# Case Report: Postsurgical hallux varus in which metatarsophalangeal joint arthrodesis was useful

## TL;DR

A 74-year-old woman with a long-term foot deformity found relief through a surgical procedure that corrected her pain and restored normal foot alignment.

## Contribution

This case report highlights the effectiveness of metatarsophalangeal joint arthrodesis in treating iatrogenic hallux varus.

## Key findings

- The patient's hallux valgus angle improved from -28° to 0° post-surgery.
- The intermetatarsal angle improved from 0° to 6°, indicating better alignment.
- The patient experienced pain-free walking and no deformity recurrence after 4 years.

## Abstract

A 74-year-old Japanese woman who underwent Mann’s procedure with fibular sesamoidectomy for left hallux valgus 21 years ago complained of left hallucis pain. She was diagnosed with iatrogenic hallux varus and hammer toe deformities. Metatarsophalangeal joint arthrodesis and shortening oblique osteotomy were performed. After surgery, the hallux valgus angle improved from -28° to 0°, and the intermetatarsal angle between the first and the second metatarsus improved from 0° to 6°. The Japanese Society for Surgery of the Foot score improved from 75 to 81 points. She could walk without pain and sustained no deformity at 4 years after the surgery.