Clinical, Functional, and Midterm Survival Analysis on Sigma Curved Plus Ultracongruent Polyethylene Insert in Primary Total Knee Arthroplasty: A Retrospective Study.

Background: Posterior-stabilized (PS) total knee arthroplasty (TKA) poses problems such as the need for intercondylar notch bone resection as well as cam and post wear and patella clunk. Owing to its heightened anterior profile, an ultracongruent polyethylene insert prevents the excessive posterior translation of tibia in the case of a deficient or scarified posterior cruciate ligament (PCL). This study aimed to determine whether an ultracongruent insert provides satisfactory clinical and functional outcomes and midterm survival benefits.

Simultaneous Bilateral Distal Femur and Tibia Periprosthetic Fractures after Total Knee Arthroplasty: A Rare Case Report.

Introduction: Incidence of periprosthetic fractures is increasing with the rising number of total knee arthroplasties performed every year. The management of such fractures is challenging due to multiple factors. We reported a rare case with simultaneous bilateral distal femur and tibia periprosthetic fractures managed with open reduction and internal fixation (ORIF) and healed uneventfully.