Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
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| Condition | Location | Mechanism | X-ray Finding | Distinguishing Feature |
|---|---|---|---|---|
| Haglund’s Deformity (Pump Bump) | Posterosuperior calcaneal prominence | Rigid shoe counter compresses retrocalcaneal bursa and Achilles against posterosuperior calcaneal spur | Prominent posterosuperior calcaneal projection; Parallel Pitch Lines (PPL) method | Worse with rigid-backed shoes (pumps, dress shoes); retrocalcaneal bursa swelling visible |
| Insertional Achilles Tendinopathy | Achilles insertion on calcaneal posterior tuberosity | Repetitive tension loading at enthesis; calcification develops within tendon | Calcification at Achilles insertion; may have associated posterior spur | Intratendinous calcification on MRI; tenderness at insertion (not above); degenerative change |
| Non-Insertional Achilles Tendinopathy | 2–6 cm proximal to insertion (“watershed zone”) | Repetitive microtrauma in watershed zone; poor blood supply | Normal unless chronic; MRI shows midsubstance fusiform thickening | Tenderness 2–6 cm above insertion; no bony spur; typically in runners |
| Retrocalcaneal Bursitis (isolated) | Retrocalcaneal bursa (between Achilles and posterosuperior calcaneus) | Mechanical compression or rheumatologic disease (RA, gout, seronegative SpA) | Soft tissue swelling; may show Haglund’s spur | Fluid in retrocalcaneal bursa on MRI; positive for RA/gout if systemic cause |
| Superficial Calcaneal Bursitis | Superficial bursa between Achilles and skin | Shoe counter friction; no bony abnormality required | Normal bone; soft tissue swelling superficial to Achilles | Fluctuant superficial swelling; not in retrocalcaneal space |
| Treatment | Indication | Technique | Success Rate | Recovery |
|---|---|---|---|---|
| Footwear Modification | All Haglund’s — first-line | Open-back shoes; soft heel counter; heel lift 10–12mm reduces Achilles tension | 60–70% improve with footwear change alone | Immediate; wear indefinitely |
| Physical Therapy (Eccentric Protocol) | Insertional or non-insertional Achilles + Haglund’s | Alfredson eccentric protocol × 12 weeks; Silbernagel combination; avoid painful ROM initially | 60–75% improve with PT; lower for insertional vs non-insertional | 12 weeks; slow improvement |
| ESWT (Shockwave Therapy) | Insertional Achilles tendinopathy ± Haglund’s; failed PT 3 months | 3 weekly radial sessions, 2,000 pulses; breaks up calcification, stimulates healing | 65–80% improvement in insertional tendinopathy | 3 weeks of sessions; improvement over 3–6 months |
| Endoscopic Calcaneoplasty (Arthroscopic) | Haglund’s deformity failed conservative care 6 months | 2 portals posterior ankle; resect posterosuperior calcaneal prominence; debride retrocalcaneal bursa | 85–90% good-to-excellent outcomes; faster than open | 2–4 weeks NWB; 8–12 weeks return to sport |
| Open Calcaneal Osteotomy + Achilles Repair | Large Haglund’s with calcified Achilles insertion; failed endoscopic | Detach Achilles, resect calcaneal prominence + intratendinous calcium, reattach with anchors | 80–90%; indicated when >50% Achilles detachment required | 8–12 weeks NWB; 6–9 months full sports |
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Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
Haglund’s deformity — a bony prominence at the posterior-superior calcaneus — is commonly called the “pump bump” because of its association with rigid-backed pump shoes that press on the back of the heel. The prominence causes pain through a combination of direct bursal impingement (retrocalcaneal bursitis between the Achilles and the bone) and mechanical irritation of the insertional Achilles tendon against the bony spur. At Balance Foot & Ankle PLLC, Dr. Tom Biernacki provides accurate diagnosis and a full range of conservative and surgical treatment for Haglund’s deformity in Michigan patients.
Anatomy and Pain Mechanism
The Achilles tendon inserts on the posterior calcaneus across a footprint approximately 1.5 cm wide and 2 cm tall. Between the Achilles and the posterior-superior calcaneal prominence lies the retrocalcaneal bursa — a small fluid-filled sac that normally allows the tendon to glide over the bone. In Haglund’s deformity, the prominent posterior-superior calcaneal angle is enlarged beyond normal — mechanically impinging on the retrocalcaneal bursa and the Achilles insertion. Pain sources: Retrocalcaneal bursitis (inflammation of the bursa from repetitive impingement), insertional Achilles tendinopathy (chronic tendon degeneration at the insertion from mechanical stress), and superficial bursitis (from shoe counter direct pressure on the bony prominence). High-arch (cavus) foot posture is a risk factor — the inverted hindfoot position projects the posterior-superior calcaneal angle more prominently.
Conservative Treatment
Heel lifts: Raising the heel 1/4-3/8 inch reduces the angle of Achilles tension on the calcaneal insertion, simultaneously reducing impingement of the prominence in the shoe counter. The most effective non-surgical intervention for Haglund’s pain. Open-back footwear: Sandals, clogs, and backless shoes eliminate direct shoe counter impingement on the prominence — dramatically improves pain in patients willing to modify footwear. Custom orthotics: Controlling cavovarus foot posture reduces the posterior-superior calcaneal projection angle; orthotic heel lift incorporated for combined mechanical effect. Physical therapy: Eccentric calf exercises, Achilles stretching, and cross-friction massage for the insertional tendinopathy component. Corticosteroid injection: Into the retrocalcaneal bursa (not the Achilles tendon substance) for bursitis-predominant presentations. PRP injection: For insertional Achilles tendinopathy component when conservative measures partially address the bursitis. Most patients who modify footwear and use heel lifts achieve adequate symptom control without surgery.
Surgical Resection of Haglund’s Deformity
Surgical resection is indicated when conservative care at 4-6 months fails to provide adequate relief. Open Haglund’s resection: Posterolateral or posterior central approach, careful detachment of the lateral Achilles tendon fibers from the prominence, resection of the posterior-superior calcaneal spur with osteotome and rongeur, retrocalcaneal bursectomy, and reattachment of detached tendon fibers with suture anchors if needed. Endoscopic resection: Two-portal technique — retrocalcaneal bursa visualization and bursectomy, calcaneal prominence reduction under arthroscopic control. Less soft tissue disruption, faster recovery. Indicated when <50% of Achilles footprint detachment is needed. Calcaneal osteotomy: Closing wedge osteotomy of the calcaneus when the Haglund’s is extremely prominent — translates the posterior calcaneus away from the Achilles insertion rather than resecting the bone directly. Recovery: non-weight-bearing 4-6 weeks post-open resection, 2-4 weeks post-endoscopic, progressive return to athletic activity at 4-6 months.
Dr. Tom's Product Recommendations
Heel Lift Inserts for Haglund’s Deformity
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3/8 inch heel lift inserts — the first-line conservative treatment for Haglund’s deformity and pump bump, reducing Achilles insertion angle and shoe counter impingement on the posterior calcaneal prominence.
Dr. Tom says: “My podiatrist recommended heel lift inserts for my Haglund’s pump bump and the immediate reduction in shoe pressure made walking significantly more comfortable.”
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Use bilaterally to avoid leg length discrepancy from unilateral elevation
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Maximum cushion shoe with soft heel counter — recommended for Haglund’s deformity patients who need daily footwear with minimal posterior heel pressure and excellent cushioning.
Dr. Tom says: “My podiatrist recommended Hoka Bondi for my pump bump because the soft heel counter didn’t press on my Haglund’s prominence like my previous shoes.”
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Verify the heel counter softness before purchasing — bring to clinic to assess fit against the prominence
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✅ Pros / Benefits
- Heel lifts and footwear modification provide rapid relief for many Haglund’s patients without surgery
- Endoscopic resection offers faster recovery with smaller incisions than open technique
- Retrocalcaneal bursectomy and Achilles debridement simultaneously addresses all pain generators
- Calcaneal osteotomy option for severe prominence without extensive Achilles detachment
❌ Cons / Risks
- Open Haglund’s resection requires 4-6 weeks non-weight-bearing post-operatively
- Footwear modification (open-back shoes) is highly effective but not always acceptable to patients
- Insertional Achilles tendinopathy component responds more slowly than bursitis to conservative care
Dr. Tom Biernacki’s Recommendation
Haglund’s deformity management starts with footwear counseling — if I can get a patient to stop wearing rigid-backed dress shoes and pumps that hit directly on the prominence, heel lifts and orthotics often resolve the bursitis component effectively. The patients who struggle most are the ones whose occupation or social environment requires formal footwear that they can’t modify. For those patients, and for anyone with significant insertional Achilles tendinopathy combined with the bony deformity, surgical resection produces very good outcomes — particularly with the endoscopic technique, which has less post-op pain and faster recovery.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
What is Haglund’s deformity?
Haglund’s deformity is a bony enlargement of the posterior-superior calcaneus — the upper-back corner of the heel bone — that causes pain through impingement of the retrocalcaneal bursa and insertional Achilles tendon. The prominent bone presses against the overlying bursa and is additionally irritated by rigid shoe counters, producing the ‘pump bump’ — a visible, tender swelling at the back of the heel. High-arch (cavus) feet are particularly prone to Haglund’s deformity because the inverted hindfoot position tilts the posterior calcaneal angle more prominently into the shoe. It is not the same as a heel spur (which occurs on the plantar/bottom of the heel).
What is the difference between Haglund’s deformity and Achilles tendinopathy?
Haglund’s deformity is a bony prominence on the posterior-superior calcaneus that mechanically impinges on the Achilles tendon and retrocalcaneal bursa. Achilles tendinopathy refers to degeneration within the tendon itself — either midsubstance (4-6 cm above the heel) or insertional (at the bone attachment). These conditions frequently coexist: the Haglund’s prominence causes insertional Achilles tendinopathy by continuously abrading the tendon fibers at the insertion. Treatment differs: pure Haglund’s bursitis responds to heel lifts and footwear; combined Haglund’s with insertional tendinopathy requires addressing both the bone and the tendon degeneration.
Can Haglund’s deformity be treated without surgery?
Yes — most patients with Haglund’s deformity can be managed without surgery: heel lifts (1/4-3/8 inch) reduce Achilles tension and shoe counter impingement, open-back footwear eliminates direct pressure on the prominence, physical therapy addresses the Achilles tendinopathy component, and retrocalcaneal bursa corticosteroid injection controls inflammation. The most critical conservative intervention is footwear modification — patients who switch to open-back or soft-backed shoes have dramatically better outcomes from conservative care. Surgery is reserved for patients who fail 4-6 months of conservative care with appropriate footwear and heel lifts.
What happens during Haglund’s resection surgery?
Haglund’s resection surgery removes the bony prominence from the posterior-superior calcaneus to eliminate the mechanical impingement. Open technique: a posterior or posterolateral incision, careful identification and partial detachment of the Achilles tendon, osteotome resection of the prominence, bursectomy of the retrocalcaneal bursa, and reattachment of the Achilles with suture anchors if needed. Endoscopic technique: two small portals, visualization of the bursa and calcaneus with an arthroscope, bursa removal and bone resection with motorized instruments. Endoscopic recovery is faster (2-4 weeks non-weight-bearing vs. 4-6 weeks open). Both techniques produce excellent pain relief with high patient satisfaction.
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When should I see a podiatrist?
If symptoms persist past 2 weeks, affect your normal activity, or are accompanied by red-flag symptoms (warmth, redness, swelling, inability to bear weight).
What does treatment cost?
Most diagnostic visits and conservative treatments are covered by Medicare and major insurers. Out-of-pocket costs vary by your specific plan.
How quickly can I get an appointment?
Most non-urgent cases see us within 5 business days. Urgent cases (sudden pain, possible fracture) typically same or next business day.
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Related Conditions
American Academy of Orthopaedic Surgeons: Haglund’s Deformity
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Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon 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 reached over one million views.