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01.12.2018 | Research article | Ausgabe 1/2018 Open Access

Journal of Orthopaedic Surgery and Research 1/2018

Effect of metatarsal osteotomy and open lateral soft tissue procedure on sesamoid position: radiological assessment

Zeitschrift:
Journal of Orthopaedic Surgery and Research > Ausgabe 1/2018
Autoren:
Young Rak Choi, Sang-June Lee, Jun Hyun Kim, Tae Ho Kim, Chi Hoon Oh

Abstract

Background

Incomplete sesamoid reduction is a potential risk factor for the recurrence of hallux valgus. The purpose of this study was to radiologically investigate changes in sesamoid position after chevron osteotomy and the open lateral soft tissue procedure.

Methods

Sixty-eight feet that underwent operative correction for hallux valgus deformity were reviewed consecutively. The hallux valgus angle (HVA), first to second intermetatarsal angle (IMA), tibial sesamoid position (TSP), distance of the fibular sesamoid (DFS), and translation of the metatarsal head (TMH) were evaluated preoperatively and at final follow-up.

Results

While most parameters were significantly decreased after surgery, no significant change in DFS (correction − 1.45 mm, p = 0.08) was noted. The difference between preoperative and postoperative TSP values (ΔTSP) has a moderately positive correlation with difference in TMH values (ΔTMH) (Rho 0.475, p = .000). Other parameters were similarly correlated.

Conclusions

First, metatarsal bone realignment reduced the sesamoid, but its position, relative to the second metatarsal axis (DFS), was unchanged. The sesamoid is reduced by the lateral translation of the first metatarsal but not by medial sesamoid migration.
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