Skeletotopic landmarks of the points of fixation of the quadriceps femoral muscle in representatives of canids

Abstract

The article presents skeletotopic landmarks of the points of fixation of the quadriceps femoral muscle in representatives of Canidae (shalayka and domestic dog), which are absent in the available literature. Thus, it was revealed that the straight head in the distal part of the shalaika is attached to the base of the cranial surface of the kneecap by tendon fibers, and in the domestic dog its muscle-tendon fixation was found. The research was carried out at the Department of Anatomy and Histology of Animals named after Professor A. F. Klimov of the Moscow State Academy of Veterinary Medicine and Biotechnology – MBA named after K. I. Scriabin. The material for the research was sectional material - pelvic limbs (n=16), selected from adult dogs and canine hybrids (shalayka), without external signs of musculoskeletal system pathologies. The methods of fine macro- and microanatomic dissection under the control of a Micromed HR 350 S binocular magnifier were used, followed by functional analysis of the studied structures and skeletotopic projection of muscle attachment points on the kneecap. When studying the structures located on the kneecap, it was found that the cranial head of the tailor's muscle and the wide fascia of the thigh, covering the cranial surface of the kneecap, connects to the underlying organs through loose connective tissue. However, at the top of the cranial tubercle, they closely fuse with the tendon of the rectus femoris muscle, as well as directly with the periosteum of the cranial tubercle of the kneecap, and then, covering the rectus ligament of the kneecap, continue into the fascia of the lower leg.