Minimally invasive bunion surgery (MICA) uses tiny incisions and percutaneous bone cuts — recovery is dramatically faster than traditional bunionectomy with similar long-term outcomes for the right patient.
You’re in the right place. Dr. Tom Biernacki, DPM, FACFAS — board-certified foot & ankle surgeon with 3,000+ surgeries — explains exactly what minimally invasive bunion surgery (MICA) means and what works. Call (810) 206-1402 for same-day appointment at Howell or Bloomfield Hills.
Watch: Top 5 Barefoot Shoes LIES! [Plantar Fasciitis, Bunions & Flat Feet] — MichiganFootDoctors YouTube
Quick Answer
A bunion is a bony prominence at the base of the big toe caused by the first metatarsal shifting outward. It cannot reverse without surgery. It can be managed with wide toe-box shoes, bunion pads, and custom orthotics that slow progression and reduce pain.
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Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.
Medically reviewed by Dr. Tom Biernacki, DPM | Board-certified podiatrist | 3,000+ surgeries performed
Last updated: April 2, 2026
Quick Answer
Minimally invasive chevron and Akin (MICA) bunion surgery corrects bunion deformity through 2-3 small incisions rather than a traditional 3-4 inch open incision. Using specialized instruments and fluoroscopic guidance, surgeons make precise bone cuts and fixate with screws — achieving the same correction as traditional surgery with less tissue trauma, less pain, and faster return to shoes and activities.
What Makes MICA Different from Traditional Bunion Surgery
Traditional open bunion surgery (chevron or scarf osteotomy) requires a 3-4 inch incision over the big toe joint, extensive soft tissue dissection, direct visualization of the bone, and significant periosteal stripping. While effective, this approach creates substantial surgical trauma that contributes to post-operative pain, swelling, and a prolonged recovery period.
MICA uses 2-3 small stab incisions (each approximately 3-5mm) through which specialized burrs and bone-cutting instruments are inserted. The surgeon performs the osteotomies (bone cuts) under live fluoroscopic (X-ray) guidance rather than direct vision. Screws are inserted percutaneously to fixate the corrected position.
The key advantage is tissue preservation: minimal soft tissue dissection, no periosteal stripping, and reduced inflammation. This translates to less post-operative pain, less swelling, faster bone healing, and earlier return to footwear. Studies show MICA patients use 40-50% less pain medication than traditional surgery patients.
Who Is a Good Candidate for MICA?
MICA is effective for mild to moderate bunion deformities (hallux valgus angle up to 40 degrees, intermetatarsal angle up to 18 degrees). Most bunions that were traditionally corrected with chevron or scarf osteotomies can now be addressed with MICA techniques.
Ideal candidates include patients with symptomatic bunions who want faster recovery, those who cannot afford prolonged time off work, active individuals eager to return to exercise, and patients concerned about cosmetic scarring from traditional surgery.
MICA may not be appropriate for very severe bunions requiring extensive soft tissue releases, revision bunion surgery with significant scar tissue, bunions with advanced arthritis of the MTP joint, or patients with poor bone quality (severe osteoporosis) that may not support percutaneous screw fixation. Dr. Tom Biernacki evaluates each patient individually to determine the optimal surgical approach.
The MICA Surgical Procedure Step by Step
The procedure is performed under ankle block anesthesia as an outpatient surgery. A small stab incision is made over the medial first metatarsal. A specialized Shannon burr is inserted and, guided by fluoroscopy, creates a precise chevron osteotomy through the distal first metatarsal.
The metatarsal head is shifted laterally to correct the deformity. Two percutaneous screws are inserted through separate small incisions to fixate the corrected position. If needed, a second osteotomy of the proximal phalanx (Akin osteotomy) corrects any additional hallux valgus deformity with a third screw.
The entire procedure takes approximately 30-45 minutes per foot. The correction is verified under fluoroscopy before closure. The small incisions are closed with single sutures or steri-strips. A compressive dressing is applied and the patient leaves in a post-operative shoe.
Recovery: What to Expect After MICA
Weeks 1-2: Weight-bearing as tolerated in a post-operative rigid-soled shoe from day one. Most patients walk independently on the day of surgery. Ice, elevation, and prescribed pain medication manage discomfort. Most MICA patients report pain levels of 2-4/10 during the first week, compared to 5-7/10 for traditional surgery.
Weeks 2-6: Continue in the post-operative shoe. Sutures removed at 2 weeks. Gentle toe range-of-motion exercises begin. Most patients can drive an automatic transmission by week 3-4 (non-operative foot) or week 4-6 (operative foot). Light desk work can resume at 1-2 weeks.
Weeks 6-10: Transition to wide, supportive shoes with stiff soles. X-rays confirm bone healing progression. Physical therapy may begin for patients with persistent stiffness. Moderate exercise (cycling, swimming) can resume.
Months 3-6: Return to all footwear including moderate heels. Full return to running and high-impact sports. Residual swelling gradually resolves. Final cosmetic result is typically a barely visible 3-5mm scar — dramatically less noticeable than the traditional 3-4 inch scar.
MICA Results: What the Evidence Shows
Published studies comparing MICA to traditional open osteotomy show equivalent correction of the hallux valgus angle and intermetatarsal angle at 1-year follow-up. Radiographic outcomes are statistically equivalent between the two approaches, confirming that MICA achieves the same structural correction.
Where MICA excels is in patient-reported outcomes: less pain in the first 2 weeks, faster return to closed shoes (6 weeks vs 8-12 weeks), faster return to exercise (8 weeks vs 12-16 weeks), better cosmetic satisfaction, and equivalent long-term correction durability.
Complication rates are comparable between MICA and traditional approaches. Unique MICA considerations include a learning curve for the surgeon (fluoroscopy-guided technique requires specialized training), risk of thermal bone injury from power burrs (mitigated by irrigation), and limited ability to address severe soft tissue contractures percutaneously.
Why Choose Balance Foot & Ankle for MICA Surgery
Dr. Tom Biernacki has completed specialized training in MICA and percutaneous bunion correction techniques. Our practice offers the full spectrum of bunion surgery — from MICA for mild-to-moderate deformities to Lapidus fusion for severe bunions — ensuring each patient receives the procedure best suited to their specific deformity and goals.
At Balance Foot & Ankle, we use the latest fluoroscopic equipment for precise intraoperative guidance and specialized instrumentation designed specifically for percutaneous foot surgery. Our outcomes data demonstrates correction and satisfaction rates consistent with published literature, giving patients confidence in their results.
Warning Signs Requiring Urgent Evaluation
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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.
Ready to feel better?
Same-week appointments available in Howell and Bloomfield Hills, Michigan.
Book Your VisitIn-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your bunions, 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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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.
- Plantar Fasciitis: Diagnosis and Conservative Management (PubMed)
- Plantar Fasciitis (APMA)
- Diagnosis and Treatment of Plantar Fasciitis (PubMed / AAFP)
- Heel Pain (APMA)
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