This study examined the outcomes of ultra-

Ultrasonography has become accepted as a useful imaging modality in the early detection of developmental dysplasia of the hip (DDH). The purpose of this study was to investigate the extent to which ultrasonographic measurements of femoral head coverage correspond to the categories of hip maturity defined by Graf's angle α. The infants in this study (1,037 infants, 2,034 hips) were examined as part of an ultrasound screening program for detecting DDH. We found that femoral head coverage is positively correlated with α angle, and we also found upper and lower threshold values of femoral head coverage (51% and 39%), such that all hips having these values or beyond had mature or pathological development, respectively. For the detection of hips having mature development, this provided a specificity of 100% (by definition) and a sensitivity of 82.6%. For hips having pathological development, specificity was 100% and sensitivity was 79.2%.Résumé L'échographie est une méthode permettant l'analyse et le dépistage des dysplasies de hanches (DDH). Le propos de cette étude est d'analyser la couverture de la tête fémorale, de déterminer si cette couverture permet de définir différentes catégories de maturité des hanches selon l'angle a de Graf. 1037 enfants (2034 hanches) ont été examinés par échographie dans un programme de dépistage de la luxation de hanche (DDH). Nous avons trouvé que la couverture de la tête fémorale était corrélée avec l'angle a de Graf. Nous avons pu déterminer des valeurs repères hautes et basses de couverture de la tête (51% et 39%), de telle sorte que les hanches qui sont soit dans ses valeurs soit en dehors de ces valeurs, ont un développement mature ou pathologique. La spécificité de ce dépistage est de 100% et la sensitivité de 82,6%. Pour les hanches pathologiques la spécificité est de 100% et la sensitivité de 79,2%.

No abstract

This study investigated which anatomic landmarks were most useful for correct and safe incision placement in carpal tunnel surgery. Kirschner wires were attached to the hands to mark previously defined landmarks. The bony attachments of the transverse carpal ligament, which were identified previously, were drawn on an anteroposterior digital x-ray of the hand, with the thumb in full abduction. The relationship between anatomic landmarks and these bony attachments were examined. In all hands, either the line along the third web space or the crease between the thenar and the hypothenar regions, or both, were on the ulnar half of the transverse carpal ligament. During incision placement, we recommend selecting the most ulnar choice between the line drawn along the third web space and the crease between the thenar and hypothenar regions in order to be at safe distance from the recurrent motor branch of the median nerve.

Level IV. Case series.