Macroscopic and microscopic findings after excimer laser treatment of different tissue

In reported tests, the interaction of excimer laser radiation with bone, meniscus, and tendon tissue was observed. Depending on various laser parameters, different tissue reactions were observed in all procedures. Ablation was performed in a liquid medium to ensure extended carbonizations even at low application energy and repetition rate. Our studies revealed that the longer the pulse, the lower the destruction rate of fibers. However, a longer pulse caused lower ablation rates than a shorter one. An increase of repetition rate instead of an increase of application energy resulted in higher heat accumulation in the adjacent tissue. Differentiation of the single parameters on various tissue allows flexibility of thermal effects from the laser procedure.