Influence of polyethylene constraint on tibial component fixation in total knee arthroplasty: follow-up report after 5 years |
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| Authors: | Saari Tuuli Uvehammer Johan Carlsson Lars V Regnér Lars Kärrholm Johan |
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| Affiliation: | 2. Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada;3. Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada;4. Division of Health Care and Outcomes Research, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada;6. Department of Public Health, University of Helsinki, Helsinki, Finland;5. Arthritis Program, Division of Orthopaedics, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada;11. Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada;12. Rehabilitation Science Institute, University of Toronto, Toronto, Ontario, Canada;4. From the Department of Cellular and Molecular Pharmacology, University of California, San Francisco (UCSF), California 94158 and;3. the Gladstone Institute of Virology and Immunology, San Francisco, California 94158 |
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| Abstract: | ![]()
The influence of articulating surface design of AMK total knee prosthesis (DePuy, Johnson & Johnson) on migration and radiographic outcome at 5 years was evaluated. The knees were randomly allocated to receive a flat or a concave insert with retention of the posterior cruciate ligament when preoperative deformity was less severe and either a concave or a posterior-stabilized insert with resection of the posterior cruciate ligament when deformity was more pronounced. In 64 knees, migration was measured with radiostereometry. The posterior-stabilized component displayed more varus-valgus tilting than the concave insert. Other statistically significant differences in migration were not seen. Radiolucent lines were frequently seen without differences between prosthesis groups. |
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