Micromotion between the half bearings in the interax prosthesis: A roentgen stereophotogrammetric analysis
| Autor: | Raffaella Soavi, I. Loreti, Laura Bragonzoni, Andrea Visani, Maurilio Marcacci, Francesco Iacono |
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| Rok vydání: | 2001 |
| Předmět: |
Male
medicine.medical_specialty Knee Joint Rotation Roentgen stereophotogrammetric analysis medicine.medical_treatment Prosthesis Design Prosthesis Foreign-Body Migration medicine Humans Orthopedics and Sports Medicine Displacement (orthopedic surgery) Range of Motion Articular Femoral component Arthroplasty Replacement Knee Longitudinal axis Aged Fixation (histology) Orthodontics business.industry Middle Aged Osteoarthritis Knee Arthroplasty Surgery Radiography Photogrammetry Female Knee Prosthesis business |
| Zdroj: | The Journal of Arthroplasty. 16:991-997 |
| ISSN: | 0883-5403 |
| DOI: | 10.1054/arth.2001.25560 |
| Popis: | We assessed the migration and movement between the half-bearings of the Interax prosthesis in 18 patients using roentgen stereophotogrammetric analysis (RSA). This study showed movements of the tibial component even in successful knee arthroplasty: 17 prostheses migrated only initially and remained stable after 1 year, whereas 1 prosthesis migrated consistently throughout 3-year follow-up. RSA revealed no or minimal displacement between the half-bearings until the 4-year follow-up, confirming that their fixation to the baseplate was adequate. In the case of loosening, a rotation about the longitudinal axis of 1.3 degrees and a medial-lateral translation of 0.5 mm was observed between the half-bearings. Cold flow was revealed by RSA in the posterior region of the medial half-bearing. |
| Databáze: | OpenAIRE |
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