e226 Mechanical versus Kinematic Alignment in Obese Patients Undergoing Total Knee Arthroplasty: Do Tibial Stems Effect Aseptic Tibial Loosening Rates?

e227 The Impact of Constraint on Revision after Primary Total Knee Arthroplasty for Osteoarthritis; A Ten Year Review of 113,001 Cases using the Most Commonly Implanted Knee System from the UK National Joint Registry

e228 Cementless TKA Using an Ultra-Conforming Tibial Bearing: Outcomes at Minimum 5-year Follow-up

e229 Parkinson’s Disease as a Risk Factor for Inpatient Postoperative Complications after Total Knee Arthroplasty

e230 Trabecular Metal-Backed Tibial Components in Primary Total Knee Arthroplasty; Are they the Holy Grail?