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

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.

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This study is active but is not currently recruiting participants.

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Key information

Conditions

Patella Subluxation Joint Diseases Musculoskeletal Diseases Neurologic Manifestations Pain Patellofemoral Pain Syndrome Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

14 year–40 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Division of Sports Trauma, Palle Juul-Jensens Boulevard 99

Aarhus N, 8200, Denmark

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Danish speaking
MPFL-reconstructed

Exclusion criteria

Treatment and study plan

Primary outcomes

Kujala (Anterior Knee Pain Scale)

Time frame: Baseline, after 6-8 days

Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)
Victorian Institute of Sports Assessment - Patella questionnaire (VISA-P)

Time frame: Baseline

Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)
International knee documentation committee (IKDC)

Time frame: Baseline

Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)
Banff patella instability instrument (BPII 2.0)

Time frame: Baseline

Patient reported outcome score. (0-100 (0 = Worst, 100 = Best)

Sponsors and collaborators

Lead sponsor

Aarhus University Hospital

Other

Registry information

Official study title

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

Acronym: Kujala-DK

Important dates

Study start: 2024
Primary completion: 2026
Study completion: 2027
First posted: Feb 14, 2024
Registry last updated: Oct 1, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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