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Knee Surg Sports Traumatol Arthrosc ; 29(4): 1098-1105, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32556436

RESUMEN

PURPOSE: To evaluate the rotational profile of the lower extremity using computed tomography (CT) in accordance with the degree of varus deformity in medial condyle-affected knee joint osteoarthritis (OA). METHODS: This retrospective study included 1036 patients (872 lower extremities) with end-stage knee OA. The coronal alignment of the lower extremity was measured using standing anteroposterior radiography. The CT parameters of femoral anteversion and tibial torsion were assessed in relation to the knee joint. The axes were the femoral neck axis; the distal femoral axis, which was composed of the anterior trochlear axis, the clinical transepicondylar axis, and the posterior condylar axis; the axis of the proximal tibial condyles; and the bimalleolar axis. RESULTS: There was a tendency for increased external rotation of the knee joint parameters in relation to the hip and ankle joints as varus deformity of the lower extremity increased. The relative external rotational deformity of the knee joint in relation to the hip joint had a positive value with a good correlation. The relative external rotational deformity of the knee joint in relation to the ankle joint also demonstrated a positive value with a good correlation. CONCLUSION: The distal femur and proximal tibia (knee joint) tended to rotate externally in relation to the hip and ankle joint, respectively, as the degree of varus deformity increased. This study identified the relationship between lower extremity varus deformity and rotational deformity of knee joints with OA. LEVEL OF EVIDENCE: III.


Asunto(s)
Genu Varum/patología , Osteoartritis de la Rodilla/diagnóstico por imagen , Osteoartritis de la Rodilla/fisiopatología , Anciano , Articulación del Tobillo/fisiopatología , Artroplastia de Reemplazo de Rodilla/métodos , Femenino , Fémur/fisiopatología , Cuello Femoral/fisiopatología , Genu Varum/diagnóstico por imagen , Articulación de la Cadera/fisiopatología , Humanos , Articulación de la Rodilla/fisiopatología , Extremidad Inferior/diagnóstico por imagen , Extremidad Inferior/fisiopatología , Masculino , Osteoartritis de la Rodilla/cirugía , Radiografía/métodos , Rango del Movimiento Articular , Estudios Retrospectivos , Rotación , Tibia/fisiopatología , Tomografía Computarizada por Rayos X/métodos
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