A known complication and a mistake look the same at first.

Surgery carries risks that materialize even when everything is done properly, which is what the consent form you signed was about. So the first question in any surgical claim is not whether you were harmed. It is whether the harm was a recognized risk of a competently performed operation, or the result of care that fell below the standard. From a hospital bed those two feel identical, and the operative record usually distinguishes them.

Some errors need no expert to identify. Operating on the wrong site, leaving an instrument or sponge behind, or a procedure performed on the wrong patient are failures no explanation covers. Most claims are less obvious than that: a nerve or organ damaged through poor technique, or a post-operative complication nobody acted on.

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Surgical Error Claims & Legal Guidance - Zayouna Law Firm
Surgical Errors

Consent, and what you were told

There is a second route in surgical cases that has nothing to do with technique. A surgeon has to disclose the material risks of the procedure and the reasonable alternatives to it, including doing nothing. If a risk you were never told about materialized, and you would have declined the operation had you known, that can support a claim even where the surgery itself was competent.

The test is not what you say now, with the outcome in front of you. It asks what a reasonable person in your position, with your particular circumstances, would have decided had the risk been properly explained. That keeps hindsight out of it and makes the consent discussion itself the evidence: what was disclosed, when, whether there was time to consider it, and whether the note in the chart reflects a real conversation or a signature collected on the way into theatre.

WHAT A SURGICAL CLAIM CAN COVER

  • Corrective surgery and treatment

    the operations needed to put it right

  • Rehabilitation and attendant care

    therapy, nursing and personal care during a longer recovery

  • Permanent impairment

    nerve damage, organ loss

  • Lost income

    time off work, and work you can no longer return to

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Errors that support a surgical claim

Surgical claims cluster into a small number of patterns. The first three rarely require an expert to establish that something went wrong, though an expert is still needed on the extent of the injury. The last two are where most contested cases sit.

  • Wrong site, wrong side or wrong patient surgery
  • An instrument, sponge or surgical item left inside the body
  • Anaesthesia errors, including dosing and failures to monitor during the procedure
  • Nerve, bowel or organ damage
  • Post-operative infection or bleeding that nobody escalated

What proves a surgical error?

The operative report, the anaesthetic record, the nursing notes from recovery, the surgical count, and any imaging taken afterwards. A surgeon in the same specialty reads that record against the standard. Where an item was retained or the wrong site was operated on, the record often establishes the breach on its own.

When the problem appeared later

Plenty of surgical claims are really about what happened after the operation. Infection, internal bleeding and nerve injury usually announce themselves in the days that follow, and the question becomes whether the reported symptoms were investigated or dismissed. A competent operation followed by a neglected complication is still a claim.

How long do you have to sue?

Generally two years from when you knew, or reasonably should have known, that you were harmed by the care. With a retained instrument found years later, that clock can start at the discovery rather than the surgery, subject to the fifteen year outside limit in the Limitations Act, 2002. Get advice before assuming either way.

Claim Process

Our Surgical Error Claim Experience

Anthony Windwar leads these files, obtaining the operative records and consent documentation for expert review. Part of the firm’s medical malpractice practice. Book a free consultation.

1

Results

The operative and anaesthetic records decide most of these files, so the first step is production of the complete chart, not an estimate of value.

2

Relationships

You may still be facing corrective surgery while the claim runs. You deal with the lawyer handling it, and the firm works in several languages with interpreters available.

3

Recovery

Recovery covers the corrective treatment, the longer rehabilitation, and any permanent impairment left behind once treatment has run its course.

Service Areas

Surgical Errors Toronto

Surgical error claims for Toronto patients, including procedures at teaching hospitals and private surgical clinics.

Claims taken from patients across Ontario, including retained item cases discovered years after the original operation.

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FAQS

Common Questions About Surgical errors law.

Can you sue a surgeon for a surgical error?

You can, where the surgery fell below the standard of a reasonably competent surgeon and that failure caused your injury. A recognized complication of a competently performed operation generally isn’t a claim, which is what the consent discussion covers. Wrong site surgery and retained instruments are different, and rarely defensible.

Usually not, if it was properly disclosed and the surgery met the standard. How the complication was managed afterwards can still be a claim.

That can be its own claim. A surgeon must disclose material risks and reasonable alternatives before you consent.

A retained instrument or sponge is rarely defensible, and the limitation clock can start when it’s discovered, not at the surgery.

Possibly. The question is whether your reported symptoms were investigated or dismissed, not where you were when they started.

It depends who erred. Hospitals answer for their own staff such as nurses, while surgeons are usually independent.

Usually years, and no timeline can be promised. The medical malpractice FAQ sets out the stages.

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If you have been injured due to someone else’s negligence, our personal injury lawyers help individuals and families across Ontario understand their legal options and pursue the compensation they deserve.