Presenting Total Joint Cases on the ABOS Part II

For a lot of candidates walking into the ABOS Part II, total joints are the comfort zone. Hips and knees are bread and butter. The approach is familiar, the templating is familiar, the post-op pathway is familiar. And that's exactly why the examiners probe them hard.

Case selectors assign twelve cases from your collected list, and you only defend your own. When a chunk of those twelve are primary or revision arthroplasty, the examiners know you've done this operation dozens — maybe hundreds — of times. They aren't testing whether you can do it. They're testing whether you can defend why you did it, which implant you chose, and what you did when something went sideways.

Remember: you are walking through the submitted case summary. The summary IS the structure of your presentation. Your job is to guide the examiners through it with control, humility, and a clear rationale at every decision point.

Indications Are the Scoring Frontier

If there is one place total joint cases get picked apart, it's indications. The examiners are trying to figure out whether you operated on this patient because they truly needed it — or because you had an OR block to fill. Any hint of the latter is a red flag.

That means four things need to be visible in your summary and in how you talk about the case:

• Pain. Character, location, severity, duration, what makes it better or worse, and how it changed over time.
• Function. What the patient can no longer do that they want to do. Stairs, distance, sleep, work. Make it concrete.
• Imaging. Correlate the radiographic findings with the clinical picture. A joint that looks bad on film but doesn't hurt is not an indication to operate.
• Conservative care history. This is the big one. What was tried, for how long, with what response.

Use the language the examiners want to hear: “After failing conservative measures including…” and then list them. Activity modification. Anti-inflammatories if appropriate. Physical therapy. Injections if you used them. Assistive devices. Weight loss counseling. Then — “through shared decision making” — you moved forward with surgery.

If your documentation is thin on this, the examiners will find it. Examiner two is reading your uploaded PDFs in real time while examiner one is talking to you. Documentation quality matters as much as verbal delivery. For more on the documentation side, see our piece on documenting conservative treatment.

Implant Selection Must Be Justifiable

Nobody is going to fail you for using the implant you use every day. What will hurt you is being unable to explain why. “That's what I use” is not a rationale. It's a shrug.

For every implant choice in your case, be ready to articulate:

• Fixation philosophy — and why it fits this patient's bone quality, age, and activity demands.
• Bearing surface and articulation rationale relative to the patient's expected longevity and function.
• Constraint level, if relevant — why this much, not more, not less.
• Your familiarity with the system and your track record with it.

You don't need to quote registry data from memory. You do need to sound like a surgeon who thought about the patient in front of them, not a surgeon who defaulted to the tray the rep brought in.

Complications: Address Them Head-On

If a total joint case in your twelve has a complication — infection, dislocation, periprosthetic fracture, early loosening, VTE, wound issue — you must bring it up yourself, early, and without flinching. Hiding complications is the single fastest way to fail. If the examiners find something in the records that you didn't volunteer, the message it sends is devastating: this surgeon was trying to conceal an outcome.

The structure for presenting a complication is straightforward:

• State what happened, when, and how it was identified.
• Explain the workup you performed and the specialists you consulted.
• Describe the treatment decision and the reasoning behind it.
• Show the follow-up. Close the loop. Demonstrate that you stayed engaged with the patient through recovery.

You can pass with a bad outcome. What you cannot pass with is the appearance of evasiveness or poor judgment. For a deeper look at this, read handling complications on the oral boards.

Post-Op Protocols and Follow-Up

Examiners will ask about your weight-bearing status, your VTE prophylaxis approach, your rehab pathway, your infection prevention protocol, and your follow-up schedule. These are questions you should expect on every arthroplasty case.

Two things to keep in mind. First, your answers should be consistent with what's actually in the chart. If your case summary says one thing and you say another under pressure, the silent examiner reading the PDFs will notice. Second, your protocol should be defensible — meaning you can explain why you chose it for this patient, not just that it's what your group does.

On the quality of the underlying documentation, our post on operative note quality covers what examiners look for line by line.

Outcomes: Humble, Specific, Honest

The tone on outcomes is where a lot of candidates stumble. Overselling the result — “patient did amazing, so happy” — invites pushback. Examiners hear it as bragging and they will start probing for the crack. The safer, more credible framing is quieter: “Overall the patient was satisfied with the outcome” — and then let the specifics carry the weight.

Those specifics are the outcome measures you documented: pain scores, functional milestones, return to activity, any validated instrument you used. Follow-up interval matters too. A patient doing well at six weeks is not the same story as a patient doing well at a year. Say which one you have.

For how to structure this part of the case across the board, see presenting outcomes on the ABOS Part II.

The Common Pitfalls

The patterns that cost candidates points on total joint cases are predictable. Know them and you can check your own prep against them:

• Weak indications documentation. Conservative care is either missing, vague, or clearly perfunctory.
• Generic implant rationale. “It's what I use” with no patient-specific reasoning behind it.
• Glossing over complications. Mentioning them in passing, or waiting for the examiner to bring them up.
• Vague outcome reporting. Enthusiasm instead of data. No follow-up interval. No measures.
• Inconsistency between the summary and the verbal presentation. The silent examiner will catch it.

The Mindset

The examiners know total joints are your comfort zone. They will push precisely because they expect you to know this cold. Stay humble in your tone, specific in your language, and forthright about anything that didn't go perfectly. You're not trying to impress them with how well things went — you're trying to show them that you made sound decisions for the patient in front of you, and that you stayed engaged through the full arc of care.

That's what a board-certified arthroplasty surgeon sounds like. And that's what the examiners are listening for.