RESUMEN
An unusual case of a double fracture of the medial left clavicle in a 15-year-old male hockey player is presented. One fracture was an epiphyseal separation through the medial growth plate and the second a transverse fracture of the medial one-third of the same clavicle with displacement of the fragment into the chest. Radiographic and computed tomographic descriptions are presented. The injury was managed with open reduction and fixation. A discussion of sternoclavicular epiphyseal separations and intrathoracic displacement is given, with a review of the literature.
Asunto(s)
Traumatismos en Atletas/diagnóstico , Clavícula/lesiones , Fracturas Óseas/etiología , Hockey , Deportes , Adolescente , Fijación de Fractura , Fracturas Óseas/diagnóstico , Humanos , MasculinoRESUMEN
Displaced extension type supracondylar fractures of the humerus are associated with neurovascular injuries and malunion (cubitus varus). Reduction is not usually difficult during the first few hours, but it is a problem to maintain. After reduction, the shoulder is placed in abduction external-rotation with the elbow flexed under the C-arm. This position locks the proximal segment of the fracture, and the posteromedially rotated distal segment can then be brought back into an anatomic position under the "medial pillar." In this position, an excellent lateral view is obtained and the "fish tail" deformation can be corrected. Crossed percutaneous K-wires are introduced to maintain reduction. An anteroposterior radiograph can then be freely obtained, and there is no need for hyperflexion at the elbow. Twenty-six children were treated between 1987 and 1992. Excellent results were obtained.
Asunto(s)
Hilos Ortopédicos , Fracturas del Húmero/cirugía , Niño , Preescolar , Articulación del Codo/diagnóstico por imagen , Articulación del Codo/fisiología , Femenino , Humanos , Fracturas del Húmero/diagnóstico por imagen , Masculino , Radiografía , Rango del Movimiento ArticularRESUMEN
The aim of this study is to analyse the differential visual patterns of expert and non-expert tennis players preparing to return a tennis serve. Two 16 mm films were used for testing purposes; 27 services were delivered and recorded on each film. The subjects had to identify verbally the type of serve delivered. During film viewing, eye movements were recorded by an Eye Mark Recorder NAC V. Results revealed that the expert players seem to use cues from the general position of the body during the ritual phase and cues from the racquet position during the execution phase.