Purpose: To determine the validity and reliability of using the Arthroscopic Surgery Skill Evaluation Tool (ASSET) to assess arthroscopic skill in the operating room. Methods: Eight orthopaedic residents, 1 sports medicine fellow, and 3 sports medicine faculty members recorded the diagnostic portion of 3 shoulder and 3 knee procedures in the operating room. Two blinded raters used the ASSET to assess each recorded procedure video. Criterion for a passing score on a procedure was attaining a 3 or greater in all 8 domains assessed. Results: In total 70 videos (36 shoulder, 34 knee) were evaluated by each rater. The attending/fellow group was assigned significantly higher mean ASSET scores compared with resident groups for both procedures (P = .01). The attending/fellow group also had the highest passing percentage (95.8%). Raters were in agreement for total ASSET scores assigned to both diagnostic arthroscopy of the shoulder (intraclass correlation coefficient [ICC] = 0.84) and knee (ICC = 0.81). Agreement on individual ASSET domains was moderate (ICC = 0.61 to 0.80) for all domains except safety and difficulty of procedure. Raters concurred on the pass-fail evaluation in 62 of 70 (88.6%) of procedures evaluated. Conclusions: Using the ASSET to assess surgical skills in the operating room is feasible, reliable, and valid.
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