A MULTI-SOURCE PATIENT PAIN DIARY DEMONSTRATES DIFFERENCES BETWEEN PARTIAL AND TOTAL KNEE REPLACEMENT PATIENTS IN PAIN SUBTYPES AND ADDITIONAL CONCOMITANT DIAGNOSES AFFECTING OPERATIVE RECOVERY: “PICKING A WINNER” MAY NOT BE AS EASY AS WE THINK

Introduction: The incidence of significant post-operative pain and dysfunction has only relatively recently been fully appreciated, with dissatisfaction rates as high as 30% noted at eighteen months post-operatively. Clinical observation suggests significant contributions of pre-existing patient factors are frequently ignored or not quantified.