gms | German Medical Science

54. Jahrestagung der Norddeutschen Orthopädenvereinigung e. V.

Norddeutsche Orthopädenvereinigung

16.06. bis 18.06.2005, Hamburg

Short and midlong results after MP joint arthroplasty with the cementless, unconstrained Elogenics™ prosthesis in patients with rheumatoid arthritis

Meeting Abstract

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  • corresponding author B. Mayer - Auguste-Viktoria-Klinik; Orthopädisches Krankenhaus, Bad Oeynhausen, Bad Oeynhausen
  • T. Gottstein - Köln
  • F. Hagena - Bad Oeynhausen

Norddeutsche Orthopädenvereinigung. 54. Jahrestagung der Norddeutschen Orthopädenvereinigung e.V.. Hamburg, 16.-18.06.2005. Düsseldorf, Köln: German Medical Science; 2005. Doc05novEP33

The electronic version of this article is the complete one and can be found online at:

Published: June 13, 2005

© 2005 Mayer et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.




In 80% of patients with rheumatoid arthritis the metacarpophalangeal (MP) joints are involved with increasing destruction and loss of function. Silicone arhtroplasty of the MP joints produces a limited range of motion, increasing osteolysis and fractures of the implants. The cementless, unconstrained design of the ElogenicsTM prosthesis is a new concept for treating the MP joints of rheumatoid patients. It will be shown short and midlong results.

Method and Material

In a prospective study 72 ElogenicsTM prosthesis were implanted, 62 in patients with rheumatoid arthritis, osteoarhtritis (n=4), polyarthitis (n=5) and 1 after revision of a silicone implant. The patients were reexamined after an average follow up of 21 months (12-51 months) clinically and radiologically.


The average active range of motion for extension to flexion increased from 0/18/65° before surgery to 0/14/71° after surgery. The remaining ulnar drift was 12° (preoperative 18°). Pain in the verbal analogue scale improved from 2.3 to 1.7 postoperatively. Eight palmar luxations of the implants were recognized. No infection occurred. The X-rays showed a complete osteointegration in all metacarpal components. Radiolucent zones were found in progress only at the basis on the palangeal components without radiologic signs of loosing or sunking.


The short- and midterm results after implantation the cementless, unconstrained ElogenicsTM prosthesis show an improved hand function and pain relieve. The design of the implant may solve the accepted postoperative problem of instability of the MP joints.