Department of Biology, University of Oklahoma, Norman, Oklahoma, 73072, USA.
Sam Noble Oklahoma Museum of Natural History, 2401 Chautauqua Avenue, Norman, Oklahoma, 73072, USA.
Sci Rep. 2019 Jun 18;9(1):8705. doi: 10.1038/s41598-019-45101-6.
In 2001, a nearly complete sub-adult Tenontosaurus tilletti was collected from the Antlers Formation (Aptian-Albian) of southeastern Oklahoma. Beyond its exceptional preservation, computed tomography (CT) and physical examination revealed this specimen has five pathological elements with four of the pathologies a result of trauma. Left pedal phalanx I-1 and left dorsal rib 10 are both fractured with extensive callus formation in the later stages of healing. Left dorsal rib 7 (L7) and right dorsal rib 10 (R10) exhibit impacted fractures compressed 26 mm and 24 mm, respectively. The fracture morphologies in L7 and R10 indicate this animal suffered a strong compressive force coincident with the long axis of the ribs. All three rib pathologies and the pathological left phalanx I-1 are consistent with injuries sustained in a fall. However, it is clear from the healing exhibited by these fractures that this individual survived the fall. In addition to traumatic fractures, left dorsal rib 10 and possibly left phalanx I-1 have a morphology consistent with post-traumatic infection in the form of osteomyelitis. The CT scans of left metacarpal IV revealed the presence of an abscess within the medullary cavity consistent with a subacute form of hematogenous osteomyelitis termed a Brodie abscess. This is only the second reported Brodie abscess in non-avian dinosaurs and the first documented occurrence in herbivorous dinosaurs. The presence of a Brodie abscess, known only in mammalian pathological literature, suggest mammalian descriptors for bone infection may be applicable to non-avian dinosaurs.
2001 年，在美国俄克拉荷马州东南部的 Antlers 组（Aptian-Albian）采集到了近乎完整的未成年副栉龙标本。除了保存状态极佳之外，计算机断层扫描（CT）和体格检查显示，该标本有五个病理元素，其中四个是创伤的结果。左侧跖骨 I-1 和左侧背肋 10 均骨折，愈合后期有广泛的骨痂形成。左侧背肋 7（L7）和右侧背肋 10（R10）显示出受影响的骨折，分别被压缩了 26mm 和 24mm。L7 和 R10 的骨折形态表明，这只动物受到了与肋骨长轴一致的强大压缩力。所有这三种肋骨病变和病理性左侧跖骨 I-1 都与坠落伤一致。然而，从这些骨折的愈合情况可以清楚地看出，这只动物在坠落中幸存了下来。除了创伤性骨折外，左侧背肋 10 和可能的左侧跖骨 I-1 的形态与骨髓炎形式的创伤后感染一致。左侧第四掌骨的 CT 扫描显示，骨髓腔内存在脓肿，符合亚急性血源性骨髓炎，即 Brodie 脓肿。这是在非鸟类恐龙中仅有的第二例报道的 Brodie 脓肿，也是在草食性恐龙中首次记录。Brodie 脓肿的存在，仅见于哺乳动物病理学文献，表明用于骨骼感染的哺乳动物描述符可能适用于非鸟类恐龙。
