Abstract
The short stem titanium prothesis preserves the femoral neck. No reamer and no rasp is used for the implantation. Two times compression of the bone with a compressor and with the prothesis it self continues the principle of bone retention.
Preserving the femoral neck and compression of the bone lead to an high anchorage and the best primary stability. This is mandatory for safe osseo integration.
Except metal on metal all combinations are suitable. Deltaceramic-Deltaceramic is the most modern possibility.
The high anchored short-stemp leaves enough virgin-bone for any standard prothesis in case of later revision. In 1999 implantation of CFP Prothesis was started in the Endoklinik-Hamburg. Until 2005 2500 prothesis were implanted. A five year follow up of the first hundert cases does not show system corellated failures. An overview of 2400 implants shows a revision rate of 1%. Total exchange procedure was necessary in 8 cases because of deep infection (0,33%). Only very few none fixed stems and cups had to be reviced.
Minimal invasive surgery is well suitable. In our clinic we prefer the posterior aproach.
With six sizes left and right nearly all tipe of bone shape is covered.
Extreme varus or valgus hips are not indicated as well as severe deformaties.
The CFP Prothesis is an good alternative to the CUP Prothesis especially for the young patients with femoral head necrosis which we see in about 10%.
A five year follow up is only really interessting if it has bad results, with goog results it gives us confidence to wait for the ten year results.
Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland
