Publications by authors named "Pei-Dong Sun"
Article Synopsis
- The study investigates a new surgical method called anterior controllable antedisplacement and fusion (ACAF) for treating severe cervical ossification of the posterior longitudinal ligament (OPLL), comparing its biomechanical stability to traditional approaches like anterior cervical discectomy and fusion (ACDF) and anterior cervical corpectomy and fusion (ACCF).
- Researchers used cadaveric spines to assess pre- and post-surgical range of motion (ROM) through various tests, including flexibility assessments and cyclic loading, to evaluate how these surgical interventions affected spine stability over time.
- Results revealed that all three surgical methods significantly reduced ROM after surgery, with ACCF showing a tendency for greater ROM during fatigue testing,
Objective: To achieve the anatomical evaluation of spinal nerve and cervical intervertebral foramina in anterior controllable antedisplacement and fusion (ACAF) surgery, a novel surgical technique with the wider decompression, through a cadaveric and radiologic study.
Methods: Radiographic data of consecutive 47 patients (21 by ACAF and 26 by anterior cervical corpectomy and fusion [ACCF]) who have accepted surgery for treatment of cervical ossification of the posterior longitudinal ligament(OPLL) and stenosis from March 2017 to March 2018 were retrospectively reviewed and compared between an ACAF group and ACCF group. Three postoperative radiographic parameters were evaluated: the decompression width and the satisfaction rate of decompression at the entrance zone of intervertebral foramina on computed tomography (CT), and the transverse diameter of spinal cord in the decompression levels on magnetic resonance imaging (MRI).
The aim of the present study was to evaluate the biomechanical mechanism of injuries of the thoracolumbar junction by the methods of a backward fall simulation experiment and finite element (FE) analysis (FEA). In the backward fall simulation experiment, one volunteer was selected to obtain the contact force data of the sacrococcygeal region during a fall. Utilizing the fall data, the FEA simulation of the backward fall process was given to the trunk FE model to obtain the stress status of local bone structures of the thoracolumbar junction during the fall process.
View Article and Find Full Text PDFObjective: This study evaluated the biomechanical changes in the adjacent vertebrae under a physiological load (500 N) when the clinically relevant amount of bone cement was injected into fractured cadaver vertebral bodies.
Methods: The embalmed cadaver thoracolumbar specimens in which each vertebral body (T12-L2) had a BMD of < 0.75 g/cm were used for the experiment.
Purpose: We have introduced a novel surgery technique named anterior controllable antedisplacement and fusion (ACAF) for the treatment of ossification of the posterior longitudinal ligament. As reported, the satisfactory postoperative outcome can be attributed to the larger decompression width. However, it may associate with high prevalence of vertebral artery injury (VAI) theoretically.
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