PAPrKA: How active are people after knee replacement surgery?

The Physical Activity Patterns after Knee Arthroplasty (PAPrKA) study seeks to learn more about people's recovery after knee replacement. With your help, and through our research, we can support patients and doctors in the future make better informed decisions about knee replacement surgery.

FAQs Video Join Study

About the study

We are inviting people who had a knee replacement between 1^st Jan 2017 and 31^st Dec 2023 and who had tracked their physical activity data to join the PAPrKA study.
In the study, we will bring together with your consent three pieces of information, i.e.:

Information you provide in a survey.
A one-time collection of your physical activity information from either iPhone, Fitbit, Apple Watch or Oura Ring. Physical activity can include things such as steps you take daily, walking, numbers of flights of stairs you climb etc.
Access to your knee replacement surgery information (from the UK National Joint Registry).

The University of Manchester is leading the PAPrKA research study in collaboration with King's College London and with support from the National Joint Registry.

1: Fitness data was tracked before surgery

Who can take part?

Have had total or partial knee replacement between January 2017 and December 2023

Used a smartphone or fitness tracker to track activity before and after the knee replacement surgery. These are: iPhone, Fitbit, Apple Watch, and Oura Ring

Lived in England, Wales, Northern Ireland, Isle of Man, or Guernsey at the time of surgery

Can read and understand English or have support from someone who can

Are happy to give PAPrKA researchers permission to take a copy of your physical activity data and join it with your knee replacement information from the National Joint Registry

What will I have to do?

Check you can take part in the study.
Sign an electronic consent form.
Set up a study account.
Complete up to 4 tasks.

Interested in taking part?

Join Study

Need more help? View our step-by-step guide

Step-by-Step Guide

More Information For full details, see our participant information sheet

Participant Information Sheet

Meet The Team

William G Dixon

Professor of Digital Epidemiology

Ayobami Esther Olanrewaju

PhD candidate in Musculoskeletal

Sabine Van der veer

Professor of Health Informatics

David Wong

A/Prof Health Informatics and Health Data Science

Shuai Shao

Research Associate

Amos Folarin

Senior Software Development Group Leader

Richard Dobson

Professor of Medical Bioinformatics

Mark Wilkinson

Professor of Orthopaedics

Michael Whitehouse

Professor of Trauma and Orthopaedics

Andrew Judge

Professor of Translational Statistics

Coral Stevenson

Project Coordinator

Elaine Mackey

Information Governance Manager

Lynn Laidlaw

Patient and Public Engagement and Involvement

Louise Cook

Programme Manager

Emma Pritchard