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Spinal Cord Injury ll: Pathophysiology

Spinal Cord Injury ll: Pathophysiology

Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...

The Spinal Cord

The Spinal Cord

The spinal cord is the body’s major nerve tract of the central nervous system, communicating afferent sensory information from the periphery to the brain and efferent motor information from the brain to the body. The human spinal cord extends from the hole at the base of the skull, or foramen magnum, to the level of the first or second lumbar vertebra.

Secondary Spinal Cord Injury llI: Pathophysiology

Secondary Spinal Cord Injury llI: Pathophysiology

Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...

Spinal Cord

Spinal Cord

The spinal cord, a critical component of the central nervous system, extends from the base of the brainstem to the lumbar region of the vertebral column. It is essential for maintaining physical stability and facilitating communication between the brain and peripheral parts of the body.

Spinal Cord: Cross-sectional Anatomy

Spinal Cord: Cross-sectional Anatomy

The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...

Spinal Cord: Information Processing

Spinal Cord: Information Processing

The spinal cord is an integral hub for motor and sensory information that enables the brain to communicate with the peripheral nervous system (PNS). This communication consists of relaying sensory data and transmission of motor commands.
Sensory Information Processing
Sensory information processing begins at the sensory receptors located in the skin and other tissues, which detect somatic sensory stimuli such as touch, temperature, or pain. These receptors function as catalysts, initiating...

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Related Experiment Video

Updated: Jul 5, 2026

Experimental Strategies to Bridge Large Tissue Gaps in the Injured Spinal Cord after Acute and Chronic Lesion

Experimental Strategies to Bridge Large Tissue Gaps in the Injured Spinal Cord after Acute and Chronic Lesion

Published on: April 5, 2016

Spinal cord repair: bridging the divide.

Poonam Verma¹, Guillermo Garcia-Alias, James W Fawcett

¹Cambridge University Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, United Kingdom. poonamverma@doctors.org.uk

Neurorehabilitation and Neural Repair

|May 20, 2008

Summary

Spinal cord injuries often result in lifelong disability despite advances in neuroscience. Continued research into molecular and cellular repair processes is crucial for restoring function and improving patient recovery outcomes.

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Combining Peripheral Nerve Grafting and Matrix Modulation to Repair the Injured Rat Spinal Cord

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Transplantation of Schwann Cells Inside PVDF-TrFE Conduits to Bridge Transected Rat Spinal Cord Stumps to Promote Axon Regeneration Across the Gap

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Published on: November 3, 2017

Area of Science:

Neuroscience
Cell Biology
Spinal Cord Injury Research

Background:

The spinal cord is a complex central nervous system organ coordinating movement and sensation.
Advances in neuroscience and cell biology improve survival rates for brain and spinal cord injuries.
Despite progress, complete structural and functional repair of spinal cord injuries remains a significant challenge, leading to lifelong disability.

Purpose of the Study:

To review the molecular and cellular processes involved in central nervous system injury evolution.
To highlight promising therapies for restoring disrupted neural connections.
To discuss the potential of combined therapies with supportive care for long-term recovery.

Main Methods:

Review of current literature on spinal cord injury molecular and cellular mechanisms.
Analysis of emerging therapeutic strategies targeting neural repair.
Synthesis of findings to inform future research directions.

Main Results:

Spinal cord injuries trigger complex molecular and cellular responses.
Several promising therapeutic approaches are being investigated to promote neural regeneration.
Restoring disrupted connections is key to functional recovery.

Conclusions:

Understanding the molecular and cellular basis of spinal cord injury is essential for developing effective treatments.
Combination therapies integrating novel approaches with rehabilitation show potential for significant patient recovery.
Further research is critically needed to overcome the challenges of spinal cord repair and mitigate lifelong disability.