Surgical PrinciplesAfter resection of the anulus fibrosus through a retroperitoneal approach the vertebrae adjacent to the disc are stripped of periosteum on their anterior and lateral surfaces and bone grafting is extended to these areas. This allows vascular invasion of the fusion mass from all ...
Clinical outcome and quality of life were then analyzed in a retrospective study. METHODS: Thirty patients with a mean age of 43 years (range, 26-63) who suffered from instability of levels L4-L5 (n = 23), L5-S1 (n = 3), or both (n = 2) underwent surgery. Spondylodesis was ...
The range of motion (ROM) of the L4–L5 segment, von Mises stress of cage, internal fixation, and rod were compared in flexion, extension, left and right bending, and left and right rotation. Results Compared with the TT–TT group, the TT–CBT group exhibited lower ROM of L4–L5 ...
An ALIF is done in the lumbar, or lower, spine. Most commonly it is performed on the L4 through L5 or L5 through S1 segment at the bottom of the lumbar spine, as these segments are most likely to break down. A...
The TLIF procedure was performed in Mimics 17.0 (Materialize, Leuven, Belgium) with decompression and fusion of the L4–5 vertebrae. The L4–L5 vertebral body was then internally fixed with the following combinations of internal screws: (1) TT–TT group, TT at both L4 and L5 segments (Fig...
Objective To investigate the biomechanical and the rationality of mechanics stability of intervertebral fusion through lateral approach.Methods Three-dimension finite element models and calf lumbamodels of L4,L5 intervertebral fusion wit... S Weng,WU Lizhong,LI Weiming,... - 《Fujian Medical Journal》...
(a) the presence of single-segmental lumbar tuberculosis spanning the vertebrae from L2 to L5, (b) preoperative imaging through MRI or CT revealing a proper operative corridor between the psoas muscle and abdominal aorta [13], and (c) bony destruction not exceeding 50% of the vertebrae’s ...
In group 1, the titanium rod was inserted without tension, whereas in group 2, the rod was attached to the pedicle screws at the L4 and L5 levels, creating a 5-mm gap. To attach the rod, the RP was used to press the rod into the pedicle screw. The rod was left in place for ...
Therefore, spacers or implants are required between the vertebrae that were adjacent to the resected disc. Current treatment methods have been unable to accurately control the endplate removal using conventionally designed chisels, scrappers and cutters. Use of conventional surgical instruments does not ...
Client worked as a carpenter and injured his L4-5 and L5-S1 discs from repetitive heavy lifting. We made several demands for treatment. We obtained an opinion from a neurosurgeon and an orthopedic surgeon that back surgery was necessary. The employer refused treatment so our client had surgery...