Intraspecific anatomical variations of the extensor tendons of the carpus and digits with a reexamination of their insertion sites in the domestic dog (Canis lupus familiaris): a cadaveric study ...

• Main Authors: Kamali, Younes, Almasi, Reyhaneh, Moradi, Hamid Reza, Fathollahi, Saeid
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2023
• Subjects: Biophysics; Medicine; Microbiology; FOS Biological sciences; Physiology; Evolutionary Biology; Environmental Sciences not elsewhere classified; Ecology; Sociology; FOS Sociology; Canis lupus
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.6872934; https://springernature.figshare.com/collections/Intraspecific_anatomical_variations_of_the_extensor_tendons_of_the_carpus_and_digits_with_a_reexamination_of_their_insertion_sites_in_the_domestic_dog_Canis_lupus_familiaris_a_cadaveric_study/6872934

Abstract Background The aim of the current study was to investigate the frequency of variations of the extensor tendons of the carpus and digits in the domestic dog (Canis lupus familiaris) with a reexamination of their insertions as well as the morphometric measurements of the tendons and the brachioradialis muscle. In total, we investigated 68 paired thoracic limbs of the domestic dog (16 females and 18 males) which were fixed in a 10% formalin solution. Results The extensor carpi radialis (ECR) tendons showed striking variations in both splitting and insertion sites. In 4.4% of dissections, ECR had three tendons. Of these tendons, the extra tendon either attached independently on the fourth metacarpal bone (one right) or joined its counterpart tendon at the distal end (cross-connections) (one bilateral). It is worth mentioning that one of the ECR tendons split into two or three slips which inserted on the first, second, third, or fourth metacarpal bone in 11 (16.2%) of the specimens. In addition, we found ...