isn’t which treatment to choose — it’s identifying which subtype you have first. Our podiatrists see patients treated for the wrong subtype for months before the correct diagnosis leads to full resolution. Call (810) 206-1402 — expert podiatric care across Michigan.
Inferior heel pain — pain on the bottom of the heel, directly under the calcaneus — is the most common form of heel pain seen in podiatry. The most frequent cause is plantar fasciitis, in which the plantar fascia attachment on the inferior calcaneal tuberosity becomes inflamed from repetitive tensile overload. However, inferior heel pain is not a single diagnosis: multiple conditions produce pain at the same anatomic location with overlapping presentations, and treatment success depends on correctly identifying the primary cause. Heel spurs, calcaneal stress fractures, fat pad syndrome, nerve entrapment (Baxter nerve, tarsal tunnel), and systemic arthritis all cause inferior heel pain and require different treatment approaches.
At Balance Foot & Ankle in Howell and Bloomfield Township, MI, we use weight-bearing X-rays, ultrasound, and clinical examination to differentiate the causes of inferior heel pain and apply targeted treatment rather than one-size-fits-all protocols.
Inferior Heel Pain Differential Diagnosis
| Condition | Location | Key Distinguishing Feature | Diagnostic Test |
|---|---|---|---|
| Plantar fasciitis | Medial plantar calcaneal tuberosity (anteromedial heel bottom) | Worst with first steps in morning; improves with walking; worse after sitting; positive windlass test | Clinical; ultrasound shows fascial thickening >4mm |
| Heel spur (inferior calcaneal) | Plantar calcaneal beak — same site as plantar fasciitis | Spur is a radiographic finding, not a diagnosis; 15–20% of asymptomatic feet have spurs; treat the fasciitis | Weight-bearing lateral X-ray |
| Calcaneal stress fracture | Diffuse central inferior heel; bilateral squeeze test positive | Insidious onset in runners or new walkers; no morning stiffness pattern; heel squeeze (medial-lateral compression) positive | MRI (most sensitive); X-ray often negative early |
| Fat pad atrophy / syndrome | Central plantar heel; pad feels thin under palpation | Diffuse heel pain without morning stiffness pattern; often older patients; heel feels “bone on floor” | Clinical; ultrasound measures fat pad thickness |
| Baxter nerve entrapment | Medial plantar heel; may radiate laterally | Burning/tingling component; Tinel positive at medial heel; often coexists with plantar fasciitis; may be cause of “failed plantar fasciitis” treatment | Clinical; MRI (abductor digiti quinti atrophy) |
| Seronegative spondyloarthropathy (reactive arthritis, AS, psoriatic) | Bilateral or unilateral inferior heel; enthesitis | Often bilateral; young patients; associated back pain; systemic symptoms; HLA-B27 positive | CRP/ESR; HLA-B27; rheumatology referral |
Treatment by Cause
| Diagnosis | First-Line Treatment | Second-Line Treatment |
|---|---|---|
| Plantar fasciitis | Stretching (plantar fascia + calf); supportive footwear; orthotics; NSAIDs; night splints | Ultrasound-guided corticosteroid injection; PRP injection; physical therapy; ESWT |
| Calcaneal stress fracture | Non-weight-bearing 4–6 weeks; walking boot; activity modification | Surgery (rare — displaced fracture or failed conservative care) |
| Fat pad atrophy | Heel cup or cushioned insole; supportive footwear; offloading | Autologous fat injection; accommodative custom orthotic |
| Baxter nerve entrapment | Orthotics addressing pronation; corticosteroid injection at medial heel | Surgical decompression of first branch of lateral plantar nerve |
| Enthesopathy (spondyloarthropathy) | NSAIDs; rheumatology referral; disease-modifying agents | Biologic therapy (anti-TNF) under rheumatology |
Inferior Heel Pain Evaluation at Balance Foot & Ankle
We evaluate inferior heel pain at our Howell (4330 E Grand River Ave) and Bloomfield Township (43494 Woodward Ave #208) offices with clinical examination, weight-bearing X-rays, and in-office ultrasound when soft-tissue diagnosis is needed. Ultrasound-guided injections, custom orthotics, and comprehensive physical therapy referrals are available. Call (810) 206-1402 for an appointment.
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Or call: (810) 206-1402
For a complete clinical overview: Heel Pain Causes & Treatment Guide — every cause of foot and heel pain diagnosed
Doctor Answer
What causes inferior heel pain under the heel bone?
Inferior heel pain beneath the calcaneus most commonly stems from plantar fasciitis at the medial fascial insertion, heel pad atrophy allowing the calcaneus to become insufficiently cushioned, or a calcaneal heel spur — though spurs themselves are rarely the pain source. Calcaneal stress fractures cause diffuse inferior heel pain reproducible with mediolateral squeeze. Baxter’s nerve entrapment beneath the abductor hallucis causes inferior heel pain with or without the classic morning-stiffness pattern. I use precise palpation and imaging to distinguish these overlapping presentations.
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.