Radius And Ulna Anatomy Dog

Ulna and the radius are two bones that sit next to each other. They are the radius bone and the ulna bone.

Dog Thoracic Limb

Its lower end tapers to a point.

Radius and ulna anatomy dog. The greater tubercle is not separated into two parts like in other species. The humerus is the long bone of the forearm articulating with the scapula to form the shoulder and the radius and ulna to form the elbow. In the horse only the upper portion of the ulna is present.

In the dog and cat the ulna extends down to the wrist and is not fused to the radius. The antebrachium comprises two bones the radius and ulna which cross one another in the frontal plane as they extend from the elbow joint proximally to the carpus distally figure 55 1. They ensure that the elbow functions perfectly.

A dog s forelimb has two bones that stretch between the wrist and the elbow joint. Fractures of these bones are frequently encountered in veterinary medicine. In the horse the ulna is fused back to the radius.

The ulna bone is not a weight bearing bone but it s still important to the elbow. In situ it lies obliquely along the ventral thorax and is more horizontal in larger species. These fractures are usually the result of trauma but can be caused by disease of the bone itself.

The ulna bone supports 20 of the animal s weight. The following radiographs are the mediolateral and craniocaudal views of the left radius and ulna of a seven month old mixed breed. Because of the conformation of the forearm both bones the radius and ulna usually fracture at the same time.

Canine radius and ulna example 1. Ulna is the longest bone of the dog s body. Proximally the radius articulates with the ulna along its caudal border which rests within a corresponding concavity in the ulna called the radial notch.

The wrist is the lower joint below the elbow. The upper ends of the radius and ulna bones connect with the lower end of the humerus bone to form the dog s elbow joint. The radius and ulna are the two bones that comprise the forearm.

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