A comparative study of the medial St Georg Sled and Kinematic total knee arthroplasties. Ten year survivorship

Ackroyd, Christopher E., Whitehouse, Sarah L., Newman, John H., & Joslin, Chris C. (2002) A comparative study of the medial St Georg Sled and Kinematic total knee arthroplasties. Ten year survivorship. Journal of Bone and Joint Surgery: British Volume, 84(5), pp. 667-672.

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We have studied the long-term outcome of 408 primary medial St Georg Sled unicompartmental arthroplasties of the knee and 531 primary Kinematic total knee arthroplasties using survivorship analysis. The operations were performed by a number of surgeons under the supervision of two consultants at one orthopaedic centre. Prospective clinical assessment was carried out before and at 2, 5, 8, 10, 12 and 15 years after operation. Failure was defined as follows: revision or removal of the implant; the presence of moderate or severe pain; or 'worst-case' with all patients lost to follow-up. Cumulative survival rates at ten years were calculated using life tables. The follow-up rate was 97%. At ten years, 25 medial sled arthroplasties and 20 Kinematic knee arthroplasties had been revised. With revision or removal as the survivorship endpoint at ten years there was a success rate of 87.5% for the medial sled and 89.6% for the Kinematic knee arthroplasty. When moderate or severe pain was included these rates became 79.4% for both arthroplasties. There was no statistically significant (p > 0.05) difference between the rates of survival for the two arthroplasties using either of the endpoint criteria. Good or excellent results were recorded for 77.9% of the medial sled knees and 75.1% for the Kinematic knees. The former had 93.8% of cases with a final range of movement in excess of 90 degrees compared with 83.7% for the Kinematic knees (p < 0.01). We conclude that at a single orthopaedic centre in the UK, the St Georg Sled medial compartment arthroplasty for appropriate specific indications offers predictable survivorship at ten years which is comparable with that of the Kinematic total knee arthroplasty.

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ID Code: 5604
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal's website (see link) or contact the author. Author contact details: s.whitehouse@qut.edu.au
DOI: 10.1302/0301-620X.84B5.12404
ISSN: 0301-620X
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > CLINICAL SCIENCES (110300) > Orthopaedics (110314)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2002 British Editorial Society of Bone and Joint Surgery
Deposited On: 27 Nov 2006 00:00
Last Modified: 15 Jan 2009 07:16

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