What defines a syrinx in relation to the spinal cord?

A syrinx is characterized as a fluid-filled cavity that develops within the spinal cord. This cavity can expand over time, leading to potential damage to the surrounding spinal cord tissue and disruption of normal neural function. A syrinx typically originates due to conditions that cause spinal cord compression or injury, such as Chiari malformation, trauma, or inflammation. As the cavity forms, it can impose pressure on adjacent nerve fibers and disrupt the transmission of signals, which may lead to symptoms such as pain, weakness, or sensory changes.

Understanding the definition and implications of a syrinx is critical for those involved in neurophysiological monitoring or spinal surgery, as recognizing its presence and potential effects on neural structures can direct appropriate intervention and management strategies during operative procedures.