A traumatic etiology of mechanical injury, trophic and degenerative changes are common etiopathogenesis of cranial cruciate ligament injury in cats. The aim of the study was to assess the usage of the authors own design triangular saw guide for surgery of the cranial tibial wedge osteotomy in feline patients. Cranial tibial wedge osteotomy procedures were performed in 10 cats of both genders. The appliance of a triangular saw guide and modified technique ensures meticulous orthogonal incision in the course of the cranial tibial wedge osteotomy and enables achieving a levelling of the tibial plateau precisely, reducing cortical damage and significantly decreasing the surgical time. It provides an adequate environment for bone union within three months post operatively.