ISSN 2398-2969      

Shoulder: dysplasia

icanis
Contributor(s):

Neil Burton


Introduction

  • Rare congenital anomaly characterized by excessive shoulder joint laxity.
  • Cause: shallow glenoids, flattened humeral heads.
  • Signs: non-specific forelimb lameness, mild discomfort on shoulder extension.
  • Prognosis: fair with conservative treatment - lameness/discomfort decreases with skeletal maturity.

Pathogenesis

Etiology

  • Developmental.

Pathophysiology

  • Developmental anomaly.
  • Maldevelopment: shallow glenoid and flattened humeral head permit excessive joint laxity.
  • Discomfort/lameness usually improves with skeletal maturity as the surrounding musculature matures.
  • Instability predisposes to secondary osteoarthritic change of the joint(s).

Diagnosis

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Treatment

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Outcomes

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