High Rate of Early Revision After Custom-Made Unicondylar Knee Arthroplasty
| Autor: | Carl T. Talmo, Eliot S. Jia, Jason D. Rand, Brian P. McKeon, Claire E. Robbins, Marie C. Anderson |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Reoperation musculoskeletal diseases medicine.medical_specialty Time Factors Radiography medicine.medical_treatment Osteoarthritis Prosthesis Body Mass Index 03 medical and health sciences 0302 clinical medicine Risk Factors Humans Medicine Orthopedics and Sports Medicine Femur 030212 general & internal medicine Arthroplasty Replacement Knee Aged Retrospective Studies Aged 80 and over 030222 orthopedics business.industry Implant failure Retrospective cohort study Middle Aged medicine.disease Prosthesis Failure Surgery Treatment Outcome Polyethylene Female Aseptic processing Implant Knee Prosthesis business Follow-Up Studies |
| Zdroj: | The Journal of Arthroplasty. 33:S100-S104 |
| ISSN: | 0883-5403 |
| DOI: | 10.1016/j.arth.2018.03.010 |
| Popis: | Background There has been a recent interest in custom-made partial knee arthroplasties to provide patient-specific instrumentation and better fit of the prosthesis. While unicondylar knee arthroplasties (UKAs) have demonstrated good outcomes and durable results in many studies, there is little evidence on outcomes of these custom-made implants. Methods We performed a retrospective review of all custom-made UKAs performed at our institution by one surgeon from 2008 to 2015. We analyzed preoperative demographics, clinical follow-up evaluations, and radiographs and performed an analysis of risk factors including age, gender, height, weight, body mass index, and tibial insert thickness. The incidence of revision surgery, radiographic failures indicating component loosening, and symptomatic clinically failed implants was calculated at an average of 54.0 months of follow-up. Results We analyzed 115 consecutive custom-made medial UKAs from a single surgeon at our institution and found 29 (25.2%) UKAs had failed at an average of 33.1 months after surgery. Reasons for failure included aseptic femoral loosening (10), aseptic tibial loosening (8), loosening of both components (4), infection (3), progression of osteoarthritis (2), pain (1), and dislodged polyethylene insert (1). We found a significant relationship between implant failure and body mass index; no other study variables were statistically significant. Conclusion We found a relatively high rate of aseptic loosening and particularly femoral component loosening in the short- to intermediate-term follow-up period. While further study of larger numbers of custom-made UKA from multiple institutions may help verify these findings, we recommend careful consideration of the use of this implant. |
| Databáze: | OpenAIRE |
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