Osteoid Osteoma of the Ankle Posing As a Distal Tibiofibular Syndesmosis : A Rare Case Report

Introduction Osteoid osteomas are tumors of the bone which have lower limbs as the commonest site of involvement [1]. These tumors were first described in 1936 by Jaffe [1]. The tumor is described to be osteoblastic and benign [1]. Adoloscent young males are the commonly affected population [1]. The classical presentation is only noted in two-third of the patients [2].Radiographic appearance of a radioluscent central nidus with surrounding area of cortical thickening is considered a hallmark for making a diagnosis o f o ste o i d o ste o m a [ 1 , 3 ] . T h e t u m o r h a s a subperiostealpresentation [4]. Several studies and reports have suggested that the tumor has a subperiosteal presentation to begin with and later becomes cortical or intramedullary [4].