Traumatic Injuries to the Spinal Cord and Peripheral Nervous System

Stiffness-tunable biomaterials provide a good extracellular matrix environment for axon growth and regeneration

Neuronal growth, extension, branching, and formation of neural networks are markedly influenced by the extracellular matrix-a complex network composed of proteins and carbohydrates secreted by cells. In addition to providing physical support for cells, the extracellular matrix also conveys critical mechanical stiffness cues. During the development of the nervous system, extracellular matrix stiffness plays a central role in guiding neuronal growth, particularly in the context of axonal extension, which is crucial for the formation of neural networks. In neural tissue engineering, manipulation of biomaterial stiffness is a promising strategy to provide a permissive environment for the repair and regeneration of injured nervous tissue. Recent research has fine-tuned synthetic biomaterials to fabricate scaffolds that closely replicate the stiffness profiles observed in the nervous system. In this review, we highlight the molecular mechanisms by which extracellular matrix stiffness regulates axonal growth and regeneration. We highlight the progress made in the development of stiffness-tunable biomaterials to emulate in vivo extracellular matrix environments, with an emphasis on their application in neural repair and regeneration, along with a discussion of the current limitations and future prospects. The exploration and optimization of the stiffness-tunable biomaterials has the potential to markedly advance the development of neural tissue engineering.

Traumatic thoracolumbar spondyloptosis of T12-L1 with stable hemodynamics: A case report

INTRODUCTION AND IMPORTANCE

A fracture-dislocation of the vertebral bone is mostly caused by high-energy trauma. Spondyloptosis is the severest form of spondylolisthesis (>100 %) which affects the sagital or coronal plane from the contiguous vertebral bone. Anterior spondyloptosis is known as fracture-dislocation where the proximal part of the vertebra is located infront of the distal vertebrae. Most cases are associated with spinal cord injury (SCI) and unstable hemodynamics, in this case the vital sign of the patient's tend to be stable.

CASE PRESENTATION

A 21-year-old man had multiple traumas after having a traffic injury, pain and numbness were positive during physical examination, especially in both lower limb. A radiography examination shows that the patient had total spinal cord transection and anterior spondyloptosis in T12 until L1 segment. Additional examinations found minimal renal and liver contusion including the ischemic bowel. The interbody fusion procedure was chosen as our therapeutic modalities.

CLINICAL DISCUSSION

We performed open surgical methods by using interbody fusion modalities usually in patient's with stable vital signs. This intervention could be the priority in managing patients with a rare case of anterior spondyloptosis. A visual analog Scale (VAS) was used for monitoring the degree of pain, and Oswestry Disability Index (ODI) questionnaire for evaluating the outcome for low back pain.

CONCLUSIONS

Most traumatic spondyloptosis cases end with neurogenic shock, Due to the injury's rarity and collaborated with minimal soft tissue injury, early diagnosis and the use of an open surgical method may improve patient's outcome.