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Journal of Bone and Joint Surgery - British Volume, Vol 90-B, Issue 8, 1039-1044.
doi: 10.1302/0301-620X.90B8.20553  
Copyright © 2008 by British Editorial Society of Bone and Joint Surgery
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Computer-assisted and conventional total knee replacement

A COMPARATIVE, PROSPECTIVE, RANDOMISED STUDY WITH RADIOLOGICAL AND CT EVALUATION

J. Lützner, MD, Orthopaedic Surgeon1; F. Krummenauer, PhD, Professor, Head of Clinical Epidemiology and Health Economy Unit1; C. Wolf, Study Nurse, Trial Coordinator2; K.-P. Günther, MD, Professor, Head of Orthopaedic Department1; and S. Kirschner, MD, Orthopaedic Surgeon1

1 Department of Orthopaedic Surgery
2 Clinical Epidemiology and Health Economy Unit at the Department of Orthopaedic Surgery, University Hospital Carl Gustav Carus, Medical Faculty of the Technical University of Dresden, Fetscherstrasse 74, D-01307 Dresden, Germany.

Correspondence should be sent to Dr J. Lützner; e-mail: Joerg.Luetzner{at}uniklinikum-dresden.de

After obtaining informed consent, 80 patients were randomised to undergo a navigated or conventional total knee replacement. All received a cemented, unconstrained, cruciate-retaining implant with a rotating platform. Full-length standing and lateral radiographs and CT scans of the hip, knee and ankle joint were carried out five to seven days after operation.

No notable differences were found between computer-assisted navigation and conventional implantation techniques as regards the rotational alignment of the femoral or tibial components. Although the deviation from the transepicondylar axis was relatively low, there was a considerable range of deviation for the tibial rotational alignment. There was no statistically significant difference regarding the occurrence pattern of outliers in mechanical malalignment but the number of outliers was reduced in the navigated group.




eLetters:

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Computer-assisted and conventional total knee replacement
Jon V Clarke, et al.
J Bone Joint Surg Br Online, 3 Sep 2008 [Full text]
Authors' reply:
Jörg Lützner, et al.
J Bone Joint Surg Br Online, 6 Oct 2008 [Full text]

(c) British Editorial Society of Bone and Joint Surgery All Rights Reserved
Registered charity no: 209299     Print ISSN: 0301-620X
Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General