Ultrasound-guided hydrorelease/hydrodissection reduces gliding resistance in a rat sciatic nerve adhesion model : a...

Area of Science:

• Regenerative Medicine
• Biomedical Engineering
• Surgical Innovation

Background:

• Ultrasound-guided nerve hydrodissection (HD), also known as hydrorelease (HR), is used for peripheral nerve entrapment.
• Its mechanical effects on nerve mobility under perineural adhesions require further understanding.
• This study investigates HD/HR's efficacy in improving nerve gliding.

Purpose of the Study:

• To establish a mild rat sciatic nerve adhesion model.
• To evaluate ultrasound-guided HR/HD's effect on nerve gliding.
• To assess if HR/HD impairs nerve function.

Main Methods:

• A rat sciatic nerve adhesion model was created and characterized by macroscopic assessment and tensile strength measurements.
• Nerve function was evaluated using nerve conduction studies.
• Ultrasound-guided HR/HD was performed using saline, followed by reassessment of adhesion and tensile strength.

Main Results:

• Adhesions progressed over 6 weeks, increasing tensile strength significantly.
• Nerve function remained comparable between adhesion and control sides.
• Ultrasound-guided HR/HD significantly reduced nerve-to-bed tensile strength.

Conclusions:

• Ultrasound-guided HR/HD enhances nerve gliding in a rat model of mild perineural adhesions.
• The procedure improved mechanical mobility without compromising nerve function.
• HR/HD shows promise as a minimally invasive treatment for conditions involving perineural adhesions.