From the case:
Illustration for lateral patellar dislocation
{"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/27449/annotated_viewer_json?lang=us"}
Figure 1: normal orientation of patellofemoral components in extension.
Figure 2: impaction of medial aspect of patella against lateral femoral condyle following injury.
Figure 3: recoiling of patella.
Case Discussion
Sites for retinacular injury are as follows:
- at patellar insertion,
- at midsubstance, or
- within vastus medialis obliquus muscle.
Unable to process the form. Check for errors and try again.