ABSTRACT
Resumen La prevalencia global de diabetes mellitus (DM) aumenta cada año y, con ella, sus complicaciones. La afección del pie relacionada con DM se ha convertido en una de las principales causas de morbilidad y discapacidad. Los hallazgos más frecuentes son las alteraciones cutáneas y musculares, la arterioesclerosis y el edema óseo. Las complicaciones son la osteomielitis y la neuroartropatía, siendo causas importantes de amputación. El estudio imagenológico se inicia con radiografía (Rx), que permite descartar anomalías óseas y articulares, presencia de cuerpos extraños o alteraciones del tejido blando. Después de la Rx, la resonancia magnética (RM) es la modalidad de elección para la evaluación de la osteomielitis e infección de tejidos blandos del pie. Aunque esas afecciones comparten algunas características clínicas y de imagen con otros trastornos, el conocimiento de sus hallazgos distintivos permite al radiólogo contribuir al diagnóstico oportuno y correcto, con el fin de proporcionar al clínico información adecuada.
Abstract The global prevalence of Diabetes Mellitus (DM) tends to increase over the years, along with its complications. Diabetes related foot disease has become one of the leading causes of morbidity and disability. The most frequent findings are skin and muscle disorders, arteriosclerosis and bone marrow edema. Complications are osteomyelitis and neuroarthropathy, being important causes of amputation. The imaging study begins with radiography, which allows to rule out bone and joint abnormalities, presence of foreign bodies or soft tissue alterations. After radiography, magnetic resonance imaging (MRI) is the chosen modality to study osteomyelitis and soft tissue infection of the foot. Although these conditions share some clinical and imaging characteristics with other disorders, to know the distinctive findings allows the radiologist to contribute to get a timely and correct diagnosis, providing as well an appropriate information to the clinician.
ABSTRACT
OBJECTIVE: To assess the position and movements of the hyoid bone during deglutition in patients with open bite. METHODS: Thirty-six subjects were divided into 2 groups according to the presence of anterior open bite. The open bite group (OBG) and control group each comprised 18 patients with a mean overbite of -4.9 +/- 1.9 mm and 1.9 +/- 0.7 mm. The position of the hyoid bone during the 4 stages of deglutition was evaluated by measuring vertical and horizontal movement of the bone. RESULTS: Interactions of group and stage showed no significant effect on the measurements (p > 0.05). However, when group and stage were evaluated individually, they showed significant effects on the measurements (p < 0.001). In OBG, the hyoid bone was more inferiorly and posteriorly positioned, and this position continued during the deglutition stages. CONCLUSIONS: The hyoid bone reaches the maximum anterior position at the oral stage and maximum superior position at the pharyngeal stage during deglutition. Open bite does not change the displacement pattern of the bone during deglutition. The hyoid bone is positioned more inferiorly and posteriorly in patients with open bite because of released tension on the suprahyoid muscles.