Abstract
The 98 % 10-year survivorship of cemented AGC TKR is regarded as gold standard.(1) The authors attributed their excellent results to the flat-on-flat design and compression-moulded polyethylene.
The aim of this trial is to determine if the type of fixation also influences outcome.
Participants were randomly allocated to either a cemented or cementless hydroxyapatite-coated AGC prosthesis. All patients were assessed with the Hospital for Special Surgery Score (HSS) and radiographs pre- and post-operatively at six weeks, six months and annually.
223 knees were studied with a mean follow-up of 53.4 months (max.10 years).
There were no significant differences between the two groups in post-operative HSS scores or in improvement of HSS scores. There has been no observable migration in either group. There has been 1 case requiring revision from the HAC group and 2 patellar buttons were revised following traumatic separation.
The early results are equally good for both groups with no significant difference in outcome or complication rate between cemented and HA coated fixation.
Honorary Secretary – Mr Roger Smith. Correspondence should be addressed to BASK at the Royal College of Surgeons, 35 - 43 Lincoln’s Inn Fields, London WC2A 3PN
(1) Ritter et al (1995) Flat-on-flat non-constrained compression-moulded polyethylene TKR, Clin. Orth., Vol 321, pp79–85 Google Scholar
