Low-cost materials yield high resolution assessment of anatomic knowledge in surgical residents.

Introduction: Knowledge of anatomy is essential for surgeons. We sought to determine whether it is possible to effectively assess and differentiate the anatomic knowledge of general surgery residents, using pieces of fabric and yarn.

Methods: Postgraduate years 2, 3, and 4 general surgery residents were assessed during a simulation-based assessment known as the Surgical X-Games. Residents were allowed 3 minutes to assemble the anatomic structures of the right upper quadrant region and 2 minutes to create the right lower quadrant of the abdomen, using colored felt and yarn. One point (each) was given for naming and placing the structures in the correct position. A checklist was used to assess trainees with a maximum combined score of 150 points.

Results: A total of 34 residents (postgraduate year 2 = 16, postgraduate year 3 = 8, postgraduate year 4 = 10) participated in the 2017 fall Surgical X-Games and 31 residents (postgraduate year 2 = 13, postgraduate year 3 = 9, postgraduate year 4 = 9) participated in the spring Surgical X-Games. Total scores increased respective to the level of clinical training in both the fall Surgical X-Games (postgraduate year 2 = 77, postgraduate year 3 = 84, postgraduate year 4 = 93, P = .04) and the spring Surgical X-Games (postgraduate year 2 = 94, postgraduate year 3 = 101, postgraduate year 4 = 109). We observed significant improvement in the right upper quadrant, right lower quadrant, and total scores from the fall to the spring postgraduate year (P < .001).

Conclusion: Surgical residents showed an increase in mean anatomical scores from postgraduate years 2 to postgraduate years 3 to postgraduate years 4, using low-fidelity models. This inexpensive, 5-minute test based on a simple checklist may offer surgical educators insight in to residents' anatomic knowledge and potential readiness for clinical rotations.