Cranial Cruciate Ligament Rupture in Dogs - Evaluation of Postoperative Results of the CBLO Technique

Abstract

A major cause of osteoarthritis (OA) in dogs is cranial cruciate ligament (CCL) rupture. Currently, many intra- and extra-articular treatment techniques are used for dogs with CCL tears. However, biomechanically based methods (Tibial Plato Levelling Osteotomy-TPLO, Tuberositas Tibia Advancemet -Standard TTA, TTA-Rapid) are often preferred. It has been suggested that it may be an alternative technique to prevent complications of the most commonly used TPLO, TTA and TTA-Rapid. The aim of this study was to evaluate the post-operative results of the Cora Base Levelling Osteotomy (CBLO) technique in dogs with cranial cruciate ligament (CCL) rupture. Materials, Methods & Results: Ten dogs of different breeds, ages and weights were used as material. The operation was started from the medial surface of the tibia. The injector needles were used to locate the joint for placement of the biradial saw. The medial collateral ligament was visualised. The popliteal muscle was reflected and the popliteal artery was protected. The osteotomy was stopped when 1/3-1/2 complete and the appropriate millimetre measurements were marked for osteotomy rotation. In the pre-operative planning, D1, the distance from the patellar tendon to the tibia, D2 and the caudal extension of the area where the saw was placed. The osteotomy was started. The osteotomy was completed, the desired rotation achieved and maintained with a stabilising pin. The plate was fixed. The bone plates used were a standard 3.5 mm CBLO (Intrauma, Fixin, Italy) and in some cases a wide TPLO plate. Progress in walking and running tests was noted in 7 cases (70%) compared to the preoperative period.