Supra-acetabular Pin Placement Without Fluoroscopy in Anterior Pelvic External Fixation Application.

High-energy pelvic ring injuries are associated with a significant rate of mortality and may require urgent stabilization with anterior pelvic external fixation. The iliac crest can be used for pin placement, but supra-acetabular pin placement is biomechanically superior. Traditionally, supra-acetabular pin placement is performed in the operating room, with time-consuming imaging techniques.

Excessively long interfragmentary screws for posterior wall acetabular fractures can predict intra-articular penetration.

Background: The fixation of posterior wall acetabular fractures often utilizes interfragmentary screws with varying length. Intricate pelvic anatomy and overhanging greater trochanter make obtaining proper screw trajectory difficult. A large measurement may represent aberrant trajectory and breach of the articular surface.