Welcome to the KNee OsteoArthritis Prediction (KNOAP2020) Challenge!

KNOAP2020 is a challenge to identify which knees will develop symptomatic radiographic knee osteoarthritis within 6.5 years follow-up. We will release baseline magnetic resonance imaging (MRI) data, X-ray images, and certain clinical risk factors for this prediction task. We invite all researchers to participate in the KNOAP2020 challenge.

How does it work?

We will provide a test set of 423 knees that do not have symptomatic radiographic osteoarthritis at baseline. Baseline 1.5 Tesla MRI scans, X-ray images, and clinical variables of the knees are available. Your task is to predict which knees will develop incident symptomatic radiographic knee osteoarthritis after 6.5 years follow-up. Algorithms can be trained and tuned on any suitable data (e.g., OAI data). Additionally, we will provide a small set of data (30 knees) with outcome labels.

Each submission will be evaluated against the outcome variable. The results will be published on this website. We will also write up a scientific paper, co-authored with active participants that provide sufficient information.

Important dates

February 17, 2020: Challenge announcement
July 16, 2020: Registration open
August 17, 2020: Test set release
September 30, 2020: Submission system open
January 11 November 30, 2021: Submission deadline
February 25 January 31, 2021: Announcement of the results
June 30 - July 3, 2021: IWOAI workshop and presentation of the challenge results

News and updates

October 12, 2022: The article about this challenge was published in Osteoarthritis and Cartilage journal: https://doi.org/10.1016/j.joca.2022.10.001.
July 1, 2021: The results of the challenge were presented at the IWOAI workshop.
February 25, 2021: The results of the challenge were announced in a webinar.
December 22, 2020: Challenge deadline postponed until January 11, 2021.
December 1, 2020: KNOAP is excited to announce a prize sponsor: ReumaNederland (Dutch Arthritis Foundation).
November 29, 2020: Challenge deadline postponed until December 31.

October 26, 2020: There is still ample time to participate in this challenge! Please follow the instructions to register and to be able submit your predictions.
October 1, 2020: Submission system opened.
August 17, 2020: Test set released.
July 16, 2020: Registration opened.