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The caudal vertebrae often articulate with haemal arches ventrally. [1] The number of caudal vertebrae in animals can vary greatly. Anguid lizards have been reported to have as many as 111 caudal vertebrae, [1] whereas as few as seven are present in the tail of the early therapsid Tapinocaninus. [2] In lepidosaurs and captorhinids, the caudal ...
This structure can only be seen in birds. Some posterior thoracic vertebrae, the lumbar, sacral and a few anterior caudal vertebrae are fused to form a complex bone called synsacrum. The innominate bones are fused with the synsacrum to a greater or lesser extent, according to species, forming an avian pelvis. This forms a more extensive rigid ...
Caudal regression syndrome, or sacral agenesis (or hypoplasia of the sacrum), is a rare birth defect. It is a congenital disorder in which the fetal development of the lower spine—the caudal partition of the spine—is abnormal. [1] It occurs at a rate of approximately one per 60,000 live births. [2]
A haemal arch, also known as a chevron, is a bony arch on the ventral side of a tail vertebra of a vertebrate. The canal formed by the space between the arch and the vertebral body is the haemal canal. A spinous ventral process emerging from the haemal arch is referred to as the haemal spine. Blood vessels to and from the tail run through the arch.
Known from an isolated caudal vertebra. [29] Initially thought to be a neotheropod, [29] but subsequently discovered to be an indeterminate crocodyliform. [30] Laganosuchus. L. thaumastos: A stomatosuchid. Lavocatchampsa [31] L. sigogneaurusselae. Anterior portion of a rostrum with mandible, with an almost complete dentition [31] A ...
There are many recognized spinal diseases, some more common than others. Spinal disease also includes cervical spine diseases, which are diseases in the vertebrae of the neck. A lot of flexibility exists within the cervical spine and because of that, it is common for an individual to damage that area, especially over a long period of time.
The corresponding average adjusted costs for kyphoplasty patients were $15,117 and $41,339. There were no significant differences in adjusted costs in the first 9 months postsurgery, but kyphoplasty patients were associated with significantly lower adjusted treatment costs by 6.8–7.9% in the remaining periods through two years postsurgery." [32]
Modern birds still develop longer caudal vertebrae in their embryonic state, which later fuse to form a pygostyle. There are two main types of pygostyle: [citation needed] one, found in Confuciusornithidae, Enantiornithes, and some other Mesozoic birds, as well as in some oviraptorosaurs like Nomingia, is long and rod- or dagger blade-like ...