The Orthobullets Podcast Shoulder & Elbow | Lateral Ulnar Collateral Ligament Injury (PLRI)
Jun 13, 2025
Explore the complexities of lateral ulnar collateral ligament injuries in the elbow. Discover the causes, diagnosis, and cutting-edge treatment options available. The discussion includes vital anatomical insights and effective examination methods. Surgical techniques are highlighted, ensuring a solid understanding of clinical management for this prevalent injury.
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LUCL Anatomy and Role
- The lateral collateral ligament complex includes the accessory lateral collateral, annular ligament, lateral radial collateral ligament, and lateral ulnar collateral ligament.
- The LUCL is the primary stabilizer against varus and external rotation stress at the elbow.
Presentation of LUCL Injury
- Patients with LUCL injury mainly complain of pain and may have clicking or catching during elbow extension or pushing off from an armrest.
- Physical exam includes testing for varus instability and tenderness over the LUCL.
Provocative Tests for PLRI
- Use provocative tests such as the lateral pivot shift, posterior drawer, apprehension, chair rise, tabletop relocation, and floor push-up tests for PLRI diagnosis.
- The lateral pivot shift test is more reliable under anesthesia and is performed with valgus stress and forearm supination.