Kinematic assessment systems for laparoscopic cholecystectomy are weakly validated, restricted to small datasets, and capture only a narrow component of operative competence¶

Claim · All claims
Evidence · 1 study (2 entries) · review r3 · q3
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person · recheck by 2029: tool and model accuracy changes quickly

Subclaims¶

q3 i? Only 6 studies evaluated kinematic motion-modelling systems, with sample sizes of 6 to 47 procedures, and no study evaluated clinical outcomes. → Mainwaring Elizabeth M. A. 2026 q3 i? All kinematic studies were rated doubtful or inadequate on overall COSMIN quality (3/6 each), indicating motion-based metrics did not correspond to stronger validation methodology. → Mainwaring Elizabeth M. A. 2026 (2)

Evidence¶

Mainwaring Elizabeth M. A. 2026¶

Mainwaring Elizabeth M. A., Guidozzi Nadia, James Jonnie P., Pantling Jai, Menon Nainika, Salem Riadh, Markar Sheraz R. (2026). Objective technical skills assessment in laparoscopic cholecystectomy: a systematic review of manual, kinematic, and AI-based tools. Surgical Endoscopy. https://doi.org/10.1007/s00464-026-13309-z

q3 · i? · review · r3

The kinematic synthesis reports only six studies, using electromagnetic tracking, optical sensors, or 2D video-based motion analysis, with sample sizes of 6 to 47 procedures. These systems quantify velocity, acceleration, jerk, path length, and movement smoothness as proxies for skill, and no study evaluated clinical outcomes.

"Six studies evaluated kinematic motion-modelling systems using electromagnetic tracking, optical sensors, or two-dimensional video-based motion analysis [21, 26, 27, 29, 30, 36]. Sample sizes ranged from 6 to 47 procedures."

Mainwaring Elizabeth M. A. 2026 (2)¶

Mainwaring Elizabeth M. A., Guidozzi Nadia, James Jonnie P., Pantling Jai, Menon Nainika, Salem Riadh, Markar Sheraz R. (2026). Objective technical skills assessment in laparoscopic cholecystectomy: a systematic review of manual, kinematic, and AI-based tools. Surgical Endoscopy. https://doi.org/10.1007/s00464-026-13309-z

q3 · i? · review · r3

In the risk-of-bias results, "all kinematic studies were rated doubtful or inadequate overall (3/6 [50.0%] each)" by COSMIN. The discussion states this indicates quantitative motion-based metrics did not necessarily correspond to stronger validation methodology.

"In contrast, all kinematic studies were rated doubtful or inadequate overall (3/6 [50.0%] each)."

Discussion¶

Related Claims¶

• No objective assessment tool for laparoscopic cholecystectomy demonstrates comprehensive validity across all Messick domains, so no gold standard exists — a broader claim this one bears on
• Methodological quality of LC assessment-tool studies is moderate (MERSQI median 12.5) and outcomes rarely extend beyond performance-level measures — a broader claim this one bears on
• Manual assessment tools have the largest body of validity evidence in laparoscopic cholecystectomy but show variable reliability and no links to patient outcomes — related
• AI-based assessment systems show strong internal performance and early real-time deployment for critical view of safety detection, but lack external validation and clinical impact evidence — related