Subsidence of the tibial component in unicompartmental knee arthroplasty
Diagnosis certain
Presentation
Severe anteromedial pain on weight-bearing, knee stiff, with difficulty achieving full extension eleven months after cementless unicompartmental knee prosthesis.
Patient Data
Gender: Female
Left knee x-ray
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/152376/annotated_viewer_json?_c=1720805049\u0026lang=us"}
Collapse of the tibial component into the cancellous bone with increased anterior slope. The femoral component is normal.
Case Discussion
There are multiple causes of medial tibial subsidence after unicompartmental knee arthroplasty (UKA) such as the alignment of the components, poor bone quality, female sex, and obesity. Cortical coverage of the tibial plateau is essential to prevent the collapse of the tibial component.
Case courtesy Dr.ssa Laura Braccaioli
Unable to process the form. Check for errors and try again.