Introduction Epidemiology most common reason for secondary surgery following total knee arthroplasty Causes may be related to prosthetic design extensor mechanism imbalance asymmetric patellar resection malrotation patellar malpositioning Presentation Symptoms complaints may include feelings of subluxation frank dislocation peri-patellar pain limited flexion Imaging Radiographs recommended views AP used to assess placement of femoral component and Q angle lateral used to assess size and rotation of femoral component tangential used to assess subluxation of patella, placement of patellar component, angle of patellar resection, and patellar tilt findings laterally subluxed patella increased Q angle anterior placement of femoral component asymmetric patellar resection lateral placement of paellar component lateral osteophyte on patella CT best to assess for rotational malalignment Treatment Must appropriately address etiology
Technique Guide Technique guide are not considered high yield topics for orthopaedic standardized exams including the ABOS, EBOT and RC. Revision TKR Orthobullets Team Recon - TKA Instability Technique Guide Technique guide are not considered high yield topics for orthopaedic standardized exams including the ABOS, EBOT and RC. TKA - Parapatellar Approach Derek Bernstein Stephen Incavo Recon - TKA Metal Hypersensitivity Technique Guide Technique guide are not considered high yield topics for orthopaedic standardized exams including the ABOS, EBOT and RC. TKA - Varus Knee with Anterior Referencing and Gap Balancing Technique Derek Bernstein Stephen Incavo Recon - TKA Metal Hypersensitivity
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