Musculus tensor fasciae antebrachii
The tensor fasciae antebrachii is a thin strap muscle on the caudal surface of the upper arm. It originates from the caudal border of the scapula and the latissimus dorsi tendon and inserts on the olecranon via the antebrachial fascia. Its actions are to tense the forearm fascia and assist elbow extension. It is innervated by the radial nerve (roughly C7-T1). It works with the triceps group.
Origin: Caudal border of the scapula and latissimus dorsi tendon
Insertion: Olecranon via the antebrachial fascia
Action: Tenses the forearm fascia; assists elbow extension
Innervation: Radial nerve (C7-T1)
Isolated injury is uncommon. Relevant mainly as an assistant to the triceps in elbow extension.
## Overview Radial nerve paralysis results from damage to the nerve that innervates the extensors of the elbow, carpus, and digit. Common causes are prolonged lateral recumbency during anesthesia or
Not a structure of primary practical concern for owners under normal circumstances.
## Overview Radial nerve paralysis results from damage to the nerve that innervates the extensors of the elbow, carpus, and digit. Common causes are prolonged lateral recumbency during anesthesia or humeral fracture. The horse has a dropped elbow, cannot extend the limb, knuckles at the fetlock, and drags the toe. ## Causes Compression during anesthesia or trauma (including humeral fracture). ## Diagnosis Characteristic posture and gait. The limb can bear weight if the elbow and carpus are splinted in pure nerve paralysis. ## Treatment Supportive care, splinting, anti-inflammatories, and time for compressive injuries. Humeral fracture cases have a poor outlook. ## Recovery and Prognosis Good for many post-anesthetic compressive injuries if the limb is protected. Poor if associated with fracture. ## Prevention Proper padding and positioning during anesthesia. Signs include: dropped elbow; inability to extend the elbow and carpus; knuckling at the fetlock; dragging the toe
Isolated injury is uncommon. Relevant mainly as an assistant to the triceps in elbow extension.
Not a structure of primary practical concern for owners under normal circumstances.
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