Bunions, medically known as hallux valgus, are among the most common foot deformities, affecting millions worldwide. Characterized by a bony bump at the base of the big toe, bunions result from the misalignment of the first metatarsophalangeal (MTP) joint, causing the big toe to drift toward the second toe. This deformity can lead to pain, swelling, difficulty wearing shoes, and impaired mobility. While conservative treatments such as orthotics, toe spacers, and footwear modifications may alleviate symptoms, they do not correct the underlying structural problem. For patients with mild to moderate bunion deformities, one of the most effective surgical interventions is the Chevron osteotomy.
What Is a Chevron Osteotomy?
The Chevron osteotomy is a type of distal metatarsal osteotomy, meaning it involves cutting and realigning the distal (far) end of the first metatarsal bone—the long bone leading to the big toe. The procedure is named after the V-shaped cut (resembling a chevron) made in the bone. This technique allows the surgeon to shift the metatarsal head laterally, thereby straightening the big toe and correcting the bunion deformity.
This procedure is typically recommended for patients with mild to moderate hallux valgus, where the angle between the first and second metatarsals is not excessively wide. It is favored for its precision, relatively low complication rate, and effectiveness in restoring foot alignment and function.
Surgical Technique
The Chevron osteotomy is usually performed as an outpatient procedure under regional anesthesia, often with sedation. The surgeon begins by making a small incision on the medial (inner) side of the foot, over the bunion. After exposing the metatarsal head, a V-shaped cut is made in the bone. The apex of the V is centered at the metatarsal head, allowing the distal fragment to be shifted laterally—away from the second toe.
Once the bone is repositioned, it is stabilized using small screws or pins. In some cases, additional procedures may be performed to adjust the surrounding soft tissues. These include tightening the joint capsule on the medial side (capsulorrhaphy) and releasing tight structures on the lateral side (lateral release). The bony prominence of the bunion is shaved down to reduce pain and improve cosmetic appearance.
Postoperative Recovery
Recovery from a Chevron osteotomy varies depending on the patient and the surgeon’s protocol. Most patients are allowed to bear weight on the heel immediately after surgery, using a protective surgical shoe. Others may be advised to limit weight-bearing for several weeks. The foot is typically wrapped in a dressing to maintain alignment and reduce swelling.
Sutures are removed approximately two weeks post-surgery, and patients gradually transition to regular footwear over the next 6–8 weeks. Full recovery—including resolution of swelling and return to normal activity—can take several months. Most patients achieve 80% of their recovery by 3–4 months, with complete healing often taking up to a year.
Potential Complications
Like any surgical procedure, the Chevron osteotomy carries risks. General complications include infection, delayed wound healing, nerve injury, and deep vein thrombosis. Specific risks associated with this procedure include:
- Malunion: Improper positioning of the bone can result in persistent deformity or require revision surgery.
- Painful hardware: Screws or pins may cause discomfort and occasionally need removal.
- Avascular necrosis: Rarely, the blood supply to the metatarsal head may be compromised, leading to bone death.
- Recurrence: In some cases, the bunion may return over time, especially if underlying biomechanical issues are not addressed.
Why Choose Chevron Osteotomy?
The Chevron osteotomy is widely regarded as a reliable and effective technique for bunion correction. Its advantages include:
- Precision: The V-shaped cut allows controlled realignment of the metatarsal head.
- Stability: Internal fixation with screws ensures secure healing.
- Cosmetic and functional improvement: Patients often report reduced pain and improved foot appearance.
- Outpatient convenience: Most procedures are performed without hospital admission.
However, it is not suitable for all cases. Patients with severe deformities, extensive arthritis, or poor vascular health may require alternative procedures, such as the Scarf osteotomy or Lapidus procedure.
The Chevron osteotomy represents a cornerstone in the surgical management of bunions. By addressing the structural misalignment at the heart of hallux valgus, it offers patients a pathway to pain relief, improved mobility, and restored foot function. While not without risks, its success in treating mild to moderate bunions makes it a preferred choice among foot and ankle surgeons. For individuals struggling with bunion-related discomfort, a consultation with a qualified orthopedic or podiatric surgeon can determine whether this procedure is the right step toward healthier feet.