Validation of Kujala German

The recruitment status of this study is unknown because the information has not been verified recently.
Verified June 2012 by Medical University Innsbruck.
Recruitment status was  Recruiting
Information provided by:
Medical University Innsbruck Identifier:
First received: December 19, 2011
Last updated: June 25, 2012
Last verified: June 2012

The field of patellofemoral disorders and accordant therapeutical interventions is a high turnover research field. It is important to verify the clinical outcome with appropriate measuring tools. There is evidence that the Kujala score is a reliable and widely used measuring instrument of patellofemoral disorders. Indeed, the Kujala score was already used in many studies investigating patellofemoral disorders - also in german speaking patient groups. Unfortunately, we are not aware of a validated german version of the Kujala score. Other relevant knee outcome scores were already successfully translated into german language and validated by previous investigators.

So, it is the aim of our study to cross-culturally adapt and then to validate the Kujala score for use in German-speaking individuals with patellofemoral instability. It is hypothesized that the german version of the Kujala score shows:

  • High divergent construct validity as determined by significant differences between patients and controls (hypothesis 1)
  • High convergent construct validity as determined by significant correlations with other relevant scoring systems (hypothesis 2)
  • High reliability (hypothesis 3)
  • High responsiveness (hypothesis 4)

Condition Intervention
Validation of Kujala Score German Version in Patients With Patellofemoral Instability and Scheduled MPFL-reconstruction
Procedure: MPFL- Reconstruction

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Cross-cultural Adaptation and Validation of the German Version of the Kujala Score in Patients With Patellofemoral Instability - a Prospective Multi-centric Study

Further study details as provided by Medical University Innsbruck:

Primary Outcome Measures:
  • Kujala Score
  • KOOS (Knee Injury and Osteoarthritis Outcome Score)
  • Marx Activity Scale
  • SF-12 (Short - Form 12)
  • VAS pain
  • Lysholm Score

Study Start Date: November 2011
Groups/Cohorts Assigned Interventions
Patellofemoral Instability Procedure: MPFL- Reconstruction


Ages Eligible for Study:   10 Years to 70 Years
Genders Eligible for Study:   Both
Sampling Method:   Non-Probability Sample
Study Population

Patients with patellofemoral instability & scheduled MPFL-reconstruction


Inclusion Criteria:

  • german speaking
  • MPFL-reconstruction planed

Exclusion Criteria:

  Contacts and Locations
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Please refer to this study by its identifier: NCT01495507

Contact: Michael C Liebensteiner, MD, PhD +43 512 504 80547

Dept. Orthop. Surgery, Medical Univ. Innsbruck Recruiting
Innsbruck, Tyrol, Austria, 6020
Contact: Martin Krismer, Prof.    +43 512 504 22691   
Principal Investigator: Michael C Liebensteiner, MD, PhD         
Sponsors and Collaborators
Medical University Innsbruck
  More Information

No publications provided Identifier: NCT01495507     History of Changes
Other Study ID Numbers: Kuj-Germ-1
Study First Received: December 19, 2011
Last Updated: June 25, 2012
Health Authority: Austria: Ethikkommission processed this record on March 31, 2015