A cost-effective ultrasound model for demonstrating the whirlpool sign in testicular torsion

Abstract

Testicular torsion is a urological emergency requiring rapid diagnosis to prevent testicular loss, with the whirlpool sign on ultrasound being a critical indicator. In resource-limited settings, access to specialised ultrasound training is often constrained. To address this, we developed a cost-effective, reusable ultrasound training model that replicates the whirlpool sign using easily accessible materials. Our model consists of a boiled egg and coiled tubing set in gelatine, with iodine simulating blood flow. Emergency Medicine residents used the model during hands-on training sessions. This model offers a simple yet effective way to improve diagnostic skills in resource-constrained settings, potentially enhancing early detection and outcomes for testicular torsion.