[Posterolateral rotatory instability of the elbow]

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Biomechanics

Background:

• Posterolateral rotatory instability (PLRI) is a common consequence of elbow trauma, specifically injury to the lateral ulnar collateral ligament (LUCL).
• This condition involves external rotation of the radius and ulna relative to the humerus, causing posterior displacement of the radial head.
• Symptoms may include lateral elbow pain, clicking, popping, and snapping sensations.

Purpose of the Study:

• To review the current understanding of chronic posterolateral rotatory instability (PLRI) of the elbow.
• To consolidate knowledge on the pathoanatomy, clinical presentation, diagnostic methods, and management strategies for PLRI.

Main Methods:

• Literature review summarizing existing research on PLRI.
• Discussion of diagnostic techniques, including physical examination and specialized tests.
• Overview of surgical interventions, focusing on lateral collateral ligament complex reconstruction.

Main Results:

• PLRI is the most frequent type of chronic elbow instability, typically arising after elbow dislocation.
• Diagnosis depends on clinical suspicion and thorough physical assessment.
• Surgical reconstruction of the lateral collateral ligament complex has demonstrated successful outcomes.

Conclusions:

• Effective management of chronic PLRI involves accurate diagnosis through clinical evaluation and appropriate surgical reconstruction.
• Understanding the pathoanatomy and presentation is crucial for timely intervention.
• Further research may refine diagnostic accuracy and treatment efficacy for PLRI.