# Objective structured assessment of medical students’ technical skills in second-degree perineal laceration repair with sponge model-based training

## TL;DR

A sponge model training improved medical students' skills in repairing perineal lacerations and was validated with objective assessments.

## Contribution

A sponge model-based training and OSATS validation for perineal laceration repair in medical students is presented.

## Key findings

- Sponge model training significantly improved students' technical skills in perineal laceration repair.
- OSATS scores and senior physician ratings showed strong correlation, validating OSATS use in this context.

## Abstract

In this cohort study, we used a sponge simulator to train students in second-degree perineal laceration repair. We examined whether the training course improved the students’ skills, as measured with an objective structured assessment of technical skills (OSATS) and by a senior physician. We also examined the correlation between these ratings to assess the validity of OSATS application in this context.

Between April and July 2022, 40 medical students took part in gynecological/obstetrics training that included a lecture about perineal trauma and the viewing of a video that demonstrated second-degree perineal laceration repair using a sponge model. They then underwent initial evaluation by a senior physician and OSATS application, yielding two independent scores. After training with the sponge model, a second evaluation was performed. The OSATS assessed practical skills (8 items) and suture results (2 items). The senior physician assigned ratings on a five-point ordinal scale ranging from 1 (excellent) to 5 (poor).

Training with the sponge simulator significantly increased students’ OSATS (practical skills, p < 0.001; suture results, p < 0.05) and senior physician (p < 0.001) ratings. The OSATS and senior physician ratings correlated strongly (Spearman’s r: first assessment, – 0.72; second assessment, – 0.74; p < 0.01).

The sponge-based training improves students’ skills for the repair of a second-degree perineal laceration. The OSATS for the sponge model might be a valid option to examine medical students in an obstetrical course.