Two year follow-up comparing computer assisted versus freehand TKR on joint stability, muscular function and patients satisfaction

Computer assisted (CAS) knee surgery has been established in clinical routine. There is still no study that investigates clinical outcome. Fifty patients who received a primary total knee replacement 2 years before were investigated. These patients were divided into two groups of matched-pairs; grou...

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Bibliographic Details
Published in:Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2009-03, Vol.17 (3), p.228-232
Main Authors: Lüring, C., Oczipka, F., Perlick, L., Tingart, M., Grifka, J., Bäthis, H.
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Arthroplasty, Replacement, Knee - instrumentation
Arthroplasty, Replacement, Knee - methods
Computers
Female
Flexibility
Fluoroscopy
Follow-Up Studies
Humans
Joint Instability - diagnostic imaging
Joint Instability - physiopathology
Knee
Knee Joint - diagnostic imaging
Knee Joint - physiopathology
Knee Joint - surgery
Knee Prosthesis
Knees
Legs
Male
Matched-Pair Analysis
Medicine
Medicine & Public Health
Middle Aged
Muscle Strength
Orthopedics
Patient Satisfaction
Patients
Prosthesis Design
Prosthesis Implantation - instrumentation
Prosthesis Implantation - methods
Range of Motion, Articular
Retrospective Studies
scoring
Stability
Statistics
Surgery
Surgery, Computer-Assisted
Treatment Outcome
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Summary:Computer assisted (CAS) knee surgery has been established in clinical routine. There is still no study that investigates clinical outcome. Fifty patients who received a primary total knee replacement 2 years before were investigated. These patients were divided into two groups of matched-pairs; group A was operated in the freehand technique and group B with support of a computer system. We compared Womac score, Knee Society score, range of motion, leg alignment, knee stability and isokinetic muscle strength. We found similar results for WOMAC, Knee Society score and isokinetic muscle force. Stability and range of motion revealed slightly better values for the CAS group. A statistically significant difference could only be demonstrated for postoperative leg alignment. Two years after freehand versus computer assisted TKR we found slightly better values for range of motion and ligamentous stability. Only postoperative leg alignment was statistically better in the CAS group.
ISSN:0942-2056
1433-7347
DOI:10.1007/s00167-008-0644-5