The microarchitecture of the tissues of the shoulder joint in dogs
Up to the present time practically not studied the peculiarities of formation of cartilage inthe various compartments of the shoulder joint in dogs, as well as zones of least resistancejoints in General. Available studies mainly use visual diagnostic methods, without applyingmorphological and morphometric. There is no information about age-related cytomorphologicaltransformations occurring in the joint in normal and pathological conditions. In this regard,the aim of our study was to determine the zone of risk of damage to the shoulder joint in dogs.Studies were conducted on dogs and cadaver material, selected from giant, large and mediumsized breeds. Arthroscopic studies of dogs were performed, as well as light microscopy ofhistological sections of freshly treated samples of joint tissues. As a result of trauma to the jointis transformed physiological synovial folds in sklerozirovanie a pathological form that occurs inGerman shepherd dogs over 5 years of age in 60% of cases. The process of mineralization of thematrix and the appearance of multiple foci of ossification occurs asynchronously in the cartilageof the head of the humerus and the articular cavity of the scapula. Osteoplastic processes in thearea of articulation occur unevenly. Cartilage coating of the articular surface of the shoulderblade is characterized by a more uniform distribution than the articular rotation of the humerushead. The zones of risk of damage to the structures of the shoulder joint in dogs were determined.These include: cranial and medial compartments of the joint, the caudal area of the cartilaginouscoating of the humerus, the caudal area of the articular surface of the scapula cavity. The dataobtained make up for the information about the diagnosis and risk factors in the developmentof shoulder joint pathologies in dogs of large and giant breeds. They should be used in clinicaldiagnosis and surgery of the musculoskeletal system in animals.