Translation, Cross-cultural Validity and Reliability of a Danish Version of the Anterior Knee Pain Scale (Kujala-DK)

September 30, 2025 updated by: Martin Lind, Aarhus University Hospital

Translation, Cross-cultural Validity and Reliability of a Danish Version of the Anterior Knee Pain Scale (Kujala-DK)

The Anterior Knee Pain Scale (Kujala) is a questionnaire designed to assess adults with patellofemoral disorders and is widely used in both anterior knee pain and patellar dislocation patients.The questionnaire is a patient-reported outcome measure (PROM), that was developed in 1993 and has been translated and validated into most major languages (e.g. French, Italian, Chinese, German, and Spanish) and has gained wide international acceptance. In a recent systematic review, the Kujala was among the eight most commonly used PROMS for patients with patellofemoral pain. In addition, the Kujala was used in almost 80% of studies of patellofemoral instability/dislocation.

The Kujala has been widely used in Denmark during the last 15 years, but surprisingly it has not been translated and validated in Danish according to international guidelines. The translation of the Kujala into Danish will stimulate to more valid and precise results of the Kujala questionnaire in both patients with anterior knee pain and patients with patellar dislocation

The aim of this study is to cross-cultural translate and adapt the Kujala into a Danish Kujala-DK. Secondarily to determine validity and reliability of the Kujala-DK in two consecutive Danish populations of patients with either anterior knee pain or patellar dislocation.

Study Overview

Status

Active, not recruiting

Study Type

Observational

Enrollment (Estimated)

130

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Aarhus N, Denmark, 8200
        • Division of Sports Trauma, Palle Juul-Jensens Boulevard 99

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

MPFL-reconstructed patients.

Description

Inclusion Criteria:

  • Danish speaking
  • MPFL-reconstructed

Exclusion Criteria:

-

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Kujala (Anterior Knee Pain Scale)
Time Frame: Baseline, after 6-8 days
Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)
Baseline, after 6-8 days
Victorian Institute of Sports Assessment - Patella questionnaire (VISA-P)
Time Frame: Baseline
Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)
Baseline
International knee documentation committee (IKDC)
Time Frame: Baseline
Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)
Baseline
Banff patella instability instrument (BPII 2.0)
Time Frame: Baseline
Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2024

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

December 31, 2027

Study Registration Dates

First Submitted

February 6, 2024

First Submitted That Met QC Criteria

February 13, 2024

First Posted (Actual)

February 14, 2024

Study Record Updates

Last Update Posted (Estimated)

October 1, 2025

Last Update Submitted That Met QC Criteria

September 30, 2025

Last Verified

September 1, 2025

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Subscribe