Pediatric emergency medicine trisk 3478 3478
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third of the bone, with a dislocation at the distal radioulnar joint. These injury
patterns are due to the anatomic relationship of the radius and ulna, with their
points of articulation at the proximal and distal radioulnar joint and
accompanying fibrous interosseous membrane. This relationship is such that
when there is direct trauma to one bone, the force is transmitted to the other,
typically at the points of articulation.
FIGURE 111.26 A Monteggia fracture in a 3-year-old boy. Note that a line drawn along the
axis of the radius would fail to intersect the capitellum (compare with Fig. 111.16 ) .
FIGURE 111.27 Sensory innervation of the wrist and hand. (Reprinted with permission from
Moore KL, Dalley AF, Agur AMR. Clinically Oriented Anatomy . 8th ed. Philadelphia, PA:
Wolters Kluwer; 2018.)
