Abstract
Recurrence of deformity remains a concern when fusing the first tarsometatarsal joint for correction of hallux valgus (HV). A recently described construct adds an additional point of fixation from the plantar medial first metatarsal to the intermediate cuneiform. The purpose of this study was to determine the maintenance of correction of the first and second intermetatarsal angle, hallux valgus angle, and tibial sesamoid position after undergoing a first tarsometatarsal joint arthrodesis using the proposed construct. A radiographic review was performed of patients with HV treated with a first tarsometatarsal joint arthrodesis with the addition of a cross-screw intermediate cuneiform construct. Three observers reviewed radiographic data, including preoperative weightbearing, first weightbearing, and final weightbearing plain-film radiographs. Initial improvement and maintenance of intermetatarsal angle, hallux valgus angle (HVA), and tibial sesamoid position were evaluated radiographically. A total of 62 patients met inclusion criteria and were included in the study. Mean follow-up time was 9.3 months (SD 6.7). Bony union was achieved in 60 of 62 patients (96.7%). Two of 62 patients required revision surgery as a result of recurrence (3.3%). Final mean improvement of the intermetatarsal angle (IMA) was 6.8 degrees (±2.9 degrees), HVA was 14.8 degrees (±7.5 degrees), and tibial sesamoid position was 2.4 (±1.4) positions. Mean loss of IMA correction was 1.5 degrees (±1.6), HVA was 2.9 degrees (±4.8 degrees), and tibial sesamoid position was 0.8 (±0.8). This study showed that the cross-screw intermediate cuneiform construct for first tarsometatarsal joint arthrodesis had a good union rate, a low complication rate, and maintained radiographic correction. Level IV, retrospective case series.
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