Abstract
An Unusual Case of Posterolateral Rotatory Instability of the Elbow.
Highlights
X-rays demonstrated no bony deformity, except for the presence of multiple spots of heterotopic ossification near the humeral origin of the lateral ulnar collateral ligament (LUCL), suggestive for an old injury in that place
The authors present a case of posterolateral rotatory elbow instability (PLRI) caused by the concomitant presence of lateral ulnar collateral ligament (LUCL) insufficiency and an impression fracture of the volar margin of the radial head
Eight years after the trauma, the patient comes to the authors’ attention for recurrent elbow dislocation, in particular when an axial load was transferred into the radial head, with the forearm in neutral position and the elbow flexed to approximately 30 degrees
Summary
X-rays demonstrated no bony deformity, except for the presence of multiple spots of heterotopic ossification near the humeral origin of the LUCL, suggestive for an old injury in that place. The authors present a case of posterolateral rotatory elbow instability (PLRI) caused by the concomitant presence of lateral ulnar collateral ligament (LUCL) insufficiency and an impression fracture of the volar margin of the radial head.
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