CLINICAL ARTICLE

 

The MIRA prosthesis

 

 

U Mennen

MMed(Orth), FRCS(Edin), FRCS(Glasg), FCS(SA)Orth, MD(Orth), DSc(Med)

Correspondence

 

 

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ABSTRACT

Osteoarthritis of digital joints, e.g. proximal interphalangeal joints and metacarpophalangeal joints, may need surgical intervention if conservative management has failed to control function loss and/or pain.
The ideal arthroplasty prosthesis should cause minimal loss of bony tissue, should have a high level of congruency, a low degree of constraint and not be technically demanding.
The MIRA prosthesis replaces only the damaged osteoarthritic tissue, is biomechanically sound and respects the all important investing and stabilising capsule-ligamentous and musculo-tendinous structures.

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References

1. Swanson AB. Silicone rubber implants for replacement of arthritic or destroyed joints in the hand. Surg Clin North Am 1968;48:113-27.         [ Links ]

2. Swanson AB. Implant resection arthroplasty of the proximal interphalangeal joint. Orthop Clin North Am 1973;4:1007-29.         [ Links ]

3. Swanson AB. Remodelling phenomena in flexible implant arthroplasty in the metacarpophalangeal joints: long-term study. Clin Orthop Rel Res 1986;205:254-67.         [ Links ]

4. Vainio K. Korrektur der Ulnardeviation der Finger bei chronischer Polyarthritis. Verh Dtsch Orthop Ges, 43d Congress, Hamburg, September 14-17, 1955.         [ Links ]

5. Vainio K, Reiman I, Pulki T. Results of arthroplasty of the metacarpophalangeal joints in rheumatoid arthritis. Reconstr Surg Traumat 1967;9:1.         [ Links ]

 

 

Correspondence:
Prof U Mennen
374 Lawley Street
Waterkloof, 0181 Pretoria
Fax: (012) 344-2276
Email: umennen@icon.co.za