Medicolegal Principles and Negligence

Medical negligence is a civil wrong — a tort — in which a patient who has been harmed alleges that a healthcare professional breached a duty of care and thereby caused an avoidable injury. Three things must be separated at the outset, because examiners and patients conflate them. A complaint is an expression of dissatisfaction, not a legal claim. A poor outcome is a clinical reality, and in orthopaedics many good operations have imperfect results; a bad result alone says nothing about fault. A medical error is a failure of a planned action, but most errors cause no harm and many harms arise without any error at all. Negligence is the legal conclusion that the care fell below an acceptable standard and that this breach more likely than not caused identifiable damage.

Orthopaedic surgery features disproportionately in medicolegal claims across common-law jurisdictions. The work is high-volume, device- and decision-heavy, and produces outcomes a patient can see and measure — a stiff knee, a leg-length discrepancy, a scar, a dropped foot. The recurring root causes are the same worldwide: failures of communication and consent, delayed or missed diagnosis (compartment syndrome, missed fracture, wrong-site surgery), and inadequate documentation to prove what was actually done.

The professional relevance is direct. The FRCS, FRACS and ABOS examinations all assess professionalism and ethics, and a viva on what constitutes negligence, or how you would defend your consent for an operation, is routine. The four-principles framework of Beauchamp and Childress — respect for autonomy, beneficence, non-maleficence and justice — frames the ethics. The law frames the consequences when those principles are breached.

To succeed in a negligence claim the claimant (the patient) must establish all four elements. Fail one and the claim fails, however poor the conduct may have been. This is the structure an examiner wants to hear, in order.

In practice the four elements map onto a clear clinical narrative. Duty is usually the easiest to establish and is rarely contested: the moment you accept care of a patient — including reviewing their films, giving telephone advice, or covering a colleague's list — you owe them a duty, and once assumed that duty cannot simply be abandoned without a proper handover. Breach is where most litigation turns, because it asks whether the management was reasonable, judged against the relevant professional standard (Bolam and Bolitho in the United Kingdom, the reasonable-physician standard in the United States). Causation is often the hardest to prove: even if the conduct was poor, the claimant must show that the harm would probably not have occurred but for the breach. Damages closes the loop — if there is no injury, however bad the conduct, there is nothing to compensate.

The evidential standard throughout is the civil balance of probabilities: the claimant must show it is more likely than not — over 50%the balance point — that each element is met. This is a markedly lower bar than the criminal standard of beyond reasonable doubt.

The standard of care asks what a reasonably competent doctor, skilled in that particular art, would have done in the same situation. In Commonwealth law the answer was set by Bolam v Friern Hospital Management Committee (1957). McNair J directed that a doctor is not negligent if they acted in accordance with a practice accepted as proper by a responsible body of medical opinion skilled in that field. This became the Bolam test — peer professional opinion, defended by expert witnesses — and it governed both treatment decisions and the disclosure of risk for nearly forty years.

The test was tempered by Bolitho v City and Hackney Health Authority (1997). Lord Browne-Wilkinson clarified that the court is not bound to find a doctor not negligent simply because a body of medical opinion supports the practice. If that opinion is not capable of withstanding logical analysis — if, for example, the risk-benefit reasoning is self-evidently unsound — the court may reject it and find negligence. Bolitho did not abolish Bolam, but it gave the judiciary the final word: the standard of care is ultimately a question for the court, not for doctors alone.

The decisive shift came with Montgomery v Lanarkshire Health Board (2015), which removed the disclosure of risk from the Bolam framework entirely. The Supreme Court held that doctors must take reasonable steps to ensure the patient is aware of any material risks of a proposed treatment and of reasonable alternatives or inaction. A risk is material if a reasonable person in the patient's position would be likely to attach significance to it, or if the doctor is, or should be, aware that the particular patient would attach significance to it. This is a patient-centred standard, assessed from the perspective of the reasonable patient, not the reasonable doctor. Crucially, treatment decisions themselves are still generally judged under Bolam/Bolitho, but the conversation about risk and consent is now judged by what the patient was entitled to know.

Informed consent is now the single most tested medicolegal topic in orthopaedic examinations, and the most common thread in real claims. Under Montgomery, valid consent is not a signature on a form — it is the outcome of a dialogue. The surgeon must take reasonable steps to ensure the patient understands the nature of the proposed treatment, its purpose, the material risks, the reasonable alternatives (including doing nothing), and the consequences of each option.

A risk is material under two limbs. First, a risk is material if a reasonable person in the patient's position would be likely to attach significance to it — this captures both the likelihood and the severity of the harm (a rare but devastating risk, such as blindness or paraplegia, may be material even if uncommon). Second, a risk is material if the doctor is, or should reasonably be, aware that this particular patient would be likely to attach significance to it — for example, a professional violinist's concern about a hand-nerve risk, or an elite athlete's timeline for return to sport. The duty is to advise, not to impose: the patient's own values decide what matters.

There are narrow, recognised exceptions to the duty to warn. The patient may exercise their autonomy by declining information and asking not to be told. In a genuine emergency where the patient lacks capacity and treatment is necessary to preserve life or limb, consent may proceed in the patient's best interests. Therapeutic privilege — withholding information on the grounds that full disclosure would harm the patient — is acknowledged in principle but interpreted so narrowly that it is rarely a safe basis in practice.

The reasonable-patient standard is now the converging global norm. Rogers v Whitaker (1992) established it in Australia (a surgeon did not warn of a roughly one-in-fourteen-thousand risk of sympathetic ophthalmia, which materialised and blinded the good eye), and Canterbury v Spence (1972) set the prudent-person standard in the United States. The practical message is universal: document the specific risks discussed with this patient, tailored to their circumstances, and record that alternatives were offered.

Even where breach is admitted, causation often defeats a claim. The core test is the but-for test: would the harm have occurred but for the doctor's breach? If the same injury would probably have happened anyway, the chain is broken and the claim fails.

In orthopaedic practice causation is frequently messy because harm has multiple contributors. Where it is impossible to disentangle the doctor's contribution from other factors but the breach materially contributed to the injury, the law permits a finding of causation on that basis — the principle applied, for example, to cases where a missed deterioration contributed to a worse neurological outcome alongside the original trauma. The claimant need only show the breach materially increased the risk or contributed to the harm, not that it was the sole cause.

The limits of causation matter for the exam. The United Kingdom does not generally allow a claim for the loss of a chance of a better outcome. In Gregg v Scott (2005) the House of Lords held that a patient could not recover for a lost percentage chance of survival; the claimant must prove, on the balance of probabilities, that the negligence caused the actual injury. A reduced statistical prospect of a good result is not, by itself, actionable damage.

Damages are what the claimant is compensated for. They fall into two broad groups. General damages cover non-financial harm — pain, suffering and loss of amenity, including the loss of a limb's function or the ability to work at a hobby. Special damages cover quantifiable financial losses — past and future treatment costs, lost earnings, care needs, and the cost of aids and adaptations. The quantum is driven by the severity and permanence of the injury, its impact on the individual's life, and the cost of making them as whole as the law can.

The medical record is a legal document, and in any later dispute it is the contemporaneous record that the court, the regulator and the expert witnesses will rely on. A well-kept record is your strongest defence; a thin or altered record is an avoidable self-inflicted wound. The standard, common to the UK GMC, the US AAOS and regulators worldwide, is that entries must be contemporaneous, accurate, legible, dated, timed and signed or attributed.

Good documentation records not only what was done but what was thought and said. For a clinic encounter that means the history, the examination, the working diagnosis, the options discussed, the specific risks named, and the agreed plan. For an operation it means a dictated or structured operative note — the procedure, position, approach, findings, implants and sizes (including lot numbers where relevant), specimens sent, blood loss, complications, and closure. For consent it means the risks discussed with this patient, recorded against their name, with any specific concern noted. For handover and telephone calls it means who said what, when, and what was decided.

Three rules around the record are non-negotiable. Never delete or overwrite an entry after the event. Never alter a record retrospectively without making the change fully transparent — a late addition must be clearly marked as an addendum with its own date and time, so the original narrative is preserved. And never make a record for the purpose of litigation; entries written defensively after a complaint is foreseeable are easily recognised and gravely damaging. When something goes wrong, document the clinical facts promptly, factually and without blame or speculation.

Structured handover tools close one of the most litigated gaps — information lost between shifts and teams. ISBAR is the widely adopted standard.

Negligence law focuses on the individual, but modern patient safety takes a systems view. The work of James Reason reframed medical error by separating two kinds of failure. Active failures are the unsafe acts of the people at the sharp end — the surgeon who marks the wrong side, the nurse who draws up the wrong dose. Latent conditions are the distant, organisational failings that make those errors more likely and let them reach the patient — fatiguing rotas, look-alike packaging, missing protocols, a culture that discourages speaking up. Reason's Swiss-cheese model pictures the defences against harm as slices of cheese: each has holes (active or latent failures), and disaster arrives only when the holes momentarily line up so that a hazard passes straight through.

The clinical implication is that error management should strengthen the system, not just punish the person. Most surgeons who harm a patient did not intend to and were not uniquely careless; they were working in a system that allowed an inevitable human slip to reach the patient. This is the rationale for the WHO Surgical Safety Checklist, for sign-in and time-out processes, for double-checks of site and side, and for incident-reporting systems that feed latent failures back into design change. A just culture distinguishes honest error (to be analysed and designed out) from recklessness or deliberate harm (to be sanctioned).

When harm does occur, the ethical and increasingly the legal expectation is open disclosure — an honest, timely explanation of what happened, an apology, and a plan for remediation. Across regulators (the UK GMC, Australian and US bodies) the duty is to be candid with the patient. An apology given in good faith is not, in many jurisdictions, an admission of liability, and candid disclosure consistently reduces rather than increases litigation. Concealment, by contrast, is what converts an understandable adverse event into an indefensible claim.

The medicolegal standard is anchored by professional codes and internationally adopted safety frameworks. These are cited as authority, not as country-specific rules; they converge on the same expectation of competence, candour and patient-centred care.

Global practice varies more in process than in principle. Litigation is most developed in common-law systems (the United Kingdom, Australia, the United States), where the case law above directly governs. In civil-law systems and many lower-resource settings, professional conduct is judged against national medical codes and statutory duties of care, but the substantive standard — reasonable, competent, communicative practice with honest disclosure — is the same. The harmonising force is the international patient-safety movement, the four principles of bioethics, and the near-universal adoption of structured tools such as ISBAR and the surgical checklist. No jurisdiction rewards poor communication or inadequate records.

Everything below condenses the topic for revision and viva practice — the high-yield points, the memory hooks, three worked vivas, and a one-screen cheat sheet.