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Fracture healing in rabbits after osteotomy using the CO2 laser.

Fracture healing was studied in 28 rabbits after their femurs had been osteomized using the carbon dioxide laser. Twenty rabbits whose femurs were osteotomized by means of a Gigli saw served as the control group. Fracture healing was initially delayed in the laser cut femurs, yet after 60 days no significant difference between the groups could be detected. The initial delay was caused by thermal damage to the laser cut bone edges. Further fragmentation of the damaged bone occurred during the immediate postoperative period.