Duration of anatomy courses and performance on the USMLE Step 1 and Step 2 Examinations: Is there a relationship?

Abstract

During the past two decades, anatomy instruction has changed due to curricular reforms in medical schools. Reduction in total hours of anatomy course and cadaver dissection, as well as shifts towards an integrated curricula has raised questions whether changes have had a negative impact on the students’ knowledge of anatomy. Our purpose was to investigate the effect of changes in course hours, curriculum type, and laboratory experience on USMLE Step 1 and Step 2 CK scores. Results of 2009 AAA online survey of anatomy course directors from 54 LCME‐accredited schools were matched with USMLE scores for 6,411 examinees taking Step 1 for the first time in 2009. The USMLE scores included Step 1 total test scores, Step 1 gross anatomy sub‐scores, and Step 2 CK total test scores. Analyses of data indicate that for all three USMLE scores, examinees from schools with stand‐alone gross anatomy courses slightly outperformed examinees from schools with integrated curricula. Conversely, the number of course hours had no effect on how students performed on Step 1 or Step 2 CK. Examinees that were exposed to both dissection and prosection slightly outperformed on Step 2 examinees that had dissection only. While these relationships are statistically significant, they may not be practically meaningful and more research is needed to fully explore different aspects of anatomy curricula and retention of anatomy knowledge.