Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.
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Medically Reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatrist, Balance Foot & Ankle Specialists, Michigan. Last updated April 2026.
Treatment at Balance Foot & Ankle: Achilles Tendon Treatment →
Two Different Problems, Similar Symptoms
Stress fractures and tendinitis both cause foot pain with activity that worsens over time — and both are common in runners, athletes, and active adults. The distinction matters enormously because treatment is completely different: stress fractures require rest and protected weight-bearing, while tendinitis typically benefits from controlled progressive loading. Misdiagnosis leads to extended pain and potential worsening of the injury.
Where the Pain Is Located
Location provides important clues. Metatarsal stress fractures cause pain along the shaft of a metatarsal bone — typically the 2nd or 3rd — that is exquisitely tender with direct palpation over a small, specific point. Tendinitis pain follows the course of the tendon and is spread over a longer area. Achilles tendinitis pain is diffuse along the back of the heel and lower leg; a calcaneal stress fracture causes pinpoint heel tenderness with a medial-lateral squeeze of the heel bone (the squeeze test).
Pain Pattern During Activity
Stress fracture pain typically comes on at a predictable point during a run and worsens progressively — many stress fracture patients describe pain that forces them to stop mid-run. Tendinitis pain is often worse at the start of activity, improves with warm-up, then worsens again toward the end. Both worsen with increased training volume, but stress fractures worsen faster and more dramatically.
Imaging Differences
Standard X-rays miss most stress fractures in the first 2-4 weeks — the classic finding of a fracture line or periosteal reaction develops late. MRI is the gold standard for early stress fracture diagnosis, showing bone marrow edema days after injury. Tendinitis is diagnosed on clinical examination and confirmed with diagnostic ultrasound showing tendon thickening, hypoechoic changes, and increased vascularity on Doppler imaging.
When to See a Podiatrist
Any foot pain that worsens over several weeks of training, causes mid-activity stoppage, or is associated with localized bone tenderness deserves prompt evaluation. Attempting to run through a stress fracture risks complete fracture, which dramatically extends recovery. Early diagnosis through clinical examination and appropriate imaging at Balance Foot & Ankle in Howell or Bloomfield Township allows targeted treatment and the fastest return to activity.
Foot or Ankle Pain? We Can Help.
Balance Foot & Ankle — Howell & Bloomfield Township, MI
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Stress Fracture or Tendinitis? Get the Right Diagnosis
Stress fractures and tendinitis cause similar symptoms but require very different treatments. Dr. Tom Biernacki uses in-office ultrasound and advanced imaging to accurately distinguish between these conditions and get your recovery started right.
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Clinical References
- Fredericson M, et al. Stress fractures in athletes. Topics in Magnetic Resonance Imaging. 2006;17(5):309-325.
- Maffulli N, et al. Types and epidemiology of tendinopathy. Clinics in Sports Medicine. 2003;22(4):675-692.
- Tenforde AS, et al. Overuse injuries in high school runners: lifetime prevalence and prevention strategies. PM&R. 2011;3(2):125-131.
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Howell Office
3980 E Grand River Ave, Suite 140
Howell, MI 48843
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Bloomfield Hills Office
43700 Woodward Ave, Suite 207
Bloomfield Hills, MI 48302
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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.
- Diagnosis and Treatment of Plantar Fasciitis (PubMed / AAFP)
- Heel Pain (APMA)
- Hallux Valgus (Bunions): Evaluation and Management (PubMed)
- Bunions (Mayo Clinic)
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