A polyaxial screw is used for connecting vertebrae to rods in spinal surgery, particularly spinal fusion procedures. It is a type of screw whose spherical head is enclosed in a housing, which allows the screw a range of motion along several different axes relative to the housing. The ball joint allows the surgeon some flexibility in placing the screws. The screws are typically placed into the pedicle of the vertebra.
It has also been hypothesized that polyaxial screws add a safety benefit by failing in the housing/screw interface before breaking in the shaft of the bone screw or in the orthopaedic rod. Unlike standard lateral mass plate and screw systems, the new cervical polyaxial screw and rod system easily accommodates severe degenerative cervical spondylosis and curvatures. This instrumentation system allows for polyaxial screw placement with subsequent multiplanar rod contouring and offset attachment.[1]
^Subach, Brian R.; Haid, RW; Traynelis, VC; Sasso, RC; Subach, BR; Fiore, AJ; Rodts, GE (15 Jan 2002). "Posterior Cervical Fixation Using a New Polyaxial Screw and Rod System: Technique and Surgical Results". Neurosurg Focus. 12 (1): E8. PMID 16212335.
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polyaxial, screw, polyaxial, screw, used, connecting, vertebrae, rods, spinal, surgery, particularly, spinal, fusion, procedures, type, screw, whose, spherical, head, enclosed, housing, which, allows, screw, range, motion, along, several, different, axes, rela. A polyaxial screw is used for connecting vertebrae to rods in spinal surgery particularly spinal fusion procedures It is a type of screw whose spherical head is enclosed in a housing which allows the screw a range of motion along several different axes relative to the housing The ball joint allows the surgeon some flexibility in placing the screws The screws are typically placed into the pedicle of the vertebra It has also been hypothesized that polyaxial screws add a safety benefit by failing in the housing screw interface before breaking in the shaft of the bone screw or in the orthopaedic rod Unlike standard lateral mass plate and screw systems the new cervical polyaxial screw and rod system easily accommodates severe degenerative cervical spondylosis and curvatures This instrumentation system allows for polyaxial screw placement with subsequent multiplanar rod contouring and offset attachment 1 External links EditU S Patent 5 520 690 Anterior spinal polyaxial locking screw plate assembly 1996References Edit Subach Brian R Haid RW Traynelis VC Sasso RC Subach BR Fiore AJ Rodts GE 15 Jan 2002 Posterior Cervical Fixation Using a New Polyaxial Screw and Rod System Technique and Surgical Results Neurosurg Focus 12 1 E8 PMID 16212335 This surgery article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Polyaxial screw amp oldid 1028633467, wikipedia, wiki, book, books, library,
