Medicolegal documentation and expert evidence — branching viva

Opening (candidate)

I would separate the two situations, because they carry different duties. The independent expert report on the missed appendicitis is expert opinion: my overriding duty is to the court, I must work within my expertise and have no conflict of interest, and I would structure the report around the standard of care, causation and harm, each tied to the record and the evidence base. The subpoena about the femur-fracture child is witness-of-fact evidence: I would read the subpoena, contact medical indemnity, not alter any record, and prepare to give factual evidence from my notes about what I saw and did. [7] [9]

Branch A — Witness of fact versus expert witness

Examiner: Distinguish the witness of fact from the expert witness, and tell me where each one's duty lies. [7] [12]

Candidate: The witness of fact — the treating clinician — reports what they personally observed, did and found, from the record; their duty is to tell the truth about their own care. The expert witness gives an independent, impartial opinion to assist the court, drawn from specialised knowledge. The expert's overriding duty is to the court, not to the instructing party. The expert is the court's educator, not a party's advocate. Confusing the two — offering opinion as a witness of fact, or advocating as an expert — is a classic error. [7] [12]

Branch B — The subpoena

Examiner: The subpoena arrives at 5 p.m. on a Friday. Walk me through your first steps. [2] [11]

Candidate: First I read it carefully and note the return date. Second, I do not alter, add to, back-date or destroy any record — if a correction is genuinely needed, I draw a single line through the entry so it stays legible, add the correction with the date, time and my signature, and never delete. Third, I contact my medical indemnity insurer and my department before I respond, because indemnity advice shapes how I handle the records and whether I need to attend. Fourth, I preserve all the relevant records. [2] [11]

Branch C — Structuring the expert report

Examiner: Take the appendicitis case. How do you structure the independent expert report? [7] [9]

Candidate: I restate the instruction and the question asked; state my qualifications and sign a declaration of my overriding duty to the court; list the records I reviewed; give the background and history; set out the findings; then give my opinion in components — the standard of care, causation, and the extent of harm — each tied to its factual basis in the record and to the evidence base, with my reasoning stated and any uncertainty or assumptions flagged. I close with a concise conclusion that answers the question. I write in plain language for a non-medical court. [7] [9]

Branch D — The advocacy trap

Examiner: The solicitor who instructed you hints that a report favouring their client would lead to more work. How do you respond? [9] [12]

Candidate: I would not change a word for that reason. The cardinal failure of an expert is drifting into advocacy for the instructing party — the "hired gun." My duty is to the court, so my opinion stands or falls on the evidence regardless of who pays me. If I found the care defensible I would say so even though it harms the instructing party's case. Colleges can discipline biased testimony, and the court can exclude it. [9] [12]

Branch E — Surviving cross-examination

Examiner: You are now in the box on the child-protection case. The cross-examiner puts it to you that your notes are incomplete. [3] [9]

Candidate: I would answer truthfully from my contemporaneous record, which is my strongest evidence because memory is unreliable. If a genuine gap exists, I concede it fairly rather than fight it — a graceful concession builds credibility where a stubborn denial destroys it. I keep fact separate from opinion, stay within my expertise, listen to the whole question, and answer only what is asked. I do not advocate for a party. [3] [9]

Close

Confirm the overriding duty to the court, the witness-of-fact versus expert distinction, the documentation principles (contemporaneous, attributed, unaltered), and the first-step rule (read it, do not alter the record, contact indemnity). Acknowledge the documented stress of testifying and the need for debrief and support, particularly in child-maltreatment cases. [1] [3]