Table 2 OSATS mark scheme for task analysis derived from bench model assessments [10]
From: Basic skin surgery interactive simulation: system description and randomised educational trial
Score | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
Time in motion | Many unnecessary moves | Efficient time usage and some unnecessary moves | Consistently handled tissues appropriately with minimal damage | ||
Instrument handling | Repeatedly makes tentative or unsure movements with the instruments | Competent usage but occasionally awkward use | Fluid and smooth movements | ||
Surgical safety | Uses instruments unsafely more than two times and is hazardous to colleagues | Uses instruments with good care and aware of disposal of sharps | Exceptional attention to surgical safety and timely disposal of sharps | ||
Respect for tissue | Unnecessary force utilised and damage to instruments caused | Careful handling of tissue but occasional inadvertent damage | Consistently exceptional handling of tissues with minimal damage | ||
Demarcation and margins | Forgets to demarcate the lesion perimeter | Demarcates the lesion perimeter with uncertainty | Demarcates the lesion perimeter in its full | ||
Flap marking and planning | Plans the flap inappropriately with no concept of geometry | Largely pertains to the geometry of rotational or advancement flaps | Exceptional local flap design with good understanding of applicable geometry | ||
Administration of local anaesthetic | Forgets to administer local anaesthetic or unsafe administration | Local anaesthetic administered not wholly adequately | Adequate local anaesthetic administration with good technique | ||
Excision and undermining | Non-smooth excisional movement and failure of undermining | Smooth excision and reasonable undermining eventually | Smooth excisional movement and adequate undermining | ||
Coverage and suturing | Defect not fully covered and inadequate placement of sutures | Defect reasonably covered and adequate placement of sutures | Exceptional placement of sutures and coverage of defect | ||
Global mark | Unacceptable | Average | Exceptional | ||