Minimally Invasive Foot Surgery: MIS Bunion Correction and Percutaneous Hammertoe Techniques

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Township, MI. Last updated April 2026.

Minimally invasive foot surgery (MIS) — performing osseous correction through small stab incisions using burrs, wire-guided osteotomies, and percutaneous fixation techniques — has undergone a renaissance in the past decade with the development of standardized techniques, dedicated instrumentation, and fluoroscopic guidance. Contemporary MIS bunion and hammertoe correction produces outcomes equivalent to open techniques with significantly reduced soft tissue trauma, post-operative swelling, and recovery time for selected patients.

MIS Bunion Correction (MICA Technique)

The MICA (Minimally Invasive Chevron Akin) technique — the current gold standard MIS bunion procedure — performs a percutaneous first metatarsal chevron osteotomy and Akin (proximal phalanx) osteotomy through two 3–5mm stab incisions, using a dedicated Shannon burr under continuous fluoroscopic guidance. The osteotomy cuts are stabilized with 2–3 headless compression screws placed percutaneously. MICA produces correction equivalent to the open chevron procedure for mild-to-moderate bunion deformity (IMA <16 degrees) with: less post-operative swelling, earlier return to normal footwear (typically 4–6 weeks vs. 6–8 weeks for open surgery), and equivalent radiographic correction at 1 year. The procedure is performed in ambulatory surgery or in-office OR settings under ankle block anesthesia with sedation.

Percutaneous Hammertoe Correction

Percutaneous flexor tenotomy — transecting the flexor digitorum longus tendon through a 2mm stab incision at the plantar PIP joint crease — corrects flexible hammertoe deformity without open surgical exposure. The procedure takes less than 5 minutes per toe under digital block anesthesia and allows immediate weight-bearing in a surgical sandal. Percutaneous PIP arthroplasty using a small burr removes the proximal phalangeal head for rigid hammertoe correction through a 3mm dorsal stab incision, avoiding the plantar scar and prolonged recovery of the open approach. Dr. Biernacki at Balance Foot & Ankle offers MIS bunion correction and percutaneous hammertoe techniques as appropriate for patient anatomy and deformity severity. Call (810) 206-1402 at our Bloomfield Township or Howell office to discuss whether MIS techniques are appropriate for your condition.

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In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your bunion pain, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Township offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Frequently Asked Questions

Can bunions be corrected without surgery?

Bunion correctors and orthotics cannot reverse a bunion, but they can significantly reduce pain, slow progression, and improve function. Surgery is the only way to permanently correct the deformity — but conservative care often manages symptoms effectively for years.

How long does bunion surgery recovery take?

Recovery varies by procedure. Most patients are in a surgical boot for 4–6 weeks, return to regular shoes at 8–12 weeks, and are fully recovered with normal footwear at 3–6 months. Minimally invasive techniques often have faster recovery.

Do bunions come back after surgery?

Recurrence rates are low with modern surgical techniques (5–10%). Risk is reduced by wearing appropriate footwear after surgery and using custom orthotics to correct the underlying biomechanics that caused the bunion.

Need Treatment at Balance Foot & Ankle?

Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin see patients at our Howell and Bloomfield Township offices.

Book Online or call (810) 206-1402

Differential Diagnosis: What Else Could It Be?

Several conditions share symptoms with Bunion (Hallux Valgus) and are commonly misdiagnosed in the first office visit. Considering these alternatives is part of every Balance Foot & Ankle exam:

• Hallux rigidus. Stiff big-toe joint without lateral deviation — pain with dorsiflexion, not bumping.
• Gout flare. Sudden warm/red MTP joint, often overnight — needs uric-acid workup.
• Sesamoiditis. Pain under the big-toe joint rather than at the side, worse with push-off.

If your symptoms don’t fit the textbook pattern, ask your podiatrist which differentials they ruled out — that conversation often shortcuts months of trial-and-error treatment.

Most Common Mistake We See

The most common mistake we see is: Expecting splints or toe spacers to reverse the bony deformity. Fix: splints slow progression and reduce pain, but only surgical correction realigns the first metatarsal.

Warning Signs That Need Same-Day Care

Frequently Asked Questions

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.

What is Bunion?

Bunion is a common foot/ankle condition that affects mobility and quality of life. Understanding the underlying cause is the first step in successful treatment. Our podiatrists at Balance Foot & Ankle perform a hands-on biomechanical exam, review your activity history, and use diagnostic imaging when appropriate to identify the root cause—not just treat the symptom. Many patients have been told to “rest and ice” without a deeper diagnostic workup; our approach is different.

Symptoms and warning signs

Common signs of bunion include pain that worsens with activity, morning stiffness, swelling, tenderness when palpated, and difficulty bearing weight. If you experience sudden severe pain, inability to walk, visible deformity, numbness or color change, contact our office the same day or visit urgent care—these can signal a more serious injury such as a fracture, tendon rupture, or vascular compromise. Diabetics with any foot wound should seek same-day care.

Conservative treatment options

Most cases of bunion respond to non-surgical care: structured rest, supportive footwear changes, custom orthotics, targeted stretching and strengthening protocols, anti-inflammatory medications when medically appropriate, and in-office procedures such as ultrasound-guided injections. We also offer advanced therapies including MLS laser therapy, EPAT/shockwave, regenerative injections, and image-guided procedures. Treatment is sequenced from least invasive to most invasive, and we explain the rationale at every step.

When is surgery considered?

Surgery is reserved for cases that fail 3-6 months of well-structured conservative care, when there is structural pathology (severe deformity, complete tear, advanced arthritis), or when imaging shows damage that will not heal without intervention. Our surgeons have performed 3,000+ foot and ankle procedures and prioritize minimally-invasive techniques whenever appropriate. We discuss recovery timelines, return-to-activity milestones, and realistic outcome expectations before any procedure is scheduled.

Recovery timeline and prevention

Recovery from bunion varies based on severity and chosen treatment path. Conservative cases often improve within 4-8 weeks with consistent adherence to the protocol. Post-procedural recovery may range from a few days (in-office procedures) to several months (reconstructive surgery). Long-term prevention involves footwear assessment, activity modification, structured strengthening, and regular check-ins with your podiatrist if you have a history of recurrence. We provide written home-exercise plans and digital follow-up support.

Related Care at Balance Foot & Ankle

Clinical bunion services at our Howell and Bloomfield Township offices.

Bunion SurgeryHammertoe CorrectionCustom Orthotics

More questions patients ask

What is a bunion?

A bunion (hallux valgus) is a progressive bony deformity where the big toe joint shifts outward, creating a visible bump. It results from an unstable metatarsal bone, not simply tight shoes. Bunions affect approximately 23% of adults and can cause significant pain, difficulty wearing shoes, and secondary problems like hammertoes. Dr. Biernacki specializes in both conservative management and advanced surgical correction including Lapiplasty 3D bunion correction.

What is Lapiplasty bunion surgery?

Lapiplasty is an advanced 3D bunion correction procedure that addresses the root cause of bunions by correcting the unstable metatarsal bone in all three dimensions. Unlike traditional bunionectomy, Lapiplasty patients can bear weight within days and has a recurrence rate under 3% compared to 12-15% for traditional procedures. Dr. Biernacki is a fellowship-trained Lapiplasty surgeon serving SE Michigan.

Still have a question about coverage or cost? Book online and we will check your benefits before your visit: Book in Howell · Book in Bloomfield Township. Prefer to talk it through first? Call (810) 206-1402.