Lapidus Bunionectomy: Fusion-Based Bunion Correction for Hypermobile Joints

What Is the Lapidus Bunionectomy?

The Lapidus bunionectomy (formally, first tarsometatarsal arthrodesis) is a surgical procedure that corrects bunion deformity by fusing the joint at the base of the first metatarsal — the first tarsometatarsal (TMT) joint. Named after podiatric surgeon Paul Lapidus who described it in the 1930s, this procedure addresses bunion deformity at its structural root rather than simply realigning bones further up the foot.

While many bunion corrections cut and reposition the first metatarsal shaft (osteotomies like the Austin/chevron procedure), the Lapidus corrects excessive metatarsal spread and hypermobility at the TMT joint itself — making it particularly appropriate for certain bunion patterns that have a higher recurrence risk with osteotomy alone.

When Is the Lapidus Procedure Indicated?

The Lapidus is specifically indicated for:

• Bunions with first TMT joint hypermobility (excessive “looseness” at this joint contributing to the deformity)
• Moderate to severe bunion deformity with high intermetatarsal angle (the angle between the first and second metatarsals)
• Recurrent bunion after previous osteotomy correction
• Bunion deformity in the setting of flatfoot, where the entire medial column needs stabilization
• Adolescent bunions with open physes, where joint-preserving correction is preferred

How the Surgery Is Performed

The Lapidus is performed under general or regional anesthesia. An incision is made over the dorsal (top) aspect of the first TMT joint. The articular cartilage is removed from both joint surfaces, and the joint is repositioned to correct the intermetatarsal angle and any rotational deformity of the first metatarsal. Fixation is achieved with a combination of plates, screws, or staples — modern plating systems provide rigid fixation that has improved recovery significantly compared to older techniques.

The great toe joint (first MTP) is simultaneously addressed if needed — osteotomy of the first metatarsal head, soft tissue release, and adductor tenotomy complete the correction distally.

Modern Lapidus vs. Traditional Lapidus

Traditional Lapidus required 6–8 weeks of non-weight-bearing — a significant limitation compared to osteotomy-based corrections. Modern low-profile locking plate systems (e.g., the Arthrex Lapidus plating system, Exactech, and others) provide sufficient rigidity to allow early protected weight-bearing in a surgical boot within 2 weeks in many patients.

This has significantly increased surgeon and patient acceptance of the Lapidus procedure, as the historical recovery burden was a major deterrent.

Recovery Timeline

• Days 0–14: Elevation and non-weight-bearing or heel-touch weight-bearing in a surgical boot
• Weeks 2–8: Gradual progression to full weight-bearing in boot as fusion progresses radiographically
• Weeks 8–12: Transition to stiff-soled shoe; X-ray confirmation of fusion is required
• Months 3–6: Return to normal shoes; physical therapy for strength and balance
• Month 6–12: Return to athletic activities; fusion typically complete by 6 months

Outcomes

The Lapidus procedure achieves excellent cosmetic and functional results with a lower recurrence rate than osteotomy-based corrections for hypermobile deformity. Fusion rates exceed 95% with modern fixation. Patient satisfaction is high — studies consistently report 85–95% good to excellent outcomes at 2–5 year follow-up.

The main trade-off is motion loss at the first TMT joint, though this joint contributes only a small arc of motion during normal gait and its loss is typically unnoticed functionally. Patients who were told a Lapidus would prevent them from ever wearing heels again are generally pleasantly surprised — many women return to modest heel heights after full recovery.

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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.