Introduction of a new mobile-bearing total knee prosthesis: minimum three year follow-up of an RCT comparing it with a fixed-bearing device
Autor: | C. A. F. Dodd, P.A. Butler-Manuel, Andrew Price, David J Beard, John Goodfellow, David W. Murray, Hemant Pandit |
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Jazyk: | angličtina |
Rok vydání: | 2007 |
Předmět: |
Joint Instability
Male medicine.medical_specialty medicine.medical_treatment Knee replacement Prosthesis Design Prosthesis law.invention Randomized controlled trial law medicine Humans Orthopedics and Sports Medicine Range of Motion Articular Arthroplasty Replacement Knee Aged business.industry Middle Aged Arthroplasty Surgery Treatment Outcome Female Implant Knee Prosthesis business Range of motion Oxford knee score Follow-Up Studies Cohort study |
Zdroj: | The Knee. 14(6) |
ISSN: | 1873-5800 0968-0160 |
Popis: | As part of the step-wise validation of a new prosthesis (TMK), we previously published the 1 year results of a randomised controlled trial in patients undergoing bilateral knee replacement [Price A., Rees J., Beard D., Juszczak E. et al. A mobile-bearing total knee prosthesis compared with a fixed-bearing prosthesis. JBJS B 2003;85-B-1:62-7.]. Forty patients had the new mobile-bearing prosthesis implanted in one knee and an established fixed-bearing device in the other (AGC). We now report the 3 year status of these patients and, in addition, review a separate multi-centre cohort of 172 patients who had undergone unilateral arthroplasty with the TMK. No significant differences were found in outcome (American Knee Society Score and Oxford Knee Score) between the two prostheses. The greater incidence of "clicking" in the mobile-bearing knee, reported in the previous review, persisted (TMK=48%, AGC=30%). The presence of this mechanical noise was found to have no relationship with outcome in either of the prostheses. The unilateral cohort study showed an acceptable complication rate for the new prosthesis, although some patients reported subjective instability. The method of controlled introduction of the TMK, of which this constitutes a further step, has allowed us to assess the significance of a reported problem (clicking) and to provide scientific data from which other surgeons can decide about use of the implant. |
Databáze: | OpenAIRE |
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