General Surgery: Common Areas of Clinical Negligence

General surgical claims rarely turn on whether an operation was technically indefensible in isolation — they far more often turn on what happened around it: the consent conversation beforehand, and how quickly a developing complication was recognised afterwards.

Why Claims Arise in This Area

Most recognised surgical complications — bleeding, infection, leak — are not, by themselves, evidence of negligence; they are known risks of the procedure. The claim usually depends on whether the complication was one that competent technique should have avoided, or whether, once it occurred, it was recognised and escalated within the timeframe a reasonably competent surgical team would have managed.

Common Areas of Negligence:

Wrong-site or wrong-procedure surgery

Despite being a well-established 'never event', wrong-site and wrong-procedure surgery continues to occur, almost always traceable to a breakdown in the WHO Surgical Safety Checklist process — site-marking not completed or not checked at the final 'time out' before incision, or a checklist completed as a formality rather than a genuine safety check.

Retained instruments or swabs

Retained swabs and instruments are the other classic never event in this category, arising from a failure in the surgical counting process — counts not performed, not reconciled against the operative record, or not acted on when a discrepancy was identified. These cases are usually more straightforward on breach, since the counting protocol itself is well defined; the harder questions tend to concern the extent and duration of harm caused by the retained item before it was discovered.

Missed anastomotic leak or bowel perforation

A leaking bowel join or an unrecognised perforation is a life-threatening post-operative complication. Claims typically focus on the post-operative observation period: rising heart rate, temperature, or pain scores that should have prompted urgent reassessment and imaging were instead attributed to normal post-operative recovery, delaying the return to theatre that the deteriorating picture required.

Bile duct injury in laparoscopic cholecystectomy

Bile duct injury during gallbladder removal is one of the most frequently litigated single surgical complications, usually linked to inadequate visualisation of the anatomy in Calot's triangle (the 'critical view of safety') before clips or diathermy are applied. Because the anatomy here is genuinely variable between patients, these claims often turn closely on the operative note and any intra-operative imaging, rather than on the fact of injury alone.

Inadequate consent

Following Montgomery v Lanarkshire Health Board, consent claims no longer turn on whether a standard list of risks was recited, but on whether the patient was told about the risks and reasonable alternatives that a person in their particular position would consider significant. A generic consent form signed shortly before surgery, without evidence of a tailored conversation about material risks specific to that patient, is a common weak point that surfaces once a known complication has occurred.

Delayed diagnosis of the acute abdomen

Appendicitis and other causes of an acute abdomen can present atypically, particularly in children, the elderly, and pregnant patients. Claims commonly arise where worsening abdominal signs were not reassessed promptly enough, allowing a straightforward, low-risk operation to become a much higher-risk one once perforation and peritonitis have set in.

What the Law Requires

As with any clinical negligence claim, a bad outcome is not, of itself, evidence of negligence. The legal test of breach asks whether the care fell below that of a reasonably competent clinician practising in the relevant field at the time (Bolam v Friern Hospital Management Committee), and whether that view would withstand logical scrutiny (Bolitho v City and Hackney Health Authority). Where the claim concerns what a patient was told about risks and alternatives before treatment, the test is different: Montgomery v Lanarkshire Health Board requires that a patient be told of any risk to which a reasonable person in their position would attach significance, judged from the patient's perspective rather than a standard clinician's script. On causation, the claimant must generally show that the breach made a material difference to the outcome — though in some multi-cause or cumulative-harm scenarios, a material contribution to the injury can suffice.

What Good Expert Evidence Establishes

General surgery cases typically need a same-specialty expert to address both the technical standard of the operation itself and the adequacy of post-operative monitoring — two quite different questions that are easy to conflate. Where consent is in issue, the expert's role is narrower: describing what risks and alternatives a reasonably competent surgeon in that field would have discussed, leaving the Montgomery test itself to be applied by the court.

Operative notes, nursing observation charts, and the WHO checklist documentation together usually tell a fuller story than any single record, and are worth requesting as a complete set from the outset.