US8012214B2 - Joint prosthesis - Google Patents
Explantation of joint prosthesis definition - Arceuus
Posterior referencing and down sizing femur 2. Internal rotation femur / medial notching Results Ritter et al JBJS Am 2005 - 325 / 1098 (30%) notched femurs with 5 year follow up - only 2 supracondylar fractures both in femurs that were't notched Fracture location Femur - proximal to femoral prosthesis - distal to femoral prosthesis / reduced amount of distal bone for fixation Tibia Prosthesis stability Bone stock Suitability of femoral implant for IMN Indication For minimally displaced fractures Results High rates of nonunion / malunion / stiffness - Better outcomes with operation unless significant co-morbidities 1. Lateral locking plate 2. Retrograde IM nail 3. Anterograde IM Nail 4. Revision TKR Technique Minimally invasive technique - may need unicortical screws distally Results Kolb et al J Trauma 2010 - 19 patients treated with LISS plate - 2 delayed union - otherwise good union rate with minimal complications and good ROM Streubel JBJS Br 2010 - compared proximal fractures to distal (beyond the femoral prosthesis) - showed similar healing rates in each group treated with locking plates Complications Non union Issue May be biomechanically superior Have to open TKR to perform operation - risk deep infection Indications Technically feasible - CR knees contra-indicated - must have sufficient sized hole in PS femoral component - consult company as to suitablity - small diameter nail Technique Minimum intercondylar distance of 12 mm - AGC 18MM - PFC = 20MM - Genesis = 20MM Usually remove polyethylene component - replace after nail - usually need new poly Indications - sufficient bone above implant for distal locking Issues - stress riser between femoral implant and nail - must ensure correct alignment Indications - very distal fracture - insufficient bone stock - loose prosthesis Components - stemmed, constrained implant - tumour prosthesis Case 1
Causes of Infection Associated with Prosthetic Joints
The Motec® Wrist Joint Prosthesis has been designed specifically for high demand patients, with the objective to provide a strong, stable, mobile and pain free wrist while minimizing the risk of luxation, loosening and osteolysis.