Validation of Motion Tracking Software for Evaluation of Surgical Performance in Laparoscopic Cholecystectomy

Sandeep Ganni*, Sanne M.B.I. Botden, Magdalena Chmarra, Meng Li, Richard H.M. Goossens, Jack J. Jakimowicz

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
69 Downloads (Pure)


Motion tracking software for assessing laparoscopic surgical proficiency has been proven to be effective in differentiating between expert and novice performances. However, with several indices that can be generated from the software, there is no set threshold that can be used to benchmark performances. The aim of this study was to identify the best possible algorithm that can be used to benchmark expert, intermediate and novice performances for objective evaluation of psychomotor skills. 12 video recordings of various surgeons were collected in a blinded fashion. Data from our previous study of 6 experts and 23 novices was also included in the analysis to determine thresholds for performance. Video recording were analyzed both by the Kinovea 0.8.15 software and a blinded expert observer using the CAT form. Multiple algorithms were tested to accurately identify expert and novice performances. ½ L + 13 A + 16 J scoring of path length, average movement and jerk index respectively resulted in identifying 23/24 performances. Comparing the algorithm to CAT assessment yielded in a linear regression coefficient R2 of 0.844. The value of motion tracking software in providing objective clinical evaluation and retrospective analysis is evident. Given the prospective use of this tool the algorithm developed in this study proves to be effective in benchmarking performances for psychomotor skills evaluation.

Original languageEnglish
Article number56
Number of pages5
JournalJournal of Medical Systems
Issue number3
Publication statusPublished - 2020


  • Indices of performance
  • Laparoscopic skills training
  • Motion tracking
  • Objective evaluation
  • Thresholds of performance
  • Video-based assessment


Dive into the research topics of 'Validation of Motion Tracking Software for Evaluation of Surgical Performance in Laparoscopic Cholecystectomy'. Together they form a unique fingerprint.

Cite this