How many cases do you need for ABOS Part II?

The ABOS requires a minimum case volume across specified categories, but the exact numbers and category breakdowns are updated periodically by the Board. What matters most is that your case list demonstrates breadth across orthopedic subspecialties and sufficient volume to show independent surgical competence. From your submitted list, 12 cases are randomly selected for discussion during the oral exam.

The emphasis is on quality of documentation, not just quantity. Each case needs to be thoroughly documented with de-identified patient information, your clinical reasoning, the procedure performed, and the outcome. Cases with complications are not a liability — in fact, examiners often prefer discussing cases with complications because they reveal how you think under pressure and whether you manage adverse outcomes appropriately.

Do not try to game the system by only submitting straightforward cases. A list full of simple procedures may raise questions about your practice scope. Include the full range of your practice, including complex cases and those with complications. The key is being prepared to discuss every single case on your list. Ortho Board Prep's case summary tools help you create structured, exam-ready summaries so you can present any case with confidence.