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  • Title: Laser-activated solid protein bands for peripheral nerve repair: an vivo study.
    Author: Lauto A, Trickett R, Malik R, Dawes JM, Owen ER.
    Journal: Lasers Surg Med; 1997; 21(2):134-41. PubMed ID: 9261790.
    Abstract:
    BACKGROUND AND OBJECTIVE: Severed tibial nerves in rats were repaired using a novel technique, utilizing a semiconductor diode-laser-activated protein solder applied longitudinally across the join. Welding was produced by selective laser denaturation of solid solder bands containing the dye indocyanine green. STUDY DESIGN/MATERIALS AND METHODS: An in vivo study, using 48 adult male Wistar rats, compared conventional microsuture-repaired tibial nerves with laser solder-repaired nerves. Nerve repairs were characterised immediately after surgery and after 3 months. RESULTS: Successful regeneration with average compound muscle action potentials of 2.5 +/- 0.5 mV and 2.7 +/- 0.3 mV (mean and standard deviation) was demonstrated for the laser-soldered nerves and the sutured nerves, respectively. Histopathology confirmed comparable regeneration of axons in laser- and suture-operated nerves. CONCLUSION: The laser-based nerve repair technique was easier and faster than microsuture repair, minimising manipulation damage to the nerve.
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