Huggett J M, Roszler M H
Department of Radiology, Wayne State University, Detroit, USA.
Injury. 1998 Oct;29(8):623-6. doi: 10.1016/s0020-1383(98)00150-8.
A retrospective study of blunt chest injuries due to motor vehicle accidents between the years 1990 and 1995 found 9 cases of sternal fracture that had both lateral plain film and thoracic axial CT scans performed. Plain film identified 8 of the 9 fractured sternums. CT scanning was only able to identify 6 sternal fractures. Secondary signs of sternal fracture were only seen in 5 of 9 patients, 3 had retrosternal haematomas and 2 had haematoma of the mediastinum.
(1) plain film is still superior to Axial CT scanning for identification of sternal fracture; (2) retrosternal haematoma, although a specific sign for sternal fracture has low sensitivity (3/9); (3) mediastinal haematoma, a poorly specific sign for sternal fracture also demonstrated low sensitivity.
一项对1990年至1995年间机动车事故所致钝性胸部损伤的回顾性研究发现，9例胸骨骨折患者均进行了胸部X线平片和胸部轴向CT扫描。X线平片识别出了9例骨折胸骨中的8例。CT扫描仅能识别出6例胸骨骨折。胸骨骨折的间接征象仅在9例患者中的5例中可见，3例有胸骨后血肿，2例有纵隔血肿。
（1）在识别胸骨骨折方面，X线平片仍优于轴向CT扫描；（2）胸骨后血肿虽是胸骨骨折的特异性征象，但敏感性较低（3/9）；（3）纵隔血肿作为胸骨骨折的非特异性征象，敏感性也较低。
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