The patellar shift index: a reliable and valid measure for patellofemoral congruence following total knee arthroplasty with unresurfaced patella
Vahur Metsna, Pirja Sarap, Sigrid Vorobjov, Kaspar Tootsi, Aare Märtson
(AOTT 2013; 47: 323-329) DOI: 10.3944/AOTT.2013.3079