Billet F P, Schmitt W G, Böhmer E
Radiologische Abteilung, Juliusspital Würzburg.
Rofo. 1991 Aug;155(2):171-8. doi: 10.1055/s-2008-1033240.
A traumatic osseous bridge between lumbar transverse processes is a bone formation occurring after severe or even mild trauma of the back. However, only few of the patients with a contusion of the back or a fracture of a lumbar transverse process develop such an osseous bridge. The localisation of the haematoma plays an important role in this process, but myositis ossificans is a mandatory condition. Anamnesis will not lead to traumatic aetiology in all cases, because sometimes the patient is not aware of the fact that a transverse process has been fractured. The diagnosis finally depends on the recognition of the different shapes. The traumatic osseous bridge is characterised by the kind of trauma that causes the fracture of the transverse process. The shapes can be classified as "h", "H", "K", or "Z". Among 72 patients with inter-transverse osseous bridges, only 11 patients have congenital bridges. The congenital osseous bridge shows typical features that can be explained by means of embryogenic and functional dynamic considerations. These symptoms are the O-shape, concavity of the lumbar spine of a pathological nature and the absence of degenerative changes in the corresponding intervertebral space.
腰椎横突间的创伤性骨桥是在背部遭受严重甚至轻度创伤后形成的骨结构。然而，仅有少数背部挫伤或腰椎横突骨折的患者会形成这种骨桥。血肿的位置在这一过程中起着重要作用，但骨化性肌炎是一个必要条件。在所有病例中，病史不一定能得出创伤性病因，因为有时患者并未意识到横突已经骨折。最终诊断取决于对不同形态的识别。创伤性骨桥的特征在于导致横突骨折的创伤类型。其形态可分为“h”形、“H”形、“K”形或“Z”形。在72例有横突间骨桥的患者中，仅有11例为先天性骨桥。先天性骨桥具有典型特征，可通过胚胎发育和功能动力学方面的考虑来解释。这些症状包括O形、病理性腰椎前凸凹陷以及相应椎间隙无退变改变。
