Assessing mental representation of mastoidectomy by a computer-based drawing tool

Abstract

The total surface of mastoidectomy was higher in experts than in mid-level and beginner trainees (respectively 99 ± 6.5%, vs 57 ± 1.5%, and 22 ± 5.6%, p < 0.01 for experts vs beginners and p < 0.05 for experts vs mid-level, ANOVA and Bonferroni). Circularity was also higher in experts than in trainees. After training, total surface and circularity increased. The angle between traces and cavity edges was lower in experts than in trainees and was reduced after training.

Usefulness of temporal bone prototype for drilling training: A prospective study

“…Our results showed a score improvement in the mental representation of mastoidectomy after drilling on a TB, suggesting that TB drilling improves mental representation whether it is with the prototype or the cadaveric TB. These results are in agreement with a previous study 15 demonstrating a correlation of the performance in TB drilling with surgeon's experience and improved scores after a training session. Our work was limited by the lack of a 3D view and interaction with the image, and the absence of haptic feedback.…”

“…The mental representation of the mastoidectomy was evaluated using a mastoid image dividing the mastoidectomy area into six regions (subantral region, mastoid tip, retrosigmoid, antrum, tegmen region and Trautmann cells) as described in a previous study (Figure ). This evaluation was performed in two centres (n=19).…”

“…The anatomical landmarks define the limits of the mastoid cavity. This image is a validated model for mastoidectomy issued from the study of Bozorg‐Grayeli et al . Legend: 1: Subantral region, 2: mastoid tip, 3: retrosigmoid, 4: antrum, 5: tegmen region, 6: Trautmann cells…”

“…The anatomical landmarks define the limits of the mastoid cavity. This image is a validated model for mastoidectomy issued from the study of Bozorg-Grayeli et al 15 Legend: 1: Subantral region, 2: mastoid tip, 3: retrosigmoid, 4: antrum, 5: tegmen region, 6: Trautmann cells F I G U R E 2 Temporal bone drilling performance across groups. Legend: "Traditional" group: residents drilled a cadaveric temporal bone; "prototype" group: residents drilled an artificial temporal bone following by a cadaveric temporal bone drilling experience (P>.99; U=45).…”