Prospective Randomized Trial of Navigated and Conventional TKA
Prospective Randomized Trial of Navigated and Conventional TKA
Evaluation of the component position and kinematics after navigated and conventional Total
 Knee Arthroplasty.
1. Component position, kinematics After skin closure lateral x-rays were done in different
 flexion angles in order to evaluate the kinematic behaviour of the TKA.

 A full-length standing and a lateral radiograph as well as CT scans of the hip, knee and
 ankle joint were performed 5 to 7 days postoperatively before discharge.

 2. clinical outcome Patient sociodemographic and anamnestic data were collected. The
 written interview was complemented by the EuroQol questionnaire (release EQ-5D) and the
 assessment of the patients' functional status (Knee Society Score) one week before
 surgery and 18 to 24 month after surgery.
Inclusion Criteria:

 -  primary or secondary osteoarthritis of the knee

 -  indication to TKA

 -  a mechanical axis between 20° varus and 5° valgus

 -  signed informed consent

 Exclusion Criteria:

 -  previous hemi- or total arthroplasty

 -  severe instability that could not be treated with an unconstrained, cruciate-retaining
 TKA