ISSN 2398-2969      

Elbow: congenital luxation

icanis
Contributor(s):

Prof Walter Renberg


Introduction

  • Uncommon - 15% of non-traumatic elbow lameness.
  • Cause: congenital developmental abnormality.
  • 2 types:
    • Severe disability: about 90° of outward rotation of proximal ulna; trochlear notch and anconeal process disarticulated from humerus; displacement of triceps tendon (divided radiographically into types II and III).
    • Disability not as severe proximal radius displaced caudally and laterally; normal relationship between humerus and ulna; proximal radial epiphysis may be deformed. Radiographic changes defined as type I.
  • Signs: lameness.
  • Diagnosis: radiography.
  • Treatment: closed reduction if possible, surgical if not.
  • Prognosis: worse when surgery required or in neglected cases.

Pathogenesis

Etiology

  • Congenital developmental anomaly.

Pathophysiology

  • Unknown - ?failure of development of medial collateral and annular ligaments and hypertrophy of lateral collateral ligament allowing outward rotation of ulna to occur.
  • Changes seen may be secondary: a) Severe disability: 90° outward rotation of proximal ulna; removing trochlear notch and anconeal process from effective articulation with humerus; displacement of triceps tendon. b) Less severe disability: normal relationship between humerus and ulna; proximal radius displaced laterally and caudally.
  • Long-standing cases - articular surface of proximal radius deformed due to lack of contact with humerus.

Timecourse

  • Weeks to months.

Diagnosis

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Treatment

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Further Reading

Publications

Refereed papers

Other sources of information

  • Komtebedde & Vasseur Elbow luxation. In: Textbook of Small Animal Surgery. 2nd edn. Philadelphia: W B Saunders & Co.

Related Images

Can’t find what you’re looking for?

We have an ever growing content library on Vetlexicon so if you ever find we haven't covered something that you need please fill in the form below and let us know!

 
 
 
 

To show you are not a Bot please can you enter the number showing adjacent to this field

 Security code