TABLE II.
The ASSET Global Rating Scale
| Domain | Global Rating |
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| Safety | 1 (Novice) | 2 | 3 (Competent) | 4 | 5 (Expert) |
| Significant damage to articular cartilage or soft tissue | Insignificant damage to articular cartilage or soft tissue | No damage to articular cartilage or soft tissue | |||
| Field of View | 1 (Novice) | 2 | 3 (Competent) | 4 | 5 (Expert) |
| Narrow field of view, inadequate arthroscope or light source positioning | Moderate field of view, adequate arthroscope or light source positioning | Expansive field of view, optimal arthroscope or light source positioning | |||
| Camera Dexterity | 1 (Novice) | 2 | 3 (Competent) | 4 | 5 (Expert) |
| Awkward or graceless movements, fails to keep camera centered and correctly oriented | Appropriate use of camera, occasionally needs to reposition | Graceful and dexterous throughout procedure with camera always centered and correctly oriented | |||
| Instrument Dexterity | 1 (Novice) | 2 | 3 (Competent) | 4 | 5 (Expert) |
| Overly tentative or awkward with instruments, unable to consistently direct instruments to targets | Careful, controlled use of instruments, occasionally misses targets | Confident and accurate use of all instruments | |||
| Bimanual Dexterity | 1 (Novice) | 2 | 3 (Competent) | 4 | 5 (Expert) |
| Unable to use both hands or no coordination between hands | Careful, controlled use of instruments, occasionally misses targets | Uses both hands to coordinate camera and instrument positioning for optimal performance | |||
| Flow of Procedure | 1 (Novice) | 2 | 3 (Competent) | 4 | 5 (Expert) |
| Frequently stops operating or persists without progress, multiple unsuccessful attempts prior to completing tasks | Steady progression of operative procedure with few unsuccessful attempts | Obviously planned course of procedure, fluid transition from one task to the next with no unsuccessful attempts | |||
| Quality of Procedure | 1 (Novice) | 2 | 3 (Competent) | 4 | 5 (Expert) |
| Inadequate or incomplete final product | Adequate final product with only minor flaws that do not require correction | Optimal final product with no flaws | |||
| Autonomy | 1 (Novice) | 2 | 3 (Competent) | ||
| Unable to complete procedure even with intervention(s) | Able to complete procedure but required intervention(s) | Able to complete procedure without intervention | |||
| Added Complexity of Procedure (additional domain) | 1 | 2 | 3 | ||
| No difficulty | Moderate difficulty (mild inflammation or scarring) | Extreme difficulty (severe inflammation or scarring, abnormal anatomy) | |||