10-year survival of total ankle arthroplasties.
Summary of "10-year survival of total ankle arthroplasties."
Background and purpose There is an ongoing need to review large series of total ankle replacements (TARs) for monitoring of changes in practice and their outcome. 4 national registries, including the Swedish Ankle Register, have previously reported their 5-year results. We now present an extended series with a longer follow-up, and with a 10-year survival analysis. Patients and methods Records of uncemented 3-component TARs were retrospectively reviewed, determining risk factors such as age, sex, and diagnosis. Prosthetic survival rates were calculated with exchange or removal of components as endpoint?excluding incidental exchange of the polyethylene meniscus. Results Of the 780 prostheses implanted since 1993, 168 (22%) had been revised by June 15, 2010. The overall survival rate fell from 0.81 (95%
CI:
0.79?0.83) at 5 years to 0.69 (95%
CI:
0.67?0.71) at 10 years. The survival rate was higher, although not statistically significantly so, during the latter part of the period investigated. Excluding the STAR prosthesis, the survival rate for all the remaining designs was 0.78 at 10 years. Women below the age of 60 with osteoarthritis were at a higher risk of revision, but age did not influence the outcome in men or women with rheumatoid arthritis. Revisions due to technical mistakes at the index surgery and instability were undertaken earlier than revisions for other reasons. Interpretation The results have slowly improved during the 18-year period investigated. However, we do not believe that the survival rates of ankle replacements in the near future will approach those of hip and knee replacements?even though improved instrumentation and design of the prostheses, together with better patient selection, will presumably give better results.
Affiliation
Department of Orthopedics , Falun Central Hospital and Center for Clinical Research Dalarna , Falun.
Journal Details
This article was published in the following journal.
Name: Acta orthopaedica
ISSN: 1745-3682
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22066551
- DOI: http://dx.doi.org/10.3109/17453674.2011.636678
Medical and Biotech [MESH] Definitions
Ankle Injuries
Harm or hurt to the ankle or ankle joint usually inflicted by an external source.
Arthroplasty, Replacement, Ankle
Replacement of the ANKLE JOINT.
Graft Survival
The survival of a graft in a host, the factors responsible for the survival and the changes occurring within the graft during growth in the host.
Survival
Continuance of life or existence especially under adverse conditions; includes methods and philosophy of survival.
Foot Joints
The articulations extending from the ANKLE distally to the TOES. These include the ANKLE JOINT; TARSAL JOINTS; METATARSOPHALANGEAL JOINT; and TOE JOINT.
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