[Capacity for peripheral nerve regeneration. Experimental study--preliminary results].

Area of Science:

• Neuroscience
• Regenerative Medicine
• Surgical Innovation

Background:

• Peripheral nerve injuries can lead to significant functional loss due to degenerative reactions.
• Nerve regeneration strategies include direct suture, nerve grafting, and muscle neurotization.

Purpose of the Study:

• To experimentally evaluate sciatic nerve degeneration and regeneration in rats.
• To compare the efficacy of different nerve repair techniques: no suture, direct suture, nerve grafting, and muscle neurotization.

Main Methods:

• Sciatic nerves of rats were surgically treated using four groups: no suture, direct suture, nerve grafting, and muscle neurotization.
• Nerve samples were analyzed using optical microscopy at 8 and 16 weeks post-surgery.
• Evaluation focused on nerve degeneration, axonal growth, and neuromuscular regeneration, with cholinesterase testing for neuromuscular synapses.

Main Results:

• Group 1 showed nerve degeneration.
• Group 2 demonstrated axonal growth following direct suture.
• Group 4 indicated potential for neuromuscular regeneration through muscle neurotization, requiring further synaptic confirmation.

Conclusions:

• Direct suture and nerve grafting show potential for peripheral nerve repair and axonal regeneration.
• Muscle neurotization presents a promising avenue for neuromuscular regeneration, necessitating further investigation of synaptic connections.