Characterizing the Magnitude of and Risk Factors for Functional Limb Lengthening in Patients Undergoing Primary Total Knee Arthroplasty.

: There is little data on the magnitude and factors for functional leg lengthening after primary total knee arthroplasty (TKA). : We sought to determine the incidence of and risk factors for functional leg lengthening after primary TKA. : We retrospectively reviewed consecutive unilateral primary TKAs at a single institution from 2015 to 2018.

Three Degrees External to the Posterior Condylar Axis Has Little Relevance in Femoral Component Rotation: A Computed Tomography-Based Total Knee Arthroplasty Simulation Study.

Background: Femoral component rotation in total knee arthroplasty (TKA) has a significant impact on balance and patellofemoral kinematics. However, normal anatomic relationships between rotational axes are poorly understood. As such, we sought to characterize anatomic femoral rotational axes in patients undergoing primary TKA.

High Rate of Re-Revision in Patients Less Than 55 Years of Age Undergoing Aseptic Revision Total Knee Arthroplasty.

Background: There are limited data on the outcomes of revision total knee arthroplasty in young patients. We sought to characterize the re-revision-free survival and risk factors for re-revision in patients less than 55 years who underwent aseptic revision TKA.

Methods: We retrospectively reviewed 197 revision TKAs at a mean follow-up of 5 years.