Distal Femur Locking Plates Fit Poorly Before and After Total Knee Arthroplasty

JOT Most Popular Articles - 8s ago Preview

 
 
• AUTO POST
 
• SAVE TO EVERNOTE

Objective: To evaluate the fit of distal femur locking plates. Secondarily, we sought to compare plate fit among patients with and without a total knee arthroplasty (TKA). Design: Retrospective. Setting: University hospital. Intervention: Standard length precontoured distal femur locking plates from 4 manufacturers were digitally templated onto each patient's pre-TKA and post-TKA radiographs. Main Outcome Measurements: The maximum distance from the plate to the lateral femoral cortex (plate-bone distance) was measured in the metaphyseal region. Mean plate-bone distances were compared between manufacturers and between pre-TKA and post-TKA radiographs. Results: All implants tested were undercontoured in all patients. Plate-bone distances ranged from 6.6 ± 0.4 mm to 8.0 ± 0.4 mm (mean ± SE) pre-TKA and 8.2 ± 0.3 mm to 8.6 ± 0.3 mm after TKA, indicating worse fit after arthroplasty (P