Before you begin...

We hope the information given within this aid will help you better understand the risks and benefits of joint replacement surgery. This decision aid has been designed using the National Joint Registry (NJR) to help you understand your own risks from surgery using information from people like you.

In order to use the decision aid, we will need to know a few things about you in order to calculate the risks and benefits of surgery you are considering. If you have previously undergone an operation for a joint replacement, the calculated risk may not be as accurate.

If there is anything that you don’t understand after working through the aid, please discuss the options further with your clinician. You may wish to take a printout of the aid results for your consultation. If you have other questions that you would like to answer, please see the useful links menu.


In order to continue, you will need to know:

If you need any help just click the information button to get more information.

Start here

About you

In this section, we will ask some questions about you in order to calculate your personalised risk.

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years old
Please enter a valid age. Calculation is possible for age from 30 to 100.
meters
Please enter a valid height. Calculation is possible for height from 0.5 to 3 meters.
feet and
inches
Please enter a valid height. Calculation is possible for height from 2 feet to 8 feet and 11.9 inches.
kilograms
Please enter a valid weight. Calculation is possible for weight from 20 to 200 kg.
stones and
pounds
Please enter a valid weight. Calculation is possible for weight from 4 stones to 30 stones and 13.9 pounds.

On a scale of 1 to 4, how is your health generally?

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About your surgery

This section will ask some questions about your surgery. You will need the assistance of your clinician for this section.

I am considering...

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How does your hip affect your life?

How does your knee affect your life?

For the next set of questions, think back over the last four weeks.

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