Percutaneous Oblique Distal Osteotomy of the Fifth Metatarsal for Bunionette Correction.

BACKGROUND

Bunionette is a common foot disorder, and several types of corrective surgery have been described. With the popularization of minimally invasive surgeries, the forefoot region has become a suitable area for this type of technique. The aim of this study was to evaluate the results of oblique distal osteotomy of the fifth metatarsal adapted for a percutaneous approach.

METHODS

We prospectively evaluated 31 consecutive tailor's bunion patients who underwent operative correction on a total of 42 feet between 2017 and 2019 after failure of conservative treatment. Clinical outcomes such as pain (visual analog scale [VAS]), function (American Orthopaedic Foot & Ankle Society [AOFAS] Lesser Toe Metatarsophalangeal-Interphalangeal Scale scoring system), personal satisfaction, and complications were evaluated. Radiographic aspects were also examined. Shapiro and Mann-Whitney statistical tests were conducted. The average age of the patients was 69.5 years, and the average follow-up was 13.1 months.

RESULTS

After the operative procedure, there was a decrease of 6.6 points on the VAS for pain ( < .001) and an increase of 34.9 in the AOFAS score ( < .001). Radiographic correction was achieved for both the fifth metatarsophalangeal angle ( < .001) and the intermetatarsal angle ( < .001), which showed decreased values. There was 1 case of superficial infection and 2 cases of nonunion (asymptomatic). A large majority of patients regarded the procedure outcome as satisfactory.

CONCLUSION

This percutaneous oblique distal osteotomy of the fifth metatarsal for bunionette deformity produced improvements in pain and function and a high rate of satisfaction, with a low incidence of complications and a high capacity for correcting the deformity.

LEVEL OF EVIDENCE

Level II, prospective cohort study.