A NOVEL 3D IMAGING PROCEDURE FOR CALCULATING PROSTHESIS RELATED MEASURES IN TOTAL KNEE ARTHROPLASTY

BackgroundTotal knee arthroplasty (TKA) is a cost-effective surgical procedure for degenerative knee disease and has good long-term results. However, these results are not always related to patient satisfaction and functional outcome. With an increasing demand of surgeons and patients on functioning of total knee implants, the need for adequate objective outcome measures is high. Imaging of the knee is commonly used in clinical practice and research to objectively measure many different outcome parameters concerning the implant, such as alignment and complications.1 However, techniques on comparison of the sagittal contour of the knee before and after implant placement are scarce.GoalTo develop and describe a standardized method for measuring the sagittal contour of the implant in a 3D model of the knee before and after implant placement.MethodsImages of the static knee of a subject are obtained in-vivo using fluoroscopy over a 180° sweep at 15 frames per second (MultiDiagnost Eleva, Philips, The Netherla...