Material and Methods: Twenty eight of different breed, sex, age and weight of the dogs with lameness of right, left or both stifle were evaluated. In the operation, 2.7 mm in 00 and 300 arthroscopic telescopes, Storz cold light source, was used. 19-gauge needle was inserted into the joint from left or right sides of patellare ligament. 10-20 mL of isotonic saline or sodium lactate ringer's solution was given into the joint capsule. 0.5 cm of skin incision was made of patellar lig. laterally. Sharp-tipped obturator directed into the joint was passed medially between the patella and femoral condyle. Stifle joint examination was started femorotibialis launch of the medial compartment. The medial femoral condyle, medial meniscus, medial tibial plateau, meniscal ligament and synovial membrane were examined. Intercondylar space, and then cranial cruciata lig. were evaluated.

Results: Twenty eight joints (100%) was encountered with varying degrees of synovial hyperplasia. Eight joints (28.5%) of periarticular osteophytes, three joints (10.7%) meniscus in the horizontal tears, 17 articular (60.7%) of the anterior cruciate ligament partial tears, the third joint (10.7 %) cartilage degeneration, osteophytes were shown in 4 cases. Chip fractures were observed in two joint (7.1 %).

Conclusions: Arthroscopic application in the diagnosis and treatment of stifle joint is a method of providing enhanced visuals. Magnifies the anatomy and pathological changes of intra-articular structures that enable us to retrieve information about a minimally invasive application.