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Spinal fusion, also called spondylodesis or spondylosyndesis, is a surgery performed by orthopaedic surgeons or neurosurgeons that joins two or more vertebrae. [1] This procedure can be performed at any level in the spine (cervical, thoracic, lumbar, or sacral) and prevents any movement between the fused vertebrae.
Conservative treatment of craniocervical instability includes physical therapy [10] [11] [better source needed] and the use of a cervical collar to keep the neck stable. Cervical spinal fusion is performed on patients with more severe symptoms. [citation needed]
The Hangman's fracture which is a fracture of the C2 vertebral body or dens of the cervical spine upon which the skull base sits to allow the head to rotate, can also be associated with atlanto-occipital dislocation. Despite its eponym, the fracture is not usually associated with a hanging mechanism of injury.
Type II—Long fusion below C2 with an abnormal occipital-cervical junction. Similar to the C2-C3 fusion of McRae and could be viewed as a more elaborate variation. Flexion, extension, and rotation are all concentrated in the area of an abnormal odontoid process or poorly developed ring of C1 which cannot withstand the effects of aging.
Studies by Ha, et al., show that the incidence of SI joint degeneration in post-lumbar fusion surgery is 75% at 5 years post-surgery, based on imaging. [35] Studies by DePalma and Liliang, et al., demonstrate that 40–61% of post-lumbar fusion patients were symptomatic for SI joint dysfunction based on diagnostic blocks. [36] [37]
Sacralization of the L5 vertebra is seen at the lower right of the image. Sacralization of the fifth lumbar vertebra (or sacralization) is a congenital anomaly, in which the transverse process of the last lumbar vertebra (L5) fuses to the sacrum on one side or both, or to ilium, or both.
The atlas (C1) and axis (C2) are the two topmost vertebrae. The atlas (C1) is the topmost vertebra, and along with the axis forms the joint connecting the skull and spine. It lacks a vertebral body, spinous process, and discs either superior or inferior to it. It is ring-like and consists of an anterior arch, posterior arch, and two lateral masses.
It involves fusion of two or more levels utilizing screws, rods, and an interbody graft. It has a theoretical advantage over instrumented posterolateral fusion (iPLF) in that it provides better support for the vertebra along with several potential neurological benefits, but as of 2011 evidence demonstrating actual improved clinical outcomes was ...