A pedicle screw and rod system for minimally invasive spinal fusion surgery that allows for ease of placement of a fusion rod on the heads of pedicle screws. The system includes extender tubes having a bore extending therethrough. The bore includes a cylindrical portion and a key portion. A ...
【摘要】目的探讨关节突螺钉(translaminarfacetscrew,TFS)与椎弓根螺钉(pediclescrew,PS)在前路椎间融 合术(anteriorlumbarinterbodyfusion,ALIF)中的力学稳定性,以及2种后路固定螺钉在ALIF对相邻节段的影响是 否一致。方法采用正常成人新鲜尸体腰椎标本,将16具标本随机分为无手术组(intact)、ALIF组、ALIF+TFS组、 ALIF...
That is, in spinal fusion surgery, we made a hypothesis that the occupancy rate of the pedicle screw (ORPS) in the vertebral body is closely related to UIV fractures. Moreover, it was supposed that the way to set instrumentation such as the direction of pedicle screw (PS) or rod ...
CORRELATION OF CLINICAL OUTCOME AND SPINOPELVIC SAGITTAL ALIGNMENT AFTER SURGICAL POSTERIOR INTERVERTEBRAL FUSION COMBINED WITH PEDICLE SCREW FIXATION FOR LOW-GRADE ISTHMIC LUMBAR SPONDYLOLISTHESIS. Chinese Journal of Reparative and Reconstructive Surgery, 2013, 27(11): 1338-1344. doi: 10.7507/1002-...
POSTERIOR UNILATERAL PEDICLE SCREW FIXATION PLUS LUMBAR INTERBODY FUSION FOR TREATMENT OF DEGENERATIVE LUMBAR INSTABILITY. Chinese Journal of Reparative and Reconstructive Surgery, 2013, 27(6): 703-707. doi: 10.7507/1002-1892.20130155 Copy Copyright © the editorial department of Chinese Journal of ...
(4)failed previous fusion, (5)pseudarthrosis, (6)spinal stenosis. It is not intended for pedicle screw fixation above T8. PRECAUTIONS: 1.The spinal fixation system has not been evaluated for safety and compatibility in the MR environme...
The screw breakage rate was higher than that in CPS group,but there was no significant difference(P0.05). The fusion rate in EPS group(99.4%,172/173) was significantly higher than that in CPS group(93.6%,218/233)(P0.05).Conclusions:In the short segment lumbar fusion surgery in ...
Participants with spondylolytic or degenerative lumbar spondylolisthesis were randomised into percutaneous pedicle screw placement with a mini-open decompression (mini-open), or conventional open surgery with instrumented fusion (open). The primary outcome measure was short-term low back pain after 2 ...
CT scans (h–j) at 2 years after surgery demonstrated solid interbody fusion, and the translaminar facet screw entered through the base of spinous process on one side, fixed the contralateral facet joint after traversing the laminar, and ended at the base of the transverse process Full size ...
A pedicle screw fastening that can be made polyaxial, monoaxial, fixed, or provide a predefined monoaxial placement. The fastening system consists of an anchoring bone screw having