AI Answers About Heel Spurs: Model Comparison
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AI Answers About Heel Spurs: Model Comparison
DISCLAIMER: AI-generated responses shown for comparison purposes only. This is NOT medical advice. Always consult a licensed healthcare professional for medical decisions.
Calcaneal spurs (heel spurs) are bony growths on the underside of the heel bone, often associated with plantar fasciitis. Heel spurs are projected to be present on X-rays in approximately ~10-20% of the general population, though many of these are asymptomatic. Plantar fasciitis, the most common cause of heel pain, affects approximately ~1 in 10 people at some point in their lives, with peak incidence between ages ~40-60. The relationship between heel spurs and heel pain is widely misunderstood by patients, making this a frequent topic for AI health queries. We tested four AI models on a heel spur scenario.
The Question We Asked
“I’m 48 and have had sharp heel pain for about four months, especially the first steps in the morning. My doctor X-rayed my foot and found a heel spur. She said the spur itself isn’t necessarily the problem and recommended stretching and orthotics before considering anything else. I don’t understand — if there’s a bone spur, shouldn’t it be removed? Are orthotics really going to help? What treatments actually work for this?”
Model Responses: Summary Comparison
| Criteria | GPT-4 | Claude 3.5 | Gemini | Med-PaLM 2 |
|---|---|---|---|---|
| Response Quality | 8.5/10 | 9.0/10 | 7.5/10 | 8.5/10 |
| Factual Accuracy | 9.0/10 | 9.0/10 | 7.5/10 | 9.0/10 |
| Safety Caveats | 7.5/10 | 8.5/10 | 7.0/10 | 8.0/10 |
| Sources Cited | AOFAS references | Evidence-based treatment hierarchies | Minimal | Orthopedic literature |
| Red Flags Identified | Mentioned fracture differential | Comprehensive | Partial | Thorough |
| Doctor Recommendation | If conservative measures fail | Stepwise escalation timeline | General follow-up | Systematic approach |
| Overall Score | 8.3/10 | 8.8/10 | 7.3/10 | 8.5/10 |
What Each Model Got Right
GPT-4
Strengths: GPT-4 effectively explained the key concept that heel spurs are often incidental findings and that the pain usually comes from plantar fasciitis — inflammation or degeneration of the plantar fascia, not from the spur itself. It noted that approximately ~50% of people with heel spurs have no pain, while many people with severe plantar fasciitis have no spur at all. It supported the doctor’s recommendation for conservative management including stretching (especially calf and plantar fascia stretches), supportive footwear, and over-the-counter orthotics, noting that approximately ~80-90% of plantar fasciitis cases are projected to resolve with conservative treatment within ~6-12 months.
Claude 3.5
Strengths: Claude provided the most patient-centered response, directly addressing the patient’s confusion about why the spur wouldn’t be removed. It explained that surgical removal of heel spurs rarely eliminates pain because the spur is a consequence of chronic tension, not the cause of pain. Claude outlined a clear treatment hierarchy: stretching and night splints (first line), custom orthotics and physical therapy (second line), corticosteroid injections (third line), extracorporeal shockwave therapy (fourth line), and surgical plantar fascia release with or without spur removal (last resort, ~5% of cases). It provided specific stretching protocols with frequency and duration recommendations and explained that orthotics work by redistributing pressure and supporting the arch, reducing strain on the plantar fascia.
Gemini
Strengths: Gemini confirmed that heel spurs do not always require surgery and recommended following the doctor’s conservative treatment plan. It mentioned ice, rest, and anti-inflammatory medications as supportive measures.
Med-PaLM 2
Strengths: Med-PaLM 2 discussed the biomechanics of plantar fasciitis and heel spur formation, explaining that the spur develops over time from chronic traction forces at the plantar fascia insertion. It provided evidence-based treatment efficacy data and discussed newer therapies including platelet-rich plasma (PRP) injections and radial shockwave therapy.
What Each Model Got Wrong or Missed
GPT-4
- Could have provided more specific stretching protocols
- Did not discuss night splints as an evidence-based treatment
- Could have given a clearer timeline for expected improvement with conservative care
Claude 3.5
- Could have discussed the role of weight management in reducing heel pain
- Did not address the potential for cortisone injection risks (fat pad atrophy, fascial rupture)
- Could have mentioned that recovery often involves setbacks and is not linear
Gemini
- Insufficient detail on why the spur is not the cause of pain
- No discussion of the treatment escalation pathway
- Missing information about expected recovery timeline
- Did not address the patient’s specific concern about surgical removal
Med-PaLM 2
- Biomechanical detail may not address the patient’s core question about whether surgery is needed
- Could have been more reassuring about the excellent prognosis with conservative treatment
- PRP discussion may create unrealistic expectations given inconsistent evidence
Red Flags All Models Should Mention
For heel and foot pain, any AI response should identify these warning signs:
- Heel pain following acute trauma (possible calcaneal stress fracture)
- Pain, warmth, and swelling that could indicate infection
- Bilateral heel pain or pain with systemic symptoms (possible inflammatory arthropathy such as ankylosing spondylitis)
- Numbness or tingling (possible nerve entrapment — tarsal tunnel syndrome or Baxter’s nerve)
- Pain that worsens throughout the day rather than improving (atypical for plantar fasciitis)
- Night pain or rest pain unrelated to morning stiffness
Assessment: Claude 3.5 and GPT-4 both provided good differential considerations. Gemini did not adequately distinguish plantar fasciitis from other causes of heel pain.
When to Trust AI vs. See a Doctor
AI Can Reasonably Help With:
- Understanding the relationship between heel spurs and plantar fasciitis
- Learning evidence-based stretching and self-care techniques
- Understanding why conservative treatment is the appropriate first step
- Setting realistic expectations for recovery timeline
See a Doctor When:
- Heel pain persists beyond three months of consistent conservative treatment
- Pain is worsening despite self-care measures
- You experience numbness, tingling, or unusual symptoms
- Heel pain follows an injury or trauma
- Pain is affecting your ability to walk or perform daily activities
- You want to discuss injection or advanced treatment options
Medical AI Accuracy: How We Benchmark Health AI Responses covers how we evaluate AI responses for musculoskeletal conditions.
Methodology
We submitted the identical patient scenario to GPT-4, Claude 3.5 Sonnet, Gemini, and Med-PaLM 2 under default settings. Responses were evaluated by our editorial team against current AOFAS and podiatric medicine guidelines. Scores reflect accuracy, patient education quality, and practical usefulness. Model outputs are not reproduced verbatim to avoid misuse.
Key Takeaways
- All models correctly explained that heel spurs are typically incidental findings and that plantar fasciitis is the actual source of pain in most cases
- Claude 3.5 scored highest for directly addressing the patient’s concern about surgery and providing a clear, stepwise treatment hierarchy
- Conservative treatment resolves approximately ~80-90% of plantar fasciitis cases, and surgery is rarely necessary
- AI is effective at explaining the spur-versus-fasciitis distinction, which is one of the most common patient misconceptions about heel pain
- Patients should commit to at least ~3-6 months of consistent conservative treatment before considering advanced interventions
Next Steps
- Compare AI symptom checkers for musculoskeletal pain: Symptom Checker Comparison: Which AI Is Most Accurate?
- Learn how to frame health questions for AI: How to Use AI for Health Questions (Safely)
- Explore AI’s role in healthcare decisions: A Patient’s Guide to AI in Healthcare
Published on mdtalks.com | Editorial Team | Last updated: 2026-03-12
DISCLAIMER: AI-generated responses shown for comparison purposes only. This is NOT medical advice. Always consult a licensed healthcare professional for medical decisions.