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Differences Between Attached and Detached Cadaveric Prosections on Students' Identification Ability During Practical

Spencer Mattingly1, Elizabeth Hardesty2, Kevin Chovanec1

  • 1Department of Ecology and Evolutionary Biology, College of Liberal Arts and Sciences, University of Kansas, Lawrence, Kansas.

Anatomical Sciences Education
|October 10, 2020
PubMed
Summary

Students recognized anatomical structures on both in situ and ex situ prosections, with a slight advantage for ex situ prosections. Knowledge, not prosection type, primarily influenced identification accuracy.

Keywords:
cadaver dissectioncadaver prosectionsgross anatomy educationlearningundergraduate education

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Area of Science:

  • Anatomy Education
  • Medical Education Research

Background:

  • Cadaveric prosections are vital for anatomy education, encompassing in situ (complete cadaver) and ex situ (detached structure) types.
  • Research primarily compares dissection to prosection, with limited data on the efficacy of different prosection formats.

Purpose of the Study:

  • To investigate differences in undergraduate students' anatomical structure identification between in situ and ex situ prosections.
  • To assess if students could recognize the same structure across both prosection types or only one.

Main Methods:

  • Six anatomical structures were tagged on both in situ and ex situ prosections.
  • Student recognition of these structures was evaluated across three summative examinations.

Main Results:

  • A majority of students (61%-68%) consistently recognized or failed to recognize structures on both prosection types.
  • A small percentage (1.6%-31.6%) recognized structures on only one type, with a statistically significant bias towards ex situ prosections (P ≤ 0.01).

Conclusions:

  • Student identification ability is mainly driven by anatomical knowledge, not spatial or contextual challenges of prosection types.
  • The efficacy of in situ versus ex situ prosections varies by anatomical structure, suggesting combined use is optimal for comprehensive anatomy education.