Microsurgical neurolysis: its anatomical and physiological basis and its classification

Area of Science:

• Neurosurgery
• Peripheral Nerve Surgery
• Microsurgery

Background:

• Peripheral nerve dysfunction can arise from impaired gliding mechanisms due to adhesions and fibrosis.
• Adequate nerve gliding is essential for adapting to limb positioning and preventing secondary damage.
• The paraneurium and interfascicular epineurium are critical for nerve mobility within surrounding tissues and internally.

Purpose of the Study:

• To define internal neurolysis and its indications.
• To classify degrees of nerve fibrosis and outline corresponding surgical procedures.
• To detail a step-wise approach for neurolysis, emphasizing fascicle decompression.

Main Methods:

• Surgical intervention involving neurolysis to address nerve adhesions and fibrosis.
• Classification system for grading nerve fibrosis.
• Step-wise decompression of fascicles as the primary surgical goal.
• Consideration of gliding tissue flaps for severe, non-regenerative cases.

Main Results:

• Neurolysis effectively decompress fascicles when gliding apparatus is compromised.
• A classification system guides procedural choices based on fibrosis severity.
• The procedure is terminated once fascicle decompression is achieved.
• Gliding tissue flaps offer a solution for intractable cases with poor regeneration.

Conclusions:

• Neurolysis is a crucial intervention for restoring peripheral nerve function compromised by fibrosis.
• A graded approach to neurolysis ensures targeted decompression and functional recovery.
• Innovative techniques like gliding tissue flaps address complex cases, improving patient outcomes.