Abstract
We applied the laser irradiation on meniscus with the saline filled knee joint in order to prevent the several complication caused by the laser irradiation with the air filled knee joint. The experiment was made in vitro with the pig knee joint, with Ar+UV laser which we have regarded suitable laser for the arthroscopic laser meniscectomy, and with SiO2 glass fiber which can deliver Ar+UV laser light. A pig knee joint was opened and ACL, PCL, MCL, LCL were cut off so as to expand the pig knee joint space. Under arthroscope contact irradiation on meniscus in saline using Ar+UV laser at the power density of 800 W/cm2 was done, and meniscus was perforated in several seconds irradiation. These experiment revealed that contact irradiation in saline using Ar+UV laser is useful for arthroscopic laser meniscectomy.
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