Morphological changes of the sesamoid bone in cattle with arthrosis of the hoof joint

The prevalence of finger joint pathologies in dairy cattle in conditions of intensive animal husbandry requires the search for a scientifically based approach to the study of diseases of the distal extremities using data from morphological studies. This is necessary to improve methods for the prevention and diagnosis of limb pathologies in cattle and is due to the fact that destructive changes in this anatomical region led to systemic failures in the body and are accompanied by a decrease in animal productivity. However, not all aspects of the pathogenesis of arthrosis of the finger joints in cows are currently studied. The purpose of the work is to provide data on the morphological changes of the sesamoid bones of the 3rd phalanx, their ligaments and bone-ligament connections in cows of the milk direction of productivity. Isolated acropodies from 20 cows of holstinized cows of 4 years old were studied. The sectional material was anatomically dissected, and the hoof joints of the 3 and 4 fingers were examined, focusing on the sesamoid bones of the 3 phalanges. Joint surfaces of sesamoid bones and areas of osseousligamentous connections and proximal and distal ligaments were subjected to histological examination according to a generally accepted technique. Micro preparations were examined using Jenamed-2 and MicroScreen microscopes. As a result of the studies, original data were obtained on destructive changes in the articular surface of the sesamoid bones of the third phalanx, as well as bone-ligament connections and ligaments, which complement the idea of the depth and prevalence of the pathological process in arthrosis of the ungulate joint in cows of the milk direction of productivity.

1. Marin, E. M. Characteristics of Orthopedic Pathologies in Cattle / E. M. Marin, V. A. Ermolaev, O. N. Marin, and I. S. Raksina // Bulletin of the Ulyanovsk State Agricultural Academy. - 2012. - No. 4. - Pp. 66- 69.

2. Pozyabin, S. V. Comparative Characteristics of the Structure of Orthopedic Pathologies in Holstein-Friesian and Holsteinized Black-and-White Cows / Pozyabin S. V., Filippov Yu. I., M. D. Kachalin, V. V. Belogurov, and M. S. Borisov // Veterinary Medicine, Animal Husbandry, and Biotechnology. - 2018. - No. 11. - Pp. 19-24.

3. Volotko, I. I. Prevention and Treatment of Diseases of the Distal Limb of Cows / I. I. Volotko, A. N. Bezin, N. I. Butakova // Izvestiya of the Orenburg State Agrarian University. – 2014. – No. 5(49). – Pp. 96-98. – EDN TBRQIX.

4. Bystrova, I. Yu. Biophysical properties of hoof horn and formation of cattle hooves under the influence of genetic and technological factors: specialty 06.02.04 "Veterinary Surgery" : dissertation for the degree of Doctor of Agricultural Sciences / Bystrova Irina Yurievna. – Ryazan, 2008. – 291 p. – EDN NQLCPH.

5. Belogurov, V.V. Molecular and Metabolic Changes in Dairy Cows with Hoof Pathologies / Belogurov V.V., Pozyabin S.V., Azarnova T.O., Kachalin M.D. Veterinary Medicine, Animal Husbandry, and Biotechnology // 2025. - No. 3. - Pp. 31-40. DOI: 10.36871/vet.zoo.bio.202503104.

6. Suvorova, E. S. Analysis of the prevalence of hoof lesions in cattle in an industrial complex / E. S. Suvorova // Days of Student Veterinary Science: Collection of Articles from the I All-Russian Student Scientific and Practical Conference, Kirov, March 01–03, 2022. Volume Issue 1. – Kirov: Vyatka State Agricultural Academy, 2022. – Pp. 106-109. – EDN JZOZZB.

7. Rukol, V. M. Causes of Diseases of the Distal Limb in High-Productive Cows / V. M. Rukol, V. A. Zhurba // Modern Technologies of Agricultural Production: Conference Proceedings, Grodno, Belarus, January 01 – 31, 2009. – Grodno, Belarus: Grodno State Agrarian University, 2009. – Pp. 435-436. – EDN YMBRFF.

8. Kirillov, A. A. Vascularization of the Distal Limb in Cattle / A. A. Kirillov // Hippology and Veterinary Medicine. – 2012. – No. 4 (6). – Pp. 71-75. – EDN PYCMVP.

9. Gorbunov, P. A. Orthopedic lesions in cattle on a dairy farm / P. A. Gorbunov, E. I. Lykova, D. A. Burov // Current state and prospects of development of veterinary and animal science: Materials of the All-Russian Scientific and Practical Conference with international participation, Cheboksary, October 29, 2020. – Cheboksary: Chuvash State Agrarian University, 2020. – P. 236- 242. – EDN NRSBQX.

10. Stekolnikov, A.A. Limb diseases in cattle under intensive livestock farming, ways of prevention and treatment / A.A. Stekolnikov // Actual problems of veterinary surgery. Materials of the International Conference. - Ulyanovsk: UGAHA, 2011. - Pp. 3- 7.

11. Pozyabin, S.V. Combined pathologies of the distal part of the limbs in dairy cows / S. V. Pozyabin, E. N. Borkhunova, V. V. Belogurov, M.D. Kachalin, T.O. Azarnova, M.A. Kuznetsova, I.D. Lyaskovsky, E. K. Gasanguseynova // International Bulletin of Veterinary Medicine. - 2024. - No. 2. - Pp. 372-371. DOI: 10.52419/issn2072-2419.2024.2.362.

12. Borisevich, V. B. Deformation of Hooves in Cattle. Anatomical, Histological, Histochemical, Clinical, and Pathological Anatomical Research: Dissertation of Doctor of Veterinary Sciences / V. B. Borisevich. - Kiev, 1983.