—In a pilot study, I observed a relationship between domestic livestock grazing and location of American pika (Ochotona princeps) haypiles in the eastern Sierra Nevada and several Great Basin mountain ranges. Where vegetation communities adjacent to talus bases (forefields) were grazed, mean distance from the talus borders to the closest fresh hay piles was 30.1 m (SD = 18.9 m, n = 27), and hay...

The os trigonum is an inconsistently present accessory bone of the foot situated at the posterolateral aspect of the talus. It may be radiographically confused with fractures of the posterior process of the talus. Fracture of the os trigonum per se is extremely rare. Hyperplantarflexion of the ankle is the mechanism of injury in which the os trigonum is compressed between the posterior malleolu...

Osteochondroma or exostosis is the most common benign bone tumor, and occurring frequently in the proximal humerus, tibia, and distal femur. It rarely affects talus. Osteochondroma of talus is a very rare etiology of tarsal tunnel syndrome (TTS). We report a rare case of extensive osteochondroma of the talus in a 60 year old female presenting with multiple swellings around the ankle and symptom...

A rare case of closed complete rupture of the flexor hallucis longus tendon at its groove in the posterior process of the talus is reported in a soccer player who developed pseudarthrosis of the posterolateral tubercle of the talus after a Shepherd's fracture. Partial rupture or tenosynovitis of the flexor hallucis longus tendon at this level is well known in classical ballet dancers and soccer...

A carbon black transference technique was used to determine the contact area in twenty-three dissected tibiotalar articulations, with the talus in neutral position and displaced one, two, four, and six millimeters laterally. The greatest reduction in contact area occurred during the initial one millimeter of lateral displacement, the average reduction being 42 per cent. With further lateral dis...

Intra-osseous lipomas are rare benign tumours. We report one such case in the talus of a 60-year-old man. The patient underwent curettage and bone grafting. At the 22-month follow-up, radiographs of the talus showed dense sclerosis with multiple cortical breaks in the anterior process and no evidence of local recurrence or avascular necrosis. The patient had a painless ankle joint with normal r...

In I 882 Shepherd reported three cases of fracture of the posterior process of the talus, which he had found while working in the dissecting room. In each case the fragment of hone consisted of the posterior part of the tubercle of the talus lateral to the groove for the tendon of the flexor hallucis longus, and had attached to it the posterior fasciculus of the lateral ligament of the ankle jo...

Aneurysmal bone cyst (ABC) of the talus is an extremely rare lesion; less than 20 cases have been reported in PubMed till 2012. We report a primary ABC of the talus in a 20-year-old male that was managed by extended intralesional curettage with phenol as an adjuvant and autologous cancellous iliac crest bone grafting. The patient had excellent functional outcome and there was no recurrence at 2...

The dome of the talus is the part that articulates with the ankle mortice formed by the lower articular surfaces of tibia and fibula. A fracture of this part of the talus may be called a dome fracture. Such fractures are not common and the significance of the original radiographic appearance is not always appreciated. Definitive treatment is therefore often unnecessarily delayed ; this has been...