Navigation Improves Accuracy of Rotational Alignment in Total Knee Arthroplasty
- 1 September 2004
- journal article
- research article
- Published by Wolters Kluwer Health in Clinical Orthopaedics and Related Research
- Vol. 426 (426) , 180-186
- https://doi.org/10.1097/01.blo.0000136835.40566.d9
Abstract
Successful total knee arthroplasty is dependent on the correct alignment of implanted prostheses. Major clinical problems can be related to poor femoral component positioning, including sagittal plane and rotational malalignment. A prospective randomized study was designed to test whether an optical navigation system for total knee arthroplasty achieved greater implantation precision than a nonnavigated technique. The primary variable was rotation of the femoral component in the transverse plane, measured from postoperative radiographs and computed tomography images. Sixty-four patients were included in the study. All patients received the Duracon total knee prosthesis. The patients were randomly divided into two groups: Group C patients had conventional total knee arthroplasty without navigation; Group N patients had total knee arthroplasty using a computer-assisted knee navigation system. Analysis showed that patients in Group N had significantly better rotational alignment and flexion angle of the femoral component than patients in Group C. In addition, superior postoperative alignment of the mechanical axis, posterior tibial slope, and rotational alignment was achieved for patients in Group N. The use of a navigation system provides improved alignment accuracy, and can help to avoid femoral malrotation and errors in axial alignment.This publication has 30 references indexed in Scilit:
- Anatomy of the epicondyles of the distal femurThe Journal of Arthroplasty, 2000
- Reliability of the anteroposterior axis and the posterior condylar axis for determining rotational alignment of the femoral component in total knee arthroplastyJournal of Orthopaedic Science, 1998
- Posterior tilting of the tibial component decreases femoral rollback in posterior‐substituting knee replacement: A computer simulation studyJournal of Orthopaedic Research, 1998
- Wear in retrieved condylar knee arthroplastiesThe Journal of Arthroplasty, 1997
- Patellar Tracking After Total Knee ArthroplastyPublished by Wolters Kluwer Health ,1994
- Radiological analysis of normal axial alignment of femur and tibia in view of total knee arthroplastyThe Journal of Arthroplasty, 1993
- The Effect of Femoral Component Position on Patellar Tracking After Total Knee ArthroplastyClinical Orthopaedics and Related Research, 1990
- Prediction of total knee motion using a three-dimensional computer-graphics modelJournal of Biomechanics, 1990
- Effect of Rotation on the Axial Alignment of the FemurClinical Orthopaedics and Related Research, 1989
- The Knee Society Total Knee Arthroplasty Roentgenographic Evaluation and Scoring SystemClinical Orthopaedics and Related Research, 1989