Intra-Articular Catheter Placement: A Novel Approach for Simulating Ankle Effusions in Cadaver Models

Arthrocentesis is a clinical procedure employed by a number of medical subspecialties. Two techniques are commonly used for arthrocentesis: landmark and ultrasound. A number of different models exist to teach arthrocentesis including gel, plastic, and cadaveric types. Evidence suggests that cadaver types may be superior.1 Cadavers are an excellent model to teach arthrocentesis because their joints can be filled with fluid, creating simulated effusions.1–3 Creating and maintaining consistent effusions for large groups of students can be challenging. The volume required to create a clear effusion varies with each cadaver, and joint capsules are prone to leakage after numerous procedure attempts.4 Inadvertent air infiltration from repeated filling can create artifacts that limit visualization by ultrasound. Medical educators seek an arthrocentesis training model that is easily modifiable and can withstand multiple procedure attempts