Bases anatômicas para a desmotomia patelar medial no tratamento da fixação dorsal da patela em bovinos.

Abstract

The dorsal fixation of the patella is a joint locomotor pathology affecting large animals. The displacement can be unilateral or bilateral, temporary or permanent and has no gender preference and although there was no great risk of death to the animal, can cause serious economic losses to the owners. As the main form of treatment for this pathology we have desmotomy patellar medial. Which is the section of the medial patellar ligament, knee anatomy knowledge and the location of the patellar ligaments and nearby structures are essential for success in performing the technique, the goal this study was know the anatomy and thereby indicate the safest point for holding the desmotomy patellar in cattle, were palpated, dissected and measured the patellar ligaments ten knees bovines donated by the animal pathology laboratory UFCG. For point determination insurance realization of desmotomy were considered: the route of each ligament from its origin to its insertion and the length, width and thickness of each of the ligaments. The points of origin and ligament insertion are important to prevent other nearby structures may be damaged during the procedure; the length, width and thickness are important to determine the that height must be made the incision on ligament, the length of it and the appropriate depth for which occurs complete rupture of the ligament. The medial patellar ligament submitted a length median 11.7 cm, a similar width of the patellar ligament intermediate with 1.8 cm and a thickness smaller than the others with 0.3 cm. The proposed point for safe desmotomy was approximately 2 to 3 cm above the insertion site, 2.5 cm long, with a depth of approximately 0.4 cm immediately after the touch scalpel tip the ligament.