Posterior Fixation for Different Thoracic-Sacrum Alignments Containing a Thoracolumbar Vertebral Fracture: A Finite Element Analysis

Nishida, Norihiro; Suzuki, Hitomi; Jiang, Fei; Fuchigami, Yuki; Tome, Rui; Funaba, Masahiro; Kumaran, Yogesh; Fujimoto, Kazuhiro; Ikeda, Hiroaki; Ohgi, Junji; Chen, Xian; Sakai, Takashi

doi:10.1016/j.wneu.2023.06.137

Cited by 2 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To overcome the limitations of the above surgical approach, many researchers have attempted various alternative procedures [19,20]. Among them, the STV is a recent innovation [21].…”

Section: Discussionmentioning

confidence: 99%

Retrospective Analysis of Three Posterior Open Surgical Approaches for the Intraoperative and Long-term Outcomes in the Treatment of Thoracolumbar Burst Fractures

Wang,

Zhang,

Wang

et al. 2023

Preprint

View full text Add to dashboard Cite

Objective Evaluating the Intraoperative and Long-term Clinical Outcomes of Three Posterior Open Surgical Approaches for the Treatment of Thoracolumbar Burst Fractures. Methods Follow-up observation of 145 patients with thoracolumbar burst fractures treated with three surgical approaches, including “traditional transpedicular four-screw fixation spanning the injured vertebral body (TFSV) (n=38), short-segment transpedicular four-screw fixation through the injured vertebral body (SFTV) (n=53), and six-screw fixation (STV) (n=54)”, at our institution from June 2014 to June 2022. Comparative analysis of perioperative parameters (operative time, intraoperative blood loss, postoperative 24-hour drainage), preoperative and postoperative radiological indices (sagittal plane Cobb angle, Vertebral wedge deformity index), postoperative functional recovery (VAS score, ODI score), and incidence of complications. Results There was no significant difference in general data among the three groups. The SFTV group is superior to the other two groups in perioperative parameters (P＜0.001, P=0.023, P＜0.001). There was significant difference in sagittal plane Cobb angle at each time point among the three groups (P=0.025), but no significant difference in Vertebral wedge deformity index (P=0.299). The improvement of sagittal plane Cobb angle was slightly worse in the group of SFTV. The VAS and ODI scores before and after surgery in each group showed significant improvement (P＜0.001, P＜0.001); however, there were no statistically significant differences between the groups at the same time points (P=0.312, P=0.924). The incisions of all the patients healed at the first stage without any complications. At the end of follow-up, the Cobb angle increased more than 10 degrees in 3 cases (16.67%) in the TFSV group and in 1 case (5.56%) in the SFTV group. Conclusion The treatment of thoracolumbar burst fracture with STV or SFTV is superior to the TFSV, SFTV is better than STV, but the indication of SFTV is limited.

show abstract

“…To overcome the limitations of the above surgical approach, many researchers have attempted various alternative procedures [19,20]. Among them, the STV is a recent innovation [21].…”

Section: Discussionmentioning

confidence: 99%

Retrospective Analysis of Three Posterior Open Surgical Approaches for the Intraoperative and Long-term Outcomes in the Treatment of Thoracolumbar Burst Fractures

Wang,

Zhang,

Wang

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…FE models are commonly used in research to simulate changes in biological structures and characteristics that are difficult to measure, complementing experimental investigations [ 5 , 6 ]. The projected outcomes of the FE model also identify critical experiments that should be carried out [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Head–Neck Kinematics in Rear-End Impact Conditions with Headrest

Wang,

Jiang,

Teo

et al. 2023

Bioengineering

View full text Add to dashboard Cite

A detailed three-dimensional (3D) head–neck (C0–C7) finite element (FE) model was developed and used to dictate the motions of each cervical spinal segment under static physiological loadings of flexion and extension with a magnitude of 1.0 Nm and rear-end impacts. In this dynamic study, a rear-end impact pulse was applied to C7 to create accelerations of 4.5 G and 8.5 G. The predicted segmental motions and displacements of the head were in agreement with published results under physiological loads of 1.0 Nm. Under rear-end impact conditions, the effects of peak pulse acceleration and headrest angles on the kinematic responses of the head–neck complex showed rates of increase/decrease in the rotational motion of various cervical spinal segments that were different in the first 200 ms. The peak flexion rotation of all segments was lower than the combined ROM of flexion and extension. The peak extension rotation of all segments showed variation compared to the combined ROM of flexion and extension depending on G and the headrest angle. A higher acceleration of C7 increased the peak extension angle of lower levels, but the absolute increase was restricted by the distance between the head and the headrest. A change in the headrest angle from 45° to 30° resulted in a change in extension rotation at the lower C5–C6 segments to flexion rotation, which further justified the effectiveness of having distance between the head and the headrest. This study shows that the existing C0-C7 FE model is efficient at defining the gross reactions of the human cervical spine under both physiological static and simulated whiplash circumstances. The fast rate of changes in flexion and extension rotation of various segments may result in associated soft tissues and bony structures experiencing tolerances beyond their material characteristic limits. It is suggested that a proper location and angle of the headrest could effectively prevent the cervical spine from injury in traumatic vehicular accidents.

show abstract

Posterior Fixation for Different Thoracic-Sacrum Alignments Containing a Thoracolumbar Vertebral Fracture: A Finite Element Analysis

Cited by 2 publications

References 27 publications

Retrospective Analysis of Three Posterior Open Surgical Approaches for the Intraoperative and Long-term Outcomes in the Treatment of Thoracolumbar Burst Fractures

Retrospective Analysis of Three Posterior Open Surgical Approaches for the Intraoperative and Long-term Outcomes in the Treatment of Thoracolumbar Burst Fractures

Finite Element Analysis of Head–Neck Kinematics in Rear-End Impact Conditions with Headrest

Contact Info

Product

Resources

About