Effects of holmium:YAG laser on equine articular cartilage and subchondral bone adjacent to traumatic lesions

Michael A. Collier D.V.M.; L. Mark Haugland D.V.M.; Janine Bellamy D.V.M.; Lanny L. Johnson M.D.; Michael D. Rohrer; Robert C. Walls M.D.; Kenneth Eugene Bartels D.V.M.

doi:10.1117/12.184879

7 September 1994 Effects of holmium:YAG laser on equine articular cartilage and subchondral bone adjacent to traumatic lesions

Michael A. Collier D.V.M., L. Mark Haugland D.V.M., Janine Bellamy D.V.M., Lanny L. Johnson M.D., Michael D. Rohrer, Robert C. Walls M.D., Kenneth Eugene Bartels D.V.M.

Author Affiliations +

Proceedings Volume 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV; (1994) https://doi.org/10.1117/12.184879
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The effects of Ho:YAG laser energy on articular cartilage and subchondral bone adjacent to traumatically created cartilage lesions in a continuous weight-bearing model were investigated. The 2.1 micrometers wavelength was delivered in hand-controlled contact and near-contact hard tissue arthroscopic surgery in a saline medium. Bilateral arthroscopy was performed on normal antebrachiocarpal and intercarpal joints of four adult horses. One-hundred twenty traumatic lesions were created on three weight-bearing articular surfaces with a knife, curette, or a motorized burr. Depths of the lesions were partial and full thickness. Configurations of the lesions were lacerations, scrapes, and craters. Left limbs were used as controls. Right limb lesions were treated with various intensities of laser energy. Animals were sacrificed at intervals of 1, 3, and 8 weeks. Gross microscopic anatomy was documented, and tissue sections were subjected to blind review by a pathologist. Mankin grading for cellularity and proteoglycan content was used to qualitatively evaluate cartilage response. Cartilage adjacent to all lesions exposed to laser energy had better cellularity and proteoglycan content than corresponding controls by Mankin grading.

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Michael A. Collier D.V.M., L. Mark Haugland D.V.M., Janine Bellamy D.V.M., Lanny L. Johnson M.D., Michael D. Rohrer, Robert C. Walls M.D., and Kenneth Eugene Bartels D.V.M. "Effects of holmium:YAG laser on equine articular cartilage and subchondral bone adjacent to traumatic lesions", Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994); https://doi.org/10.1117/12.184879

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