Abstract: A device and method are provided for evaluating and relieving the symptoms associated with joint disorders. The cannula device has two channels extending from the proximal end to the distal end. The first is used to retain an arthroscope; the second, an optical fiber for transmitting laser radiation. In a particular embodiment, the device may be used for performing surgical procedures within a temporomandibular joint space including, but not limited to, releases, myotomies, and coagulation. This arrangement permits the collocation of the visualizing and surgical implements, obviating the need for triangulation by the surgeon. A third channel is provided for the introduction of irrigating fluid into the joint space. The method disclosed includes inserting the cannula into the joint space, inserting the arthroscope and fiber into their respective channels, and positioning them to perform the desired procedure.