Anatomical evaluation of the cross-sectional area of the tendons of the distal forelimb of donkeys (Equus asinus) used for traction

Abstract

Objective: To perform an anatomical and radiographic study of the cross-sectional area of the main lendotls of the distal forelimb, aiming to contribute 10 clinical and surgical practice and 10 understand the greater resistance of these animals 10 lesions When compared to horses. Material and Method: The forelimb of 15 donkeys of different genderand age were studied. Mean bodyweight was 150kg and the animals were fed large volume meals and used for traction. After removal of the limbs, a lateromedial radiographic projection was obtained. The anatomical specimens Were then fixated in 10%formalin solution and the tendotls were dissected. The width and thickness ofthe tendons ofthe superficial and deep digital muscles and ofthe suspensory ligament were l1leasured with a pair of callipers (precision 0,05mm) in seven pre-detennined areas. Results and Conclusions: The greater values of cross-sectional area documented in the superficial digital flexor tendon, deep digital flexor tendon and suspensory ligament were coincident With points of greater articular stress. The values of cross-sectional area obtained exceeded those documented for the average population, due to chronic inflammatory processes caused by the heavy work performed by these animals. This characterizes great adaptation of the locomotor apparatus to work demands and the resistance of donkeys to lesions of related structures.