Fracture of the posterior process of the talus. A case report.
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The authors present a rare case of a talar unicameral bone cyst in a 9-year-old boy. This is the first such case presented in podiatric literature; the lesion has been cited infrequently in world literature. A brief review of the literature is discussed, along with the diagnostic tests, possible complications, and proper therapy for this lesion.
The authors present a pictorial essay showing the range of variability of separate and attached os trigona in dry-bone specimens. The presence of free os trigona is found to be 1.7% in an early 20th-century skeletal sample, with no findings of the trait in 513 tali of prehistoric native Americans and Eskimos.
Arthropathy of the ankle joint is commonly observed in people with severe haemophilia. A review of the radiological appearance of ankle arthropathy provides evidence that the changes in the talar bone of the ankle joint are probably due to avascular necrosis. This may arise due to impairment to the arterial supply, as it enters the talar neck, secondary to the increased pressure at the time of haemarthroses.
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A brief discussion of the salient clinicopathologic features of an entity known as osteochondritis dissecans and an illustrative case have been presented. High quality radiographic studies are of prime importance in formulating the diagnosis. Successful treatment of this relatively uncommon lesion can be provided once a thorough evaluation is made.
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The authors report a successful surgical therapy of 4 patients with closed fracture-dislocation of the astragalar bone. It is believed that an operative reposition with subsequent screw osteosynthesis (metallic or with a heterobone) is the most rational and atraumatic method of treatment in this category of patients. According to their findings the operative procedure should be performed as early as possible to avoid adverse complications not infrequently associated with this lesion (necrosis of skin covers of the foot, aseptic necrosis of the astragalar bone).
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