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Fracture dislocation of thoracolumbar junction — Clinical Guidelines

Overview

Fracture dislocation at the thoracolumbar junction involves complex injuries to the vertebral body and potentially adjacent intervertebral discs, necessitating careful stabilization to prevent kyphosis and neurological deficits. 1 3 5 10

Diagnosis

Imaging: CT and MRI essential for assessing fracture type (e.g., burst, compression), endplate injuries, and disc involvement. 2 8 10

Classification: Utilize Magerl classification for type A fractures to guide management decisions. 10

Grading: Evaluate severity through vertebral body height loss, Cobb angle, and neurological status. 5 9

Management

Surgical Fixation:

- Short Segment Fixation: Traditional four-screw fixation; six-screw fixation (including intermediate screws) may enhance stability, particularly in severe fractures. 1 4 5 - Long Segment Fixation: Offers better mechanical performance in reducing Cobb angle and maintaining vertebral height compared to short segment fixation. 4 5

Techniques:

- Minimally Invasive: Unilateral biportal endoscopic (UBE) technique combined with percutaneous transpedicular screws for nerve decompression and fracture reduction. 3 - Bone Grafting: Transpedicular bone grafting, potentially aided by vertebroplasty tools, to restore vertebral height and stability. 6

Postoperative Care: Monitor for adjacent segment degeneration and neurological recovery. 9 7

Special Populations

Elderly: Consider bone quality and potential comorbidities affecting surgical outcomes; long segment fixation may offer better stability despite increased complexity. 5

Pediatrics: Limited data; conservative or minimally invasive approaches preferred to preserve growth potential. 5

Comorbidities: Tailor fixation strategy based on patient-specific factors; long segment fixation may mitigate risks in complex cases. 5

Key Recommendations

Use Six-Screw Fixation with Intermediate Screws for severe thoracolumbar fractures to enhance biomechanical stability and reduce kyphosis recurrence. (Evidence: Moderate 1 4)

Opt for Long Segment Fixation when possible, as it demonstrates superior mechanical performance in maintaining vertebral alignment and reducing Cobb angle compared to short segment fixation. (Evidence: Moderate 4 5)

Incorporate Minimally Invasive Techniques such as UBE for patients requiring nerve decompression and fracture reduction to minimize trauma and optimize recovery. (Evidence: Weak 3)

Monitor and Address Adjacent Segment Degeneration post-surgery, particularly in long-term follow-up, to manage potential complications effectively. (Evidence: Expert opinion 9)

References

1 Xu C, Bai X, Ruan D, Zhang C. Comparative finite element analysis of posterior short segment fixation constructs with or without intermediate screws in the fractured vertebrae for the treatment of type a thoracolumbar fracture. Computer methods in biomechanics and biomedical engineering 2024. link 2 Yu Q, Chen K, Guo Z, Han Y, Su L, Lei C et al.. Effect of Different Injury Morphology of the Endplate on Intervertebral Disc Degeneration: Retrospective Cohort Study. Orthopaedic surgery 2024. link 3 Tian D, Zhong H, Zhu B, Chen L, Jing J. Unilateral biportal endoscopic technique combined with percutaneous transpedicular screw fixation for thoracolumbar burst fractures with neurological symptoms: technical note and preliminary report. Journal of orthopaedic surgery and research 2023. link 4 Xu J, Yin Z, Li Y, Xie Y, Hou J. Clinic choice of long or short segment pedicle screw-rod fixation in the treatment of thoracolumbar burst fracture: From scan data to numerical study. International journal for numerical methods in biomedical engineering 2023. link 5 Ma ML, Dong H, Yu H, Ruan BJ, Xu XH, Tao YP et al.. Comparison of different segments in the fixation of thoracolumbar fractures: a Bayesian network meta-analysis. Injury 2022. link 6 Wen Y, Zhou H, Liao Y, He Y, Wang F, Li J. Posterior pedicle screw fixation combined with transpedicular bone grafting for treatment of single-level thoracolumbar fractures with the aid of a vertebroplasty tool. The Journal of international medical research 2022. link 7 Wang S, Duan C, Yang H, Kang J, Wang Q. Wiltse Approach Versus Conventional Transforaminal Interbody Fusion for Unstable Thoracolumbar Fracture with Intervertebral Disc Lesions. Orthopaedic surgery 2022. link 8 Su Y, Ren D, Liu D, Li J, Wang T, Qi W et al.. Effects of endplate healing morphology on intervertebral disc degeneration after pedicle screw fixation for thoracolumbar fractures. Medicine 2021. link 9 Shi Z, Wang G, Jin Z, Wu T, Wang H, Sun J et al.. Use of the sagittal Cobb angle to guide the rod bending in the treatment of thoracolumbar fractures: a retrospective clinical study. Journal of orthopaedic surgery and research* 2020. link 10 Barut N, Marie-Hardy L, Bonaccorsi R, Khalifé M, Pascal-Moussellard H. Immediate and late discal lesions on MRI in Magerl A thoracolumbar fracture: Analysis of 76 cases. Orthopaedics & traumatology, surgery & research : OTSR 2019. link

Fracture dislocation of thoracolumbar junction