Prótesis de rodilla LCS con plataforma rotatoria. Resultados a medio-largo plazo / LCS rotating platform knee prosthesis. Medium- to long-term results

ABSTRACT

Purpose: To review the clinical and radiological results of a series of rotating platform knee arthroplasties with a follow-up of 6¿12 years. Materials and methodsRetrospective study of 133 arthroplasties implanted in our hospital between 1994 and 2001 using the original surgical technique. We applied the Knee Score and the Function Score of the American Knee Society in order to carry out the corresponding clinical assessment and radiological study. ResultsSix (4.5%) prostheses were totally or partially revised (2 cases of infection, 1 rotating platform spin out, one loosening of the tibial component, 1 instability and unidentifiable pain). Another 9 (6.7%) were operated without withdrawing any components (4 cases soft tissue friction, one extraarticular infection, one femoral fracture, one bone calcification resection, one patellar prosthetization and one patellar fracture). All complications occurred before the third year. There was no component wear or significant levels of osteolysis. Mean Knee and Function scores were very high: 90.6 and 86.5 respectively. ConclusionsClinical-radiographic medium- to long-term results for this rotating platform prosthetic design are highly satisfactory, albeit at the expense of a slight increase in the number of early complications (AU)