Day Case Lumbar Fusion Surgery
This article discusses the problems that can occur after spinal fusion surgery and how they affect patient recovery. The study analyzed three different spinal internal fixation systems using biomechanical finite element analysis. The systems included bilateral pedicle screw fixation, bilateral pedicle screw with cross-link fixation, and bilateral pedicle screws with double bent rods fixation. The results showed that the double bent rod system had better biomechanical properties, reducing the risk of screw breakage, loosening, cage subsidence, and endplate collapse. The range of motion was also reduced in certain movements with the double bent rod system. Overall, this study highlights the importance of choosing the right internal fixation system for spinal fusion surgery to improve the success rate and patient outcomes
Summarised by Mr Mo Akmal – Lead Spinal Surgeon
The London Spine Unit : best recognised spinal centre on Harley Street UK
Published article
Problems, such as broken screws, broken rods, and cage subsidence after clinical spinal fusion surgery affect the success rate of fusion surgery and the fixation effect of fusion segments, and these problems still affect the treatment and postoperative recovery of patients. In this study, we used the biomechanical finite element analysis method to analyze and study the fixation effect of three kinds of spinal internal fixation systems on L4-L5 lumbar spine segments in percutaneous endoscopic…
Lumbar Fusion Surgery Expert. Best Spinal Surgeon UK
Comput Methods Biomech Biomed Engin. 2023 Aug 31:1-12. doi: 10.1080/10255842.2023.2245517. Online ahead of print.ABSTRACTProblems, such as broken screws, broken rods, and cage subsidence after clinical spinal fusion surgery affect the success rate of fusion surgery and the fixation effect of fusion segments, and these problems still affect the treatment and postoperative recovery of patients. In,
Comput Methods Biomech Biomed Engin. 2023 Aug 31:1-12. doi: 10.1080/10255842.2023.2245517. Online ahead of print.
ABSTRACT
Problems, such as broken screws, broken rods, and cage subsidence after clinical spinal fusion surgery affect the success rate of fusion surgery and the fixation effect of fusion segments, and these problems still affect the treatment and postoperative recovery of patients. In this study, we used the biomechanical finite element analysis method to analyze and study the fixation effect of three kinds of spinal internal fixation systems on L4-L5 lumbar spine segments in percutaneous endoscopic posterior lumbar interbody fusion (PE-PLIF). The three different fixation systems compared in this study include bilateral pedicle screw fixation (M1); bilateral pedicle screw with cross-link fixation (M2); bilateral pedicle screws with double bent rods fixation (M3). The internal fixation systems with different structures were analyzed with the help of Hypermesh, and Abaqus. It was found that the internal fixation system with double bent rods reduced screw stresses by 23.8 and 22.2% in right and left axial rotation than the traditional bilateral pedicle screw system, while titanium rod stresses were reduced by 9.6, 3.7, 9.6, and 2.9% in flexion, left and right lateral bending, and right axial rotation, respectively, and L5 upper endplate stresses were reduced by 35.5, 18.9, 38.4, 10.2, and 48.3% in flexion, left and right lateral bending, and left and right axial rotation, respectively. The spinal range of motion (ROM) of the M3 internal fixation system was less than that of the M1 and M2 internal fixation systems in left lateral bending, left lateral rotation, and right axial rotation, and the intact vertebral ROM was reduced by 93.7, 94.9, and 90.9%, respectively. The double bent rod structure of the spinal internal fixation system has better biomechanical properties, which can effectively reduce the risk of screw breakage, loosening, cage subsidence, and endplate collapse after fusion surgery.
PMID:37652157 | DOI:10.1080/10255842.2023.2245517
The London Spine Unit : best recognised spinal centre on Harley Street UK
Read the original publication:
Biomechanical evaluation and optimal design of a pedicle screw with double bent rods internal fixation system based on PE-PLIF fusion
