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High Loosening Rate of the Moje Acamo Prosthesis for Treating Osteoarthritis of the Trapeziometacarpal JointFrom the Department of Orthopaedics, Section of Hand Surgery and the Musculoskeletal Research Unit, Holstebro Hospital, Denmark Correspondence: Torben Bæk Hansen, MD, PhD, Assistant Professor, Department of Orthopaedics, Section of Hand Surgery, Regional Hospital Holstebro, Laegaardvej 12, DK-7500 Holstebro, Denmark. E-mail: atbh{at}ringamt.dk. The Moje Acamo carpometacarpal (CMC) implant is an uncemented large ball-and-socket joint made of a ceramic material coated with a bioactive substance (Bioverit) for osseous fixation. Nine Moje Acamo CMC prostheses were implanted into nine patients with primary osteoarthritis of the thumb CMC joint. At 12 months, three implants had been revised because of progressing pain and osteolysis. In the remaining six patients, radiographs have shown progressive osteolysis around both implants in five patients. These poor results mean that we no longer perform this operation and we recommend close follow-up of all cases that have been performed.
Key Words: Moje Acamo osteoarthritis thumb basal joint ceramic implant trapeziometacarpal joint
This version was published on October
1, 2008 Journal of Hand Surgery (European Volume), Vol. 33, No. 5,
571-574 (2008) |
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