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Tytuł: Two types of bone necrosis in the middle triassic pistosaurus longaevus bones: The results of integrated studies
Autor: Surmik, Daniel
Rothschild, Bruce M.
Dulski, Mateusz
Janiszewska, Katarzyna
Słowa kluczowe: Bone necrosis; Decompression syndrome; Paleopathology; Septic arthritis; Triassic; Pistosaurus Longaevus
Data wydania: 2017
Źródło: Royal Society Open Science, vol. 4, iss. 7, (2017), Art. No. 170204
Abstrakt: Avascular necrosis, diagnosed on the basis of either a specific pathological modification of the articular surfaces of bone or its radiologic appearance in vertebral centra, has been recognized in many Mesozoic marine reptiles as well as in present-day marine mammals. Its presence in the zoological and paleontologic record is usually associated with decompression syndrome, a disease that affects secondarily aquatic vertebrates that could dive. Bone necrosis can also be caused by infectious processes, but it differs in appearance from decompression syndrome-associated aseptic necrosis. Herein, we report evidence of septic necrosis in the proximal articular surface of the femur of a marine reptile, Pistosaurus longaevus, from the Middle Triassic of Poland and Germany. This is the oldest recognition of septic necrosis associated with septic arthritis in the fossil record so far, and the mineralogical composition of pathologically altered bone is described herein in detail. The occurrence of septic necrosis is contrasted with decompression syndrome-associated avascular necrosis, also described in Pistosaurus longaevus bone from Middle Triassic of Germany.
DOI: 10.1098/rsos.170204
ISSN: 2054-5703
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