# Achilles Tendon Tear Following an Unusual Pattern of Open Pure Ankle Dislocation: A Case Report

## TL;DR

A rare case of open Achilles tendon tear and subtalar dislocation after a motorcycle accident is reported, highlighting complex treatment and recovery.

## Contribution

This is the first reported case of open lateral subtalar dislocation associated with an open Achilles tendon tear.

## Key findings

- The patient underwent successful reduction and repair of both the dislocation and tendon tear.
- Postoperative rehabilitation resulted in full range of motion without complications.
- The case provides insights for managing rare musculoskeletal injuries.

## Abstract

We present a rare case of concurrent open Achilles tendon tear and pure subtalar dislocation in a 20-year-old male following a motorcycle accident, highlighting the complexity of managing such unique musculoskeletal injuries. The patient was initially admitted with an open and deformed left ankle, underwent prompt primary debridement, and received immediate medical intervention. Despite unsuccessful attempts to reduce the dislocation through external maneuvers, subsequent radiographic evaluation revealed a subtalar dislocation associated with a 90° rotation of the talus.

A direct reduction was achieved in the operating room, uncovering a complete tear of the Achilles tendon and a section of the posterior tibial artery during more intensive debridement. The vascular surgery team repaired the posterior tibial artery, followed by Achilles tendon repair using a Kessler suture technique. Postoperative care involved immobilization and adapted rehabilitation, resulting in the patient regaining full range of motion without complications.

To the best of our knowledge, this case represents the first reported open lateral subtalar dislocation associated with an open Achilles tendon tear. The detailed treatment strategies and outcomes offer valuable insights for clinicians facing similar challenges and inspire further research on rare musculoskeletal injuries.