First-Ray Distal Metatarsal and Proximal Phalangeal Osteotomies Without Soft Tissue Procedure for Severe Hallux Valgus: A Case Series.

Abstract

This case series reported the outcomes of severe hallux valgus treated with first-ray distal metatarsal and proximal phalangeal osteotomies without soft tissue procedure. The medical records of patients who underwent this surgery from February 2018 to December 2021 were reviewed, including patients with a hallux valgus angle (HVA) ≥40 degrees who were followed up for >2 years. The analyzed data included age, sex, height, weight, and body mass index at the surgery, HVA and intermetatarsal angle (IMA) on the weighted anteroposterior radiograph of the affected foot, the Japanese Society for the Surgery of the Foot score, visual analog scale (VAS) score, and passive plantarflexion and dorsiflexion angles of the first metatarsophalangeal joint 1 month before surgery and at final follow-up. The study group included 35 feet in 29 patients (26 females) with a mean age of 67 ± 10.6 years and mean follow-up of 3.5 ± 0.8 years. Average preoperative and final follow-up measures were HVA, 46.8 to 7.7 degrees; IMA, 18.8 to 9.5 degrees; and VAS score, 61.5 ± 29.6 to 2.7 ± 4.6. Range of motion decreased on average: dorsiflexion, 83.6 ± 14.7 to 71.3 ± 12.0 degrees; and plantarflexion, 63.0 ± 14.7 to 53.0 ± 11.8. All changes were statistically significant (P < .001). This surgery achieved good correction and clinical outcomes for severe hallux valgus, but the postoperative range of motion decreased.Level of Evidence: Level IV, case series.