Despite improvements in technique and technology for total knee arthroplasty (TKA), anterior knee pain impacts patient outcomes and satisfaction. Addressing the prosthetic and surgical technique related causes of pain after TKA, specifically as it relates to anterior knee pain, can aid surgeons in addressing these issues with their patients. Design features of the femoral and patellar components which have been reported as pain generators include: Improper femoral as well as patellar component sizing or designs that result in patellofemoral stuffing; a shortened trochlear groove distance from the flange to the intercondylar box; and then surgical technique related issues resulting in: Lateral patellar facet syndrome; overstuffed patella/ flange combination; asymmetric patellar resurfacing, improper transverse plane component rotation resulting in patellar subluxation/tilt. Any design consideration that allows impingement of extensor mechanism anatomical elements has the possibility of impacting outcome by becoming a pain generator. As the number of TKA procedures continues to increase, it is increasingly critical to develop improved, evidence based prostheses that maximize function and patient satisfaction while minimizing pain and other complications. MINIREVIEWSSubmit a

The scores obtained with the paper, touch screen, and web-based modes of the five questionnaires demonstrated excellent agreement. Thus, touch screen and web-based formats can be used to collect and track patient outcome data. Use of electronic formats of these questionnaires will facilitate a more efficient and reliable data collection process.

A second trial of an SSRI after an initial SSRI treatment failure was often unsuccessful in children and adolescents with PDDs. Activation side effects were common. Because alternative treatments in this population are limited, a second trial of an SSRI may still be considered. The study was limited by its retrospective design and by its small sample size.