Bicruciate retaining tibial implant system

摘要

A bicruciate retaining tibial implant baseplate (100) includes a tibial baseplate with medial and lateral condylar portions (110, 105) configured to receive bearing inserts (200). The baseplate includes an anterior bridge (115) connecting the medial and lateral portions. A posterior wall (116) of the anterior bridge may be angled to provide downward force on a correspondingly angled anterior portion of the tibial eminence (345) when the baseplate is implanted. A method of preparing the tibia for implant includes a punch (380) and punch guide (360) configured to both cut the anterior tibial eminence and provide protection to the tibial eminence during resection of the proximal tibia.