Translation and validation of the new knee society knee scoring system into Spanish: Spanish KSS translation.

Purpose: The aim of the study was to translate and validate the English version of the 'Knee Society Knee Scoring System' developed in 2011 (2011 KSS) into Spanish. This new KSS version considers patient satisfaction and expectations before and after knee arthroplasty. Moreover, the questionnaire allows a better characterization of a younger and more diverse population.

Translation and validation of 'The Knee Society Clinical Rating System' into Spanish.

Purpose: The Knee Society Clinical Rating System (KSS) is a questionnaire evaluating knee function itself and the patient's ability to walk and climb stairs. The aim of our study is to present the validated translation of KSS into Spanish.

Methods: The validated method of translation-retrotranslation was used to translate KSS into Spanish.