Interstitial Laser Photocoagulation of Osteoid Osteoma
ILP consists of percutaneous insertion of optical fibers into the tumor. The tumor is coagulated and destroyed by direct heating. With a low-power laser technique, a well-defined coagulation of predictable size and shape can be obtained in the bone tissue. The extent of thermal necrosis has been shown to be dependent on the laser wavelength, the energy deposited, the power used (tip temperature), the thermal and optical properties of the target tissue, and the type of optical fiber used (23,31-33). Compared with the 1604-nm neodymium yttrium aluminum garnet (Nd: YAG) laser, the 805-nm diode laser was able to produce larger diameters of coagulation and charring at both higher and lower energies (31).