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The Geomedic knee prosthesis. A long-term follow-up study. 1993

C J van Loon, and H P Hu, and J R Van Horn, and M C De Waal Malefijt
Institute of Orthopedic Surgery, St Radboud Hospital, University of Nijmegen, The Netherlands.

A retrospective long-term follow-up study of 189 Geomedic total knee arthroplasties in 143 patients was performed. One hundred and eighteen knees were replaced in patients with rheumatoid arthritis and seventy-one knees were replaced in patients with osteoarthritis. Fifty-seven knees were examined clinically with an average follow-up of 11 years. Seventy percent of these knees were painless. Lucent lines at the tibial bone-cement interface were observed in 62% of the follow-up radiographs (81 knees, mean follow-up: 10.5 years). Thirty-four prostheses (18%) were removed, with loosening of the tibial component as the main cause. Retropatellar pain was not a significant problem. The 13-year survival rate was 78%, with implant removal as an endpoint. Radiographically loosened components included, the 13-year survival rate was 58%.

UI MeSH Term Description Entries
D007720 Knee Prosthesis Replacement for a knee joint. Knee Prostheses,Prostheses, Knee,Prosthesis, Knee
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010003 Osteoarthritis A progressive, degenerative joint disease, the most common form of arthritis, especially in older persons. The disease is thought to result not from the aging process but from biochemical changes and biomechanical stresses affecting articular cartilage. In the foreign literature it is often called osteoarthrosis deformans. Arthritis, Degenerative,Osteoarthrosis,Osteoarthrosis Deformans,Arthroses,Arthrosis,Arthritides, Degenerative,Degenerative Arthritides,Degenerative Arthritis,Osteoarthritides,Osteoarthroses
D011474 Prosthesis Design The plan and delineation of prostheses in general or a specific prosthesis. Design, Prosthesis,Designs, Prosthesis,Prosthesis Designs
D011475 Prosthesis Failure Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking. Prosthesis Loosening,Prosthesis Durability,Prosthesis Migration,Prosthesis Survival,Durabilities, Prosthesis,Durability, Prosthesis,Failure, Prosthesis,Failures, Prosthesis,Loosening, Prosthesis,Loosenings, Prosthesis,Migration, Prosthesis,Migrations, Prosthesis,Prosthesis Durabilities,Prosthesis Failures,Prosthesis Loosenings,Prosthesis Migrations,Prosthesis Survivals,Survival, Prosthesis,Survivals, Prosthesis
D012086 Reoperation A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery. Revision, Joint,Revision, Surgical,Surgery, Repeat,Surgical Revision,Repeat Surgery,Revision Surgery,Joint Revision,Revision Surgeries,Surgery, Revision
D005260 Female Females
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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