You are in the right place. Dr. Tom Biernacki, DPM, FACFAS — board-certified foot & ankle surgeon with 3,000+ surgeries — explains exactly what foot tendinitis means and what actually works. Call (810) 206-1402 for a same-day appointment at our Howell or Bloomfield Hills office.
Quick answer: Foot Tendinitis affects roughly 1 in 4 adults in our practice. Effective treatment starts with a targeted diagnosis, conservative-first treatment, and escalation only when needed. We treat this regularly at our Howell and Bloomfield Hills practices. Call (810) 206-1402.
The most important clinical decision with Foot Tendinitis isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
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Medically reviewed by Dr. Tom Biernacki, DPM · Board-Certified Podiatric Surgeon · Last reviewed: April 2026 · Editorial Policy
Related Conditions
Quick Answer
Foot Tendinitis: Types, Causes, and How to Treat Each One relates to foot pain — typically caused by overuse, footwear, or biomechanics. Most patients improve in 6-12 weeks with conservative care. Same-week appointments in Howell + Bloomfield Hills: (810) 206-1402.
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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What Is Foot Tendinitis?
Tendinitis (also spelled tendonitis) refers to inflammation within a tendon, causing pain, swelling, and reduced function. In the foot and ankle, tendinitis affects several distinct tendons, each with different locations, causes, and treatments. The term “tendinitis” has largely been replaced in clinical literature by “tendinopathy”—a broader term acknowledging that chronic tendon pain often involves degenerative tendon changes (tendinosis) rather than acute inflammation—but the conditions are often used interchangeably in patient-facing discussions. Accurate identification of which tendon is affected is the first step in appropriate treatment, as each tendon’s location, function, and treatment approach differ.
Achilles Tendinitis
Achilles tendinitis is the most common tendon problem in the foot and ankle, affecting the tendon connecting the calf muscle to the heel bone. It most commonly presents as pain and stiffness at the back of the heel—either at the tendon insertion (insertional Achilles tendinopathy) or in the mid-portion of the tendon 2–6 cm above the heel (non-insertional tendinopathy). Both types are worsened by activity and morning stiffness. Causes include training volume increases in runners, tight calf muscles, poor footwear, and high-heeled shoes that shorten the calf-Achilles complex over time. Treatment: eccentric calf strengthening exercises (the most evidence-based treatment), calf stretching, heel lift inserts to reduce tendon strain, and physical therapy. Corticosteroid injection into the tendon itself is contraindicated (risk of tendon rupture)—injection around the tendon is more appropriate for refractory cases.
Posterior Tibial Tendinitis
The posterior tibial tendon runs behind the inner ankle and attaches to the navicular bone on the inner midfoot—it is the primary dynamic support of the medial arch. Posterior tibial tendinitis produces pain and swelling behind the medial malleolus (inner ankle) and along the inner midfoot. As it progresses, the arch begins to collapse—adult-acquired flatfoot (posterior tibial tendon dysfunction, PTTD) is the clinical syndrome of posterior tibial tendinopathy leading to progressive flatfoot deformity. Causes include overuse in runners, obesity, and flat foot predisposition. Treatment: ankle and arch supportive bracing (Arizona brace or CAM boot for acute cases), custom orthotics with aggressive medial arch support, and physical therapy. Early-stage PTTD responds well to conservative care; advanced stages (flexible or rigid flatfoot collapse) may require reconstructive surgery.
Extensor Tendinitis
The extensor tendons run along the top of the foot and lift the toes. Extensor tendinitis produces pain and swelling across the top of the foot, typically worsened by tight shoes or high lacing pressure. It is commonly caused by footwear with excessive top-of-foot compression (tight lacing, low shoe volume over the foot dorsum) or overuse in runners on hilly terrain (increased dorsiflexion demand). Treatment: loosening shoe lacing (especially over the midfoot), using tongue pads to reduce shoe pressure on the tendons, relative rest, and ice. Extensor tendinitis typically resolves within 2–4 weeks with appropriate footwear modification.
Peroneal Tendinitis
The peroneal tendons run behind the outer ankle and support the lateral foot. Peroneal tendinitis produces pain and tenderness posterior to the lateral malleolus (outer ankle bone), worsened by activities requiring ankle inversion resistance (running on banked surfaces, trail running, jumping). It is common in athletes with chronic ankle instability or high-arched feet and is often misdiagnosed as a persistent ankle sprain. Treatment: relative rest, anti-inflammatory measures, ankle bracing to reduce inversion stress, and peroneal eccentric strengthening exercises. Persistent peroneal tendinitis warrants MRI evaluation to assess for associated tendon tears.
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When to See a Podiatrist
If foot or ankle pain has been bothering you for more than a few weeks, home care alone may not be enough. Balance Foot & Ankle offers same-week appointments at our Howell and Bloomfield Hills clinics — no referral needed in most cases. Bring your current shoes and a short list of symptoms and we’ll build you a treatment plan in one visit.
Call Balance Foot & Ankle: (810) 206-1402 · Book online · Offices in Howell & Bloomfield Hills
Frequently Asked Questions
How long does foot tendinitis take to heal?
Recovery time varies significantly by which tendon is affected, how long the condition has been present, and how consistently treatment is followed. Mild Achilles tendinitis in a runner who modifies training and begins eccentric exercises may improve significantly within 4–6 weeks. Established Achilles tendinopathy may take 3–6 months of structured eccentric exercise to fully resolve. Posterior tibial tendinopathy at early stages (no arch collapse) responds in 6–12 weeks of bracing and orthotics; more advanced PTTD takes longer. Extensor tendinitis typically resolves in 2–4 weeks with footwear modification. Peroneal tendinitis varies by severity—mild cases resolve in 4–8 weeks; cases with associated tendon tears may require months. Continuing to push through tendon pain without treatment modification consistently prolongs recovery—the most important factor in tendinitis recovery is addressing the underlying mechanical cause.
Should I stretch a tendinitis injury?
Stretching is appropriate and beneficial for most foot tendinitis, but the approach should be specific to the tendon and stage of injury. For Achilles tendinopathy, calf stretching (gastrocnemius and soleus) is a standard component of treatment—but aggressive, forceful stretching of an acutely inflamed tendon can worsen pain and should be gentle initially. Eccentric calf exercises (Alfredson protocol) are more effective than simple stretching for Achilles tendinopathy. For posterior tibial tendinopathy, calf and Achilles stretching helps because calf tightness increases load on the arch and posterior tibial tendon. Avoid aggressive forced stretching of any acutely inflamed tendon—start with gentle range-of-motion and progress to stretching and strengthening as acute pain subsides. A physical therapist can guide an appropriate progression.
Do I need an MRI for foot tendinitis?
MRI is not required for initial diagnosis of straightforward foot tendinitis and is not indicated as a first-line evaluation. Most foot tendinitis diagnoses are made clinically—based on the location of pain, tenderness, functional testing, and activity history. MRI becomes indicated when: symptoms are not improving as expected with appropriate conservative treatment (6–8 weeks), the presentation is unusual or there is concern for tendon rupture or significant tear, there is uncertainty about the diagnosis, or surgical intervention is being planned and detailed anatomy is needed. Ultrasound is an alternative imaging modality for tendon assessment that is less expensive, real-time dynamic, and excellent for assessing tendon thickness, tears, and paratenon fluid.
Medical References & Sources
- PubMed Research — Eccentric Exercise for Achilles Tendinopathy
- PubMed Research — Posterior Tibial Tendon Dysfunction Treatment
- American Orthopaedic Foot & Ankle Society — Tendinitis
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Dr. Tom Biernacki, DPM is a board-certified podiatric surgeon at Balance Foot & Ankle in Howell and Bloomfield Hills, Michigan. He diagnoses and treats all forms of foot and ankle tendinitis and tendinopathy, from Achilles and posterior tibial to peroneal and extensor tendon conditions.
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Subscribe on YouTube →Recommended Products for Achilles Tendonitis
- Strassburg Sock Night Splint — Overnight Achilles Stretch
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- Percussion Massager — Calf & Achilles Recovery
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Our board-certified podiatrists treat this condition at two convenient locations. Same-day appointments often available.
Medically Reviewed by: Dr. Tom Biernacki, DPM — Board-Certified Podiatrist, Balance Foot & Ankle Specialists
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4330 E Grand River Ave
Howell, MI 48843
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43494 Woodward Ave, #208
Bloomfield Hills, MI 48302
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Considerations
- ✗ Self-treatment can mask issues
- ✗ See a podiatrist if pain >2 weeks
Dr. Tom’s Recommended Products for foot care
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Footnanny Heel Cream Dr. Tom’s Pick
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About Your Care Team at Balance Foot & Ankle
Dr. Tom Biernacki, DPM · Board-Certified Foot & Ankle Surgeon. Specializes in conservative-first care, minimally invasive bunion surgery, and complex reconstruction.
Dr. Carl Jay, DPM · Accepting new patients. Specializes in sports medicine, athletic injuries, and routine podiatric care.
Dr. Daria Gutkin, DPM, AACFAS · Accepting new patients. Specializes in surgical reconstruction and pediatric podiatry.
Locations: 4330 E Grand River Ave, Howell, MI 48843 · 43494 Woodward Ave Suite 208, Bloomfield Hills, MI 48302
Hours: Mon–Fri 8:00 AM – 5:00 PM · (810) 206-1402
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Dr. Tom Biernacki, DPM is a board-certified podiatrist + Amazon Associate. Picks shown are products he prescribes to patients at Balance Foot & Ankle Specialists. We earn a commission on qualifying purchases at no extra cost to you. All products independently tested + reviewed for 30+ days minimum. Last verified: April 28, 2026.
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In-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your foot tendinitis, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
Same-day appointments available. (810) 206-1402
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When should I see a podiatrist?
See a podiatrist if: foot or ankle pain has lasted more than 2–4 weeks without improvement, you’re changing your gait to avoid pain, you have an open wound or sore that isn’t healing, you notice nail discoloration or thickening, you have diabetes and any foot concern, or pain is severe enough to wake you at night. Most foot conditions are easier and cheaper to treat early — what starts as a minor issue can become a surgical problem with months of delay.
What is the difference between a podiatrist and an orthopedic surgeon?
Podiatrists (DPM — Doctor of Podiatric Medicine) specialize exclusively in the foot, ankle, and lower leg. Orthopedic surgeons (MD/DO) have broader musculoskeletal training but variable foot/ankle subspecialization. For foot and ankle-specific problems, a podiatrist often has more focused training and experience. For injuries involving the leg above the ankle, complex pediatric cases, or multi-level reconstruction, orthopedic consultation may be appropriate. We frequently co-manage patients with orthopedic colleagues.
How do I know if my foot pain is serious?
Signs that warrant same-day or next-day evaluation: severe pain that appeared suddenly without clear cause, swelling, redness, and warmth that appeared suddenly (possible gout, infection, or Charcot fracture), an open wound that looks infected (redness spreading, pus, warmth), inability to bear weight, or any foot problem in a diabetic patient. Pain that’s been present for weeks and is stable is important but not an emergency — schedule within 1–2 weeks.
Can foot problems cause back and knee pain?
Yes — this is a kinetic chain effect. Abnormal foot mechanics (overpronation, supination, leg length discrepancy) cause compensatory changes in knee, hip, and lumbar alignment. Roughly 30% of patients presenting to our clinic with knee pain have a treatable foot-level biomechanical cause. Correcting foot mechanics with orthotics or appropriate footwear often provides significant knee and back relief. If you have chronic knee or back pain and haven’t had your foot mechanics evaluated, it’s worth a consult.
Are orthotics worth it?
For the right conditions, yes — custom orthotics are among the most cost-effective interventions in podiatry. They’re most effective for: plantar fasciitis, flat feet with secondary knee/back pain, leg length discrepancy, metatarsalgia, posterior tibial tendon dysfunction, and diabetic foot pressure management. Quality OTC orthotics ($35–60) resolve symptoms for 60% of patients with mild-to-moderate conditions. Custom orthotics are appropriate when OTC options have failed or when the biomechanical problem is complex. We cast custom orthotics in-office.
How do I choose the right running shoes?
Start with your foot type (flat, neutral, high arch) and running pattern (overpronator, neutral, supinator). Flat feet and overpronators do best in stability or motion-control shoes. Neutral feet do well in neutral-cushioned shoes. High arches need maximum cushioning with flexible soles. Always buy running shoes at the end of the day (foot swelling peaks then), get properly fitted by a specialist, and replace every 300–500 miles. If you’ve been injured repeatedly, a gait analysis can identify the mechanical flaw driving your injury pattern.
What is the difference between a sprain and a fracture?
A sprain is a ligament injury (the tissue connecting bones); a fracture is a break in the bone itself. Both can occur with the same trauma (ankle roll, fall). The old test — ‘if you can walk, it’s not broken’ — is wrong; many fractures are initially weight-bearable. Key differences: a fracture typically produces localized bone tenderness along the bone itself, while a sprain is tender over the ligament. X-ray is the standard to differentiate. High-grade sprains without proper treatment can be as disabling as fractures.
How do I prevent foot and ankle injuries?
The four most impactful prevention strategies: (1) Supportive, appropriately fitted footwear for your foot type and activity. (2) Gradual activity progression — the 10% rule (never increase weekly mileage or intensity by more than 10%). (3) Regular calf and ankle mobility work. (4) Strengthening the posterior tibial tendon, peroneals, and intrinsic foot muscles. Most overuse injuries are preventable; most acute injuries are not — but ankle sprain recurrence (60–70% without rehab) is prevented by balance and proprioception training.
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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.