%0 Journal Article %A Y Al-Arabi %A SD Deo %A SV Prada %T PATIENT GROUPS IN PRIMARY KNEE ARTHROPLASTY: A SIMPLE RISK CLASSIFICATION SYSTEM %D 2012 %J Orthopaedic Proceedings %P 1-1 %V 94-B %N SUPP_III %R 10.1302/1358-992X.94BSUPP_III.BOA001 %U https://doi.org/10.1302/1358-992X.94BSUPP_III.BOA001 %K