Radiographic and Patient-Reported Outcomes for First Tarsometatarsal Arthrodesis Using an Intramedullary Nail for Hallux Valgus Deformity A Consecutive Case Series.

Background: First tarsometatarsal (TMT) arthrodesis is one of the most common procedures performed each year for the correction of hallux valgus deformity, and nonunion rates for first TMT arthrodesis are commonly reported to be between 4% and 15%. The purpose of this study was to evaluate the effectiveness of an intramedullary nail system in patients requiring first TMT arthrodesis.

Methods: An ambispective, multisurgeon, consecutive case series was conducted, in which retrospective and prospective collection of patient-reported outcome measure (PROM) and radiologic data were conducted. Patients who underwent first TMT arthrodesis from July 2019 to July 2022 for hallux valgus deformity with an intramedullary nail system and had adequate records for a minimum of 3 months postoperation (±4 weeks) were included.

Results: Seventy patients were included in the final analysis, with a median prospective PROM follow-up of 1.6 years. There was an overall union rate of 91.4% (64/70 patients). Nine patients required secondary procedures: 4 hardware removals and 5 nonunion revisions. Collected PROMs and radiologic data showed significant improved from preoperative to prospective follow-up (P < .01).

Conclusion: First TMT arthrodesis using an intramedullary nail system result in nonunion rates and PROMs comparable to other techniques currently being used.

Levels of evidence: Level IV: Retrospective Case Series.