Bunion Surgery:
Lapiplasty® 3D Bunion Correction & Minimally Invasive Bunionectomy
The most advanced bunion correction procedures available — including the revolutionary Lapiplasty® 3D Bunion Correction — performed by board-certified foot and ankle surgeons across four Bay Area and Monterey locations.
A bunion is not just a cosmetic bump — it is a progressive, three-dimensional deformity of the foot caused by an unstable joint that has rotated out of its correct position. Left untreated, bunions worsen over time, causing increasing pain, difficulty with footwear, and secondary deformities including hammertoes and arthritis. Today’s surgical options — including the revolutionary Lapiplasty® 3D Bunion Correction and minimally invasive techniques — allow most patients to walk within days and return to normal shoes in weeks.
What Is a Bunion? Understanding the Root Cause
A bunion — medically termed hallux valgus — is far more than the bump you see on the inner side of your foot at the base of the big toe. That visible bump is a symptom, not the cause. The actual root of the problem lies in the middle of the foot, at the tarsometatarsal (TMT) joint — an unstable joint that has allowed the first metatarsal bone to drift outward and rotate, causing the characteristic deformity that progressively worsens over years and decades.
This distinction has transformed modern bunion surgery. Traditional procedures that simply “shave the bump” address only the visible manifestation while leaving the underlying unstable joint untreated — which is why traditional bunionectomies have historically had high recurrence rates. The most durable corrections address the deformity in all three dimensions and stabilize the unstable joint that caused it.
As lapiplasty.com describes it: “Bunions are complex, 3D deformities caused by an unstable joint in the middle of the foot that allows your bone to drift out of alignment.” The bump at the base of the big toe is the end result of this drift — not the problem itself.
Symptoms of a Bunion
What Causes a Bunion?
One of the most persistent misconceptions is that bunions are caused by high heels or tight shoes. In fact, shoes do not cause bunions — they aggravate them. Bunions are caused by an inherited tendency toward mechanical instability in the foot structure. As lapiplasty.com notes, “bunions actually tend to come from hereditary defects in the foot, resulting in a weak mechanical structure.” Imbalances in foot anatomy, combined with the repetitive forces of a lifetime of walking, allow the metatarsal bone to gradually drift and rotate out of alignment.
Bunion Severity: Mild, Moderate, and Severe
| Severity | Intermetatarsal Angle | Clinical Features | Typical Treatment |
|---|---|---|---|
| Mild | <13° | Small bump, minimal toe deviation, occasional discomfort | Conservative care; surgical planning for progression |
| Moderate | 13°–20° | Visible deformity, consistent pain, shoe fitting difficulty | Surgery — Lapiplasty or MIS bunionectomy |
| Severe | >20° | Significant toe overlap, constant pain, functional limitation | Surgery required — Lapiplasty or fusion procedure |
Conservative measures — orthotics, toe spacers, bunion pads, and supportive footwear — can reduce pain and slow progression, but they cannot reverse the deformity or correct the underlying joint instability. Over time, an untreated bunion will worsen, and secondary problems including hammertoes, metatarsalgia, and arthritis will develop. Early surgical consultation results in simpler surgery, shorter recovery, and more durable outcomes.
Conservative Treatment Before Surgery
Not every patient with a bunion requires immediate surgery. Conservative treatment is appropriate for mild symptoms or patients who prefer to delay surgery — but it is critical to understand that conservative care manages symptoms without correcting the underlying deformity. The bunion will continue to progress.
Surgical evaluation is recommended when bunion pain interferes with daily activities, when you can no longer fit comfortably into appropriate footwear, when the deformity is progressing despite conservative measures, or when secondary deformities are developing. You do not need to be in constant pain — functional limitation and progressive deformity are sufficient indications for surgical consultation.
Lapiplasty® 3D Bunion Correction: The Future of Bunion Surgery
Correcting the Bunion in All Three Dimensions
Lapiplasty® is a patented, advanced surgical system developed by Treace Medical Concepts that fundamentally changes how bunions are corrected. While traditional bunionectomies address only the visible bump on the surface of the foot, Lapiplasty® corrects the entire three-dimensional deformity — rotating the metatarsal bone back to its anatomically correct position in all three planes — and then securing the unstable TMT joint with patented titanium plates that prevent recurrence at the source.
The result is a correction that is more anatomically complete, more mechanically stable, and associated with faster return to weight-bearing than traditional approaches — allowing most patients to walk in a protected boot within just 3 to 10 days of surgery, compared to the 6 to 8 weeks of non-weight-bearing typically required after traditional bunion procedures.
The 3D Problem — Why Traditional Surgery Falls Short
Traditional bunion surgery corrects the bunion primarily in one or two planes — shifting the metatarsal head medially but leaving the rotational component uncorrected and, critically, leaving the unstable TMT joint untreated. Because the underlying mechanical problem remains, the bunion frequently recurs — sometimes within a few years of the original surgery.
Lapiplasty addresses each of the three dimensional components of the deformity with precision instruments and proprietary instrumentation that guides the surgeon to correct all three planes simultaneously before locking the corrected position with titanium fixation.
How Lapiplasty Corrects All Three Dimensions
After correcting all three dimensions, the Lapiplasty system secures the repositioned bone at the TMT joint using patented titanium fixation plates specifically designed for this application. This rigid stabilization of the previously unstable joint is what allows earlier weight-bearing and produces the dramatically lower recurrence rates seen in Lapiplasty clinical studies.
Who Is a Candidate for Lapiplasty®?
Timeline Expectations & Milestones
“The difference between my first bunion surgery and the Lapiplasty® Procedure was like night and day.” — Judy, Lapiplasty® Patient
“My foot looks amazing; you wouldn’t believe it was the same foot.” — Wanda, Lapiplasty® Patient
“I was most surprised that I was able to walk so soon and put pressure on my foot again without much pain.” — Tom, Lapiplasty® Patient
Read more patient stories at lapiplasty.com/patient-stories
Minimally Invasive Bunionectomy (MIS Bunion Surgery)
Minimally invasive bunion surgery — also called percutaneous bunionectomy or MIS bunionectomy — achieves bunion correction through very small incisions (typically 3 to 5 millimeters) using specialized instruments guided by fluoroscopic (real-time X-ray) guidance, without the extensive soft tissue dissection required by traditional open procedures. This approach reduces trauma to the surrounding soft tissue, resulting in less swelling, less post-operative pain, minimal scarring, and often a faster return to comfortable footwear.
Advantages of Minimally Invasive Bunion Surgery
| Feature | Minimally Invasive (MIS) | Traditional Open Bunionectomy |
|---|---|---|
| Incision size | 3–5mm percutaneous portals | 3–6cm open incision |
| Soft tissue damage | Minimal — structures preserved | Significant dissection required |
| Post-op swelling | Substantially reduced | Significant, prolonged |
| Post-op pain | Typically less severe | More pronounced |
| Scarring | Minimal, nearly invisible | Visible linear scar |
| Return to shoes | Often faster | Longer timeline typical |
| Best for | Mild to moderate bunions; cosmesis priority | All severities; complex deformity |
Types of Minimally Invasive Bunion Procedures
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1Percutaneous Distal Metatarsal Osteotomy (PDMO) A small cut is made at the head of the first metatarsal through a 3mm incision, allowing the bone head to be shifted laterally to reduce the intermetatarsal angle. Fixation with percutaneous screws maintains the correction during healing. Best for mild-to-moderate bunions without significant rotational deformity.
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2Minimally Invasive Chevron-Akin (MICA) Procedure Combines a minimally invasive Chevron cut at the metatarsal head with an Akin osteotomy of the proximal phalanx to correct both the intermetatarsal angle and the hallux valgus interphalangeus component. Fixation with headless compression screws provides stable results through tiny incisions.
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3Lapiplasty® Mini-Incision™ Procedure Treace Medical Concepts has developed a minimally invasive adaptation of the Lapiplasty technique — the Mini-Incision™ Procedure — that delivers the 3D correction and joint stabilization of Lapiplasty through smaller incisions. This combines the biological advantages of minimally invasive surgery with the mechanical superiority of full 3D correction and TMT joint fixation.
MIS techniques are most predictable for mild-to-moderate bunions without significant rotational deformity or joint instability. Severe deformities, hypermobile first rays, and bunions associated with significant arthritis may be better served by Lapiplasty or procedures that directly address the unstable TMT joint. Your surgeon will review your weight-bearing X-rays and determine which approach offers the best correction for your specific anatomy.
Choosing the Right Bunion Procedure
The best bunion surgery is the one that most precisely addresses your specific deformity, corrects all contributing factors, and matches your lifestyle and recovery expectations. Our surgeons perform a thorough evaluation — including bilateral weight-bearing X-rays, measurement of all relevant angles, assessment of TMT joint mobility, and evaluation of associated deformities — before recommending a specific approach.
| Procedure | Best For | Key Advantage | Return to Shoes |
|---|---|---|---|
| Lapiplasty® 3D Bunion Correction | Mild, moderate, severe; recurrent bunions; hypermobile first ray | Corrects all 3D planes; stabilizes unstable joint; lowest recurrence | 6–8 weeks |
| MIS / Percutaneous Bunionectomy | Mild to moderate; patients prioritizing minimal scarring | Minimal soft tissue disruption; less swelling; faster cosmetic recovery | 6–8 weeks |
| Traditional Open Osteotomy | All severities; complex anatomy; revision surgery | Widely proven; adaptable to complex deformity patterns | 8–12 weeks |
| First TMT Joint Fusion (Lapidus) | Severe deformity; high recurrence risk; arthritis with bunion | Maximum stability; eliminates recurrence at TMT joint | 8–12 weeks |
Frequently Asked Questions About Bunion Surgery
Lapiplasty® 3D Bunion Correction is a patented surgical system that corrects the bunion deformity in all three dimensions — medial-lateral, dorsal-plantar, and rotational — and then secures the unstable TMT joint at the root cause of the deformity with titanium fixation plates. Traditional bunionectomies shave or shift the bump in one or two planes but leave the underlying unstable joint untreated, which is why recurrence rates with traditional surgery are significantly higher. Lapiplasty’s 3D correction and joint stabilization produce a more complete correction, lower recurrence rates, and allow earlier weight-bearing due to the rigid fixation construct — most patients walk in a boot within 3 to 10 days of surgery.
Recovery varies by procedure. Lapiplasty patients typically begin walking in a protective boot within 3 to 10 days, transition to comfortable shoes at 6 to 8 weeks, and return to full activities including sports at 4 to 6 months. Minimally invasive bunionectomy follows a similar timeline with typically less post-operative swelling. Traditional open procedures typically require 6 to 8 weeks of protected weight-bearing before shoe transition. Physical therapy is incorporated beginning around week 4 to restore strength, range of motion, and normal gait mechanics.
Yes — returning to normal footwear is one of the primary goals of bunion surgery. Most patients can wear their preferred shoes after full recovery, including shoes they were unable to fit into due to the bunion. Lapiplasty surgeons report that patients can typically return to essentially any shoe they were comfortable in before the bunion became problematic, including dress shoes and, after full healing, heels. Your surgeon will guide you on the timeline for specific footwear styles based on your healing progress at post-operative visits.
Bunion recurrence is the most significant long-term concern with any bunion procedure. Traditional osteotomies that do not address the underlying TMT joint instability have historically reported recurrence rates of 15 to 40 percent over 10 years. Lapiplasty, by directly stabilizing the unstable TMT joint at the root cause of the deformity, shows substantially lower recurrence — with clinical data demonstrating 99 percent of patients maintaining their 3D correction at 13 months. Wearing supportive footwear and custom orthotics after surgery further reduces recurrence risk.
Bunion surgery is performed under regional anesthesia — a nerve block that numbs the foot and lower leg for 12 to 18 hours post-operatively. Most patients are comfortable during and immediately after surgery. As the block wears off, oral pain medication manages discomfort effectively. Most patients report that post-operative pain is more manageable than anticipated. Minimally invasive techniques typically produce less post-operative pain due to reduced soft tissue trauma.
Most PPO insurance plans cover bunion surgery when medically necessary — defined as a bunion causing pain and functional limitation that has not resolved with conservative treatment. Documentation of pain, functional impairment, and prior conservative treatment attempts is required. Our billing team verifies your specific coverage before your surgical consultation and manages prior authorization.
Bilateral simultaneous bunion surgery is generally not recommended because it requires complete non-weight-bearing on both feet simultaneously — which is not practical for most patients. The standard approach is to operate on the more symptomatic foot first, allow full recovery, and then address the second foot. The Lapiplasty system’s early weight-bearing protocol makes staging the two feet more manageable, as the first foot is often significantly recovered before the second surgery occurs.
Medical Disclaimer: The information in this article is for general educational purposes only and does not constitute individualized medical advice. Lapiplasty® and Lapiplasty® 3D Bunion Correction® are registered trademarks of Treace Medical Concepts, Inc. Before and after images are from lapiplasty.com and used for educational reference with attribution. Patient quotes are sourced from lapiplasty.com/patient-stories. Individual surgical results vary. As with any surgical procedure, there are risks — consult a board-certified foot and ankle surgeon to determine which bunion procedure is appropriate for your specific condition.
Corrective Bunion Taping
Post Op Lapiplasty Taping
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