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Metacarpophalangeal Joint Arthroplasty Based on the Osseointegration Concept

From the Department of Hand Surgery, Malmö General Hospital, Lund University, Lund and the Institute for Applied Biotechnology, Göteborg, Sweden

Correspondence: Göran Lundborg, Department of Hand Surgery, General Hospital, S-214 01 Malmö, Sweden.

The osseointegration concept has been used for fixation of 68 MP joint endoprostheses in 31 patients operated on at the Department of Hand Surgery, Malmö General Hospital during the period 1988–1992. The indications were rheumatoid arthritis (50 joints), primary osteoarthrosis (three joints), post-traumatic osteoarthrosis (three joints), post-traumatic osteoarthrosis (five joints), post-infectious osteoarthrosis (seven joints) and joint deformities secondary to spastic conditions (three joints). The average follow-up time was 2.5 years (6–54 months). The surgical procedure included resection of the joint followed by introduction of screw-shaped titanium fixtures into the bone marrow cavities of the metacarpal and the phalangeal base. Rheumatoid cases usually required grafting of cancellous bone and marrow from the iliac crest. At the same time a flexible constrained silicone spacer was connected to the titanium fixtures in such a way as to allow later replacement of the spacer if accessory. The average active range of motion (ROM) was 57° in the rheumatoid cases and 50° in all cases. Radiological and clinical osseointegration occurred in every case, and there were no clinical signs of loosening. In four cases (6%) there was a fracture of the joint mechanism. Patient satisfaction was high, with pain relief, increased range of motion, improved hand function and good cosmetic appearance.

Journal of Hand Surgery (British and European Volume), Vol. 18, No. 6, 693-703 (1993)
DOI: 10.1016/0266-7681(93)90224-4


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