A 12-item short form of the Knee injury and Osteoarthritis Outcome Score (KOOS-12): tests of reliability, validity and responsiveness
Performance of the HOOS-12 and KOOS-12 instruments for evaluating outcomes from joint replacement surgery
Implications for research and clinical use from a Rasch analysis of the HOOS-12 and KOOS-12
Psychometric properties of the 12-item Knee injury and Osteoarthritis Outcome Score (KOOS-12) Spanish version for people with knee osteoarthritis
https://pubmed.ncbi.nlm.nih.gov/32948971/Does change in language change the properties of a shortened score previously validated in its complete version? Validation of the French versions of the HOOS-12 and KOOS-12 scores in primary knee and hip arthroplasties
https://pubmed.ncbi.nlm.nih.gov/33493653/The KOOS-12 shortform shows no ceiling effect, good responsiveness and construct validity compared to standard outcome measures after total knee arthroplasty
https://pubmed.ncbi.nlm.nih.gov/32300847/