Os Trigonum syndrome – A case report

M.C Vinod Kumar Reddy

doi:10.7439/ijbar.v6i1.1564

Abstract

The ostrigonum is a small bone present on the posterolateral aspect of the talus. It is formed from a separate ossification center which fails to unite with the talus itself. Incidence is about 3-15% .The diagnosis can be difficult to make as symptoms and physical exam findings mimic those that occur withproblems related to an accessory soleus muscle, flexor hallucislongus, posteriortibialis, or peroneal tendons, arthritis involving the posterior tibiotalar or subtalar joints, or ostrigonum syndrome. Misdiagnosis of such injuries may result in inadequate management including immediate weight bearing and prolonged symptoms.

Highlights

The developing human skeleton has several ossification centers that, when fails to fuse with the main body of their corresponding bone, are commonly accepted as normal anatomical variations without definite clinical significance
The ostrigonum is a small bone present on the posterolateral aspect of the talus formed from a separate ossification center which fails to unite with the talus itself[1][2]
Seven months after the initial trauma and the onset of symptoms, he was evaluated by one of the authors. He presented with posterolateral aspect left ankle pain which aggravated on walking

Summary

Introduction

The developing human skeleton has several ossification centers that, when fails to fuse with the main body of their corresponding bone, are commonly accepted as normal anatomical variations without definite clinical significance. The ostrigonum is a small bone present on the posterolateral aspect of the talus formed from a separate ossification center which fails to unite with the talus itself[1][2]. The ostrigonum syndrome is characterized by pain, and sometimes swelling, in the posterolateral aspect of the ankle. After 2 week the pain had subsided and the patient returned to playing badminton, when he again noticed pain in the left ankle.

Results

Conclusion