1. Nontraumatic fracture of the polyethylene tibial post in a bi-cruciate stabilized total knee prosthesis 
Daan Renson, MD, Wouter Lenaerts, MD, Johan Feyen, MD 
Arthroplasty Today 
Volume 5, Issue 3, Pages (September 2019)
DOI: /j.artd
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2. Figure 1
Preoperative imaging of the right knee in 90° flexion (left) and 115° hyperflexion (right). The red line represents the posterior border of the tibia.
Arthroplasty Today 2019 5, DOI: ( /j.artd )
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3. Figure 2
Intraoperative imaging of the tibial insert. The broken fragment of the polyethylene post was found in the intercondylar notch (a). The anterior (b) and top view (c) of the tibial insert show no additional wear patterns on the articulating surfaces.
Arthroplasty Today 2019 5, DOI: ( /j.artd )
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4. Figure 3
Tibial post mechanism in a conventional TKA (left) and the post-cam mechanism in the BCS design (right).
Arthroplasty Today 2019 5, DOI: ( /j.artd )
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