Mal-union of sustentaculum tali fracture with talo-calcaneal coalition leading to tarsal tunnel syndrome: A case report

Pradeep Moonot, Gaurav Sharma*, Anish R. Kadakia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Displaced isolated fractures of sustentaculum tali are rare. Inadequate treatment of these injuries can rarely lead to non-union or mal-union and in most cases are treated non-surgically. We report a unique case of undiagnosed mal-union of sustentaculum tali in the setting of underlying tarsal coalition that resulted in symptoms of tarsal tunnel. Osteotomy and excision of the mal-united fragment and coalition along with decompression of the tarsal tunnel was performed. The patient had immediate improvement in pain and the paraesthesia recovered by the end of 6 weeks post-operatively. The Foot and Ankle disability score (FADI) score improved from 26.0 pre-operatively to 96.2 at 3 years’ follow-up. This case highlights that isolated fractures of sustentaculum tali warrant advanced imaging and surgical reduction and fixation may be appropriate to avoid long-term disability where displacement compromises the tarsal tunnel or function of the subtalar joint.

Original languageEnglish (US)
Article number101797
JournalFoot
Volume47
DOIs
StatePublished - Jun 2021

Keywords

  • Mal-union
  • Sustentaculum tali
  • Talo-calcaneal coalition

ASJC Scopus subject areas

  • Podiatry
  • Orthopedics and Sports Medicine

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