Anterior referencing versus posterior referencing in total knee arthroplasty.

Appropriate femoral component positioning and sizing is essential for proper kinematic function in total knee arthroplasty (TKA). Anterior or posterior referencing (AR or PR) are two major techniques for setting center of rotation and for balancing the sagittal plane of the arthroplasty. Both techniques have advantages and disadvantages.

Incidence of bicompartmental osteoarthritis in patients undergoing total and unicompartmental knee arthroplasty: is the time ripe for a less radical treatment?

We sought to determine the incidence of bicompartmental osteoarthritis among knee replacement patients for possible bone-sparing procedures. In 259 consecutive Knee Registry subjects undergoing total or unicondylar knee arthroplasty, all three compartments of the knee joint were evaluated. Radiographic images and preoperative cruciate ligaments assessment combined with intraoperative cartilage grading using Outerbridge classification was implemented for patients' evaluations.