Questions to Ask a General Surgery Expert Witness at Deposition (2026 Guide)

By John Mahoney · Updated 2026-09-01 · 18 questions in 4 concession chains

You are about to cross-examine someone with two decades of training you don't have, on their home turf, about the thing they do every day. That asymmetry is the defining problem of medical-expert depositions — and it gets worse in multi-defendant malpractice cases, where two to four different specialties can be in play in a single case and you have to be conversant in all of them by deposition day.

General-surgery experts testify about operative technique, intraoperative injury, retained objects, and — most often — the recognition and rescue of complications after they occur. Their favorite phrase is "known complication." The funnel’s job is to separate the complication from the response to it.

The answer to the asymmetry is not to learn general surgery — it is structure. A concession funnel asks the expert to agree, one fact at a time, to propositions so orthodox that refusing them costs more credibility than granting them. The questions below are a generic-case-safe starting bank, organized into the four chains that structure works through.

How to use these questions

Every question below follows three rules of expert cross-examination: it is leading (it states a fact and asks for agreement), it contains one fact (no compounds — a compound question lets the witness answer the easy half), and it belongs to a concession chain (each answer narrows the room the next answer can live in). Ask them in order. When you get the concession, stop — do not ask the "why" question that lets the expert explain it away.

Chain 1 — Qualifications, retention & scope

Goal: establish on the record that this is a paid, retained witness who never touched the patient, and fix the boundaries of what they actually practice.

Doctor, you were retained by opposing counsel in this case, correct?
You are being compensated for your time reviewing this case and for your testimony today, correct?
You never examined or treated the patient in this case, correct?
Everything you know about this case comes from the materials counsel selected and sent to you, correct?
You agree that different operations carry different standards — and your opinions here are limited to the procedures actually at issue in this case, correct?

Chain 2 — Bases-of-opinion lockdown

Goal: freeze the universe. After this chain, any new document, new basis, or new opinion at trial is impeachment material.

You have now told us every document and material you reviewed in forming your opinions, correct?
You are not relying on anything outside that file for the opinions you will give in this case, correct?
You have told us every opinion you intend to offer at trial, correct?
You agree that an opinion you cannot state to a reasonable degree of medical probability is speculation, correct?

Chain 3 — Substantive concessions: complications, recognition, and rescue

Most surgical cases are lost or won on what happened after the injury, not the injury itself. This chain makes the expert concede the distinction that defeats the "known complication" defense.

You agree that calling something a "known complication" does not tell us whether it happened negligently in a particular case, correct?
Recognizing an injury that occurs during surgery is part of the surgeon’s job, correct?
Responding appropriately to a recognized injury is also part of the surgeon’s job, correct?
Surgical counts exist to prevent leaving objects inside patients, correct?
A patient who deteriorates after surgery requires evaluation, correct?
Informed consent requires disclosing the material risks of the operation to the patient, correct?

Chain 4 — Closing the doors

Goal: end with the record sealed. These questions convert silence into a commitment that nothing new is coming at trial.

You are not offering any opinions in this case beyond the ones we have discussed today, correct?
You have not held back any opinion or criticism that you intend to offer at trial, correct?
You are not offering any opinion about the anesthesia care in this case, correct?

These are the generic questions. Your case isn't generic.

The MedLegal AI Examination Builder generates a complete, case-specific concession-funnel roadmap for deposing a general surgery expert — built from your theory of the case, aware of which side you're on and what kind of witness you're facing, with stop markers, if-they-resist branches, and the doors you should not open. Three free cases, no credit card.

Build my examination → General Surgery depo trainer

Where lawyers get burned deposing general surgery experts

Letting "judgment call" swallow the rescue failure

Experts frame everything as intraoperative judgment, where deference is highest. But most cases turn on the post-injury sequence — recognition, workup, timely return to the OR. Split the case into decision versus response on the record, and make the expert defend each separately.

Merging the injury with the delayed diagnosis of it

An intraoperative injury may be defensible; a three-day delay in recognizing it usually is not. If your questions blend the two, the expert answers only the defensible half. One event, one chain of questions.

Treating the signed consent form as the consent conversation

A signature proves a form was signed, not that risks were explained. Experts will equate the two unless you make them concede — separately — that the form and the conversation are different things, and that only one of them is in the chart.

FAQ

What questions should I ask a general surgery expert witness at deposition?

Work in four concession chains: (1) qualifications, retention, and scope — establish the expert was retained, is compensated, never treated the patient, and what they do and do not practice; (2) bases-of-opinion lockdown — pin every document reviewed and every opinion they intend to offer; (3) the general surgery-specific substantive chain — well-established propositions such as "You agree that calling something a "known complication" does not tell us whether it happened negligently in a particular case"; and (4) closing the doors — confirm on the record that no undisclosed opinions remain. Every question should be leading, contain one fact, and build on the prior answer.

How do I cross-examine a medical expert when I never went to medical school?

You don't out-doctor the doctor — you build concession chains from propositions so well-established that a credible general surgery expert cannot refuse them, then apply those concessions to the facts in the chart. The expert's medical training becomes your asset: the more orthodox the proposition, the more it costs them to fight it. The asymmetry problem is real — especially in multi-defendant cases with two to four specialties — which is why the questions are organized as funnels rather than as debates.

What are the biggest traps when deposing a general surgery expert witness?

The classic traps are letting the "judgment call" frame swallow what was really a failure to recognize and rescue a complication, blending the intraoperative injury with the delayed diagnosis of it so the expert only defends the easier half, and treating a signed consent form as proof of an actual risk conversation.

Related resources

Examination Builder — a case-specific concession-funnel roadmap from your theory of the case
General Surgery deposition trainer — the other side of the table: how general surgery witnesses are prepped against these questions
All specialties — deposition question guides
Are you a general surgery physician? Join the MedLegal AI expert network

This page is informational only and is not legal advice. Question banks are generic-case-safe starting points — adapt every question to the facts, the jurisdiction, and your theory of the case before using it in a deposition.