Equis ISSN 2398-2977

Brachial plexus: trauma

Contributor(s): Caroline Hahn

Introduction

  • Not common.
  • Cause: compression of the plexus between scapula and ribs.
  • Signs: lateral rotation and subluxation of the shoulder, non-weightbearing of the affected leg, a lack of elbow extension, inability of fixation of elbow, resting of elbow in extended position, resting dorsum of pastern on the ground, a forward thrust of the limb at walk.
  • Diagnosis: thoracic limb lameness.
  • Treatment: DMSO, corticosteroids, surgery.

Pathogenesis

Etiology

  • Trauma to shoulder.
  • Abducted extension of shoulder and forelimb   →   can arise from lifting with hobbles on one front leg during anesthesia handling.
  • Compression of the brachial plexus and radial nerve roots between the medial aspect of the scapula and the ribs.
  • Fractures of the first rib can result in paralysis of the radial nerve and other nerves of the brachial plexus.

Pathophysiology

  • Brachial plexus trauma is not common in the horse as this structure is well protected.
  • Clincial signs observed in brachial plexus injury are signs observed with both suprascapular and radial nerve paralysis.

Diagnosis

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Treatment

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Further Reading

Publications


ADDED