THE SHORT ANSWER
No, all treatment carries risk, and some conditions get worse despite good care. What matters is the quality of the care, not only the result. A poor outcome may still be negligence if the technique fell below an acceptable standard, if harm was not spotted and treated, or if the risk was never explained to you.
This is the question we are asked more than any other, and it is the one that decides most cases before anything else is looked at.
The short version is that a poor result on its own is not enough. What follows explains what tips a bad outcome over into something that may be a claim. It is part of our full guide to medical negligence claims.
Why a poor result on its own is not negligence
All treatment carries some risk, some treatments do not work. Some operations have complications that occur even when everything is done properly. Some conditions get worse whatever anyone does.
The law recognises all of this. It does not promise you a good outcome, because no one can. It asks whether the care you received was of an acceptable standard.
That distinction can feel unfair when you are living with the result. It is worth saying plainly: the fact you were harmed is real and it matters, even where the law would not call it negligence.
When a known risk may still be negligence?
Take nerve damage after a hip replacement. If it was a recognised risk, you were warned about it beforehand, and the operation was carried out properly, it is unlikely to be negligence.
The picture changes if any of the following applies:
• the surgical technique fell below an acceptable standard
• the damage was not spotted and treated afterwards when it should have been
• nobody told you about the risk before you agreed to the treatment
The third point catches people out. A risk can materialise through nobody’s fault and the claim can still arise from the conversation that should have happened before it.
Does “recognised complication” settle the matter?
No, and this is one of the most misunderstood points in the whole subject.
Being told that what happened was a recognised complication is often the end of the conversation with the hospital. It is not the end of the legal question. A recognised complication can still be caused by substandard care, or made worse by how it was handled afterwards.
If you have been told your injury was a recognised complication, that does not by itself rule out a claim. It tells you the outcome was foreseeable, it does not tell you whether the care was acceptable.
The only way to know which it was is to look at the records and have an independent expert in the same specialty review what was done, that is what the first stage of a claim involves.
Were you told about the risks?
Since 2015, the law has required doctors to explain the risks that would matter to someone in your position, and any reasonable alternatives, before you agree to treatment.
That is a patient-centred test, not a professional one. The question is not what doctors generally think is worth mentioning. It is what would matter to a person in your circumstances, which may include a risk that is statistically small but significant for your job, your family or your life.
Signing a consent form does not settle this either. What matters is the conversation that the form was supposed to record, there is a fuller explanation in our guide to informed consent.
Related guides - Read here
Still not sure which one yours was?
That is the question we exist to answer, and it is free to ask. Tell us what happened and we will look at it honestly. If it looks like a known risk that was handled properly, we will say so.
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Possibly. A recognised complication can still be caused or made worse by care that fell below an acceptable standard, and you may also have a claim if the risk was never explained to you. Being told it was a known complication does not close the question.
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Not by itself, a consent form records that a conversation took place. What matters is whether the risks that would matter to someone in your position, and any reasonable alternatives, were actually explained to you before you agreed.
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No. Revision surgery is sometimes planned and sometimes needed for reasons that involve no fault at all. Whether the first operation fell below an acceptable standard is a separate question that needs the records and an independent expert opinion.