Osteochondral fractures of the talus (Subscribe)  

Although a traumatic etiology is believed to play a major role in production of these lesions, idiopathic osteonecrosis may be another factor;
Anterolateral lesions:
- may result from impaction of talus on fibula as the dorsiflexed ankle is forced into inversion (see ankle sprain);
- the vast majority are caused by trauma;
- these...

OBJECTIVE: The objective of this study was to determine the presence and location of subchondral bone contusions, fractures, and "kissing" lesions of the talotibial joint after a sprain of the ankle shown on MR imaging. MATERIALS AND METHODS: We retrospectively reviewed the images of all consecutive patients who underwent MR...

Osteochondral fractures of the talus are uncommon. They are classified according to Berndt and Harty, as progressing in severity through four stages. This classification, however, does not address extra-articular extrusion of the osteochondral fragment. We report an osteochondral lesion of the talar dome which presented as an extruded extra-articular fragment...

Most ankle injuries are straightforward ligamentous injuries. However, the clinical presentation of subtle fractures can be similar to that of ankle sprains, and these fractures are frequently missed on initial examination. Fractures of the talar dome may be medial or lateral, and they are usually the result of inversion injuries,...

occur on the med or lat talar dome
Classification
Stage I - Localised subchondral trabecular compression not evident on plane X-Rays bone scan & MRI
Stage II - Incomplete separation of the fragment which is usually missed on X-Ray bone scan if suspected
Stage IIA - when the development of a subchondral cyst
Stage III...

Osteochondral lesions were first described by Konig in 1888. He theorized that spontaneous necrosis was a causative factor for this condition. In 1922, Kappis described osteochondral lesions in the talus. Rendu,in a report published in 1932 describing intraarticular fractures of the talus, was the first to propose that these lesions may...

We undertook a retrospective study of 122 patients with ankle pain to determine the accuracy of bone scintigraphy using 99mTc-methylene diphosphonate (MDP) for detection of osteochondral talar dome fractures (OCTDF). Plain radiographs, which were available in 97 patients, had not revealed any abnormality in the talar dome. Bone scintigraphy was...