Irreducible posterolateral elbow dislocation: a rare injury

Area of Science:

• Orthopedic Surgery
• Trauma Care
• Anatomy

Background:

• Posterolateral elbow dislocation is a common emergency department presentation.
• Most cases are successfully treated with closed reduction.
• Irreducible dislocations are exceptionally rare, with only four prior reports.

Observation:

• A 20-year-old male presented with irreducible posterolateral elbow dislocation.
• Surgical exploration revealed radial head buttonholing through the lateral collateral ligament complex.
• This mechanical block prevented successful closed reduction.

Findings:

• The radial head's protrusion through the lateral collateral ligament complex is a critical finding.
• This anatomical compromise creates an irreducible dislocation.
• Continued closed reduction attempts are contraindicated.

Implications:

• Highlights the importance of recognizing potential mechanical blocks in elbow dislocations.
• Suggests prompt surgical intervention for irreducible cases.
• Contributes to the limited literature on this rare injury pattern.