A longitudinal study of the quantitative evaluation of patella cartilage after total knee replacement by delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) and T2 mapping at 3.0T: preliminary results
| Autor: | Yuji Uchio, Suguru Kuwata, Eiji Fukuba, Taku Tadenuma, Nobuyuki Kumahashi |
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| Rok vydání: | 2013 |
| Předmět: |
Cartilage
Articular Gadolinium DTPA Male musculoskeletal diseases medicine.medical_specialty Knee Joint medicine.medical_treatment Biomedical Engineering Contrast Media Osteoarthritis Magnetic resonance imaging Rheumatology Patella resurfacing medicine Humans Orthopedics and Sports Medicine Longitudinal Studies Arthroplasty Replacement Knee Aged Fixation (histology) Aged 80 and over medicine.diagnostic_test business.industry Cartilage Reproducibility of Results Delayed Gadolinium Enhanced Magnetic Resonance Imaging of Cartilage Patella Osteoarthritis Knee Image Enhancement medicine.disease musculoskeletal system Arthroplasty Treatment Outcome Patella cartilage medicine.anatomical_structure Total knee arthroplasty Female Radiology Implant Tomography X-Ray Computed business human activities |
| Zdroj: | Osteoarthritis and Cartilage. 21(1):126-135 |
| ISSN: | 1063-4584 |
| DOI: | 10.1016/j.joca.2012.09.004 |
| Popis: | SummaryObjectiveTo characterize the quantitative changes of patella cartilage over time after total knee arthroplasty (TKA) by delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) and T2 mapping at 3.0T.MethodTwenty-six knees of 26 patients (23 women and three men, mean age, 75 years) with primary osteoarthritis and osteonecrosis of the knee underwent TKA with a zirconia ceramic implant in this prospective study. Twelve patients without patella resurfacing (NR group) and 14 patients with patella resurfacing (R group) had TKA with cemented fixation. The implant position was examined by radiograph, computed tomography (CT) and magnetic resonance imaging (MRI). The clinical scores were checked pre-operatively, 1 year post-operatively and at the final follow-up. Patella cartilage and its thickness were evaluated pre-operatively and 1 year after TKA by dGEMRIC and T2 mapping in the NR group only. Patella cartilage was divided into eight regions of interest: the deep and superficial layers of the outer lateral and medial half, and the inner lateral and medial half from the central ridge.ResultsThe implant position was appropriate in all cases and clinical scores were not significantly different between the two groups. The post-operative dGEMRIC value of the outer medial half superficial zone in the NR group was significantly decreased compared with the pre-operation value (P |
| Databáze: | OpenAIRE |
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