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The Upper Extremity – Supplement (Online Only)


THE HUMERUS

The Proximal Portion of the Humerus

FIGURE 6S-1, A, Fat outlining the subdeltoid bursa. B, Bilateral visualization of the rotator cuff because of surrounding fat in a 29-year-old man.

FIGURE 6S-2, Simulated aseptic necrosis of the humeral head in an elderly patient produced by overlapping of the shadows of the humeral head and scapula. Note variation in width of dense area with changes in position of the shoulder. This appearance is accentuated by a rotator cuff tear.

FIGURE 6S-3, The shadows of the bicipital groove in an adult. Left, External rotation. Right, Internal rotation.

FIGURE 6S-4, The greater tuberosity en face simulating a lytic lesion.

FIGURE 6S-5, Residua of the closing epiphyseal line in a 16-year-old boy.

FIGURE 6S-6, Upper humeral notch in a 13-year-old boy (←). Note also benign cortical defect ( ) and normal glenoid irregularities ( ).

FIGURE 6S-7, Unusual ossicle at the upper end of the humerus.

FIGURE 6S-8, Developmental spurs in a 22-year-old woman simulating those of degenerative joint disease.

FIGURE 6S-9, Deltoid muscle insertion that resembles periostitis.

FIGURE 6S-10, The pectoralis major insertion on T1-weighted MR image.

The Distal Portion of the Humerus

FIGURE 6S-11, Developmental foramen above the medial epicondyle.

FIGURE 6S-12, Simulated fractures produced by soft tissue folds.

FIGURE 6S-13, A, Apparent displacement of the ossification center for the capitellum as a result of poor positioning of the forearm. B, Proper positioning shows normal relationships.

THE FOREARM

The Proximal Portion of the Forearm

FIGURE 6S-14, Spur at the olecranon in a 5-year-old child, probably representing modeling to receive the apophysis, which is not yet ossified.

FIGURE 6S-15, Probable bone island in the proximal portion of the ulna.

FIGURE 6S-16, Bilaterally symmetric separate nuclei of ossification for the olecranon process in a 13-year-old boy.

FIGURE 6S-17, Small cleft in the radial metaphysis in a 16-year-old girl, which should not be mistaken for a fracture.

FIGURE 6S-18, Ossification center at the tip of the coronoid process of the ulna (os cubiti anterius) in an adolescent.

FIGURE 6S-19, Ossicle at the tip of the coronoid process in a 12-year-old child. Large arrow indicates the ossification center for the medial epicondyle in lateral projection.

FIGURE 6S-20, Partially fused ossicle at tip of the coronoid process of the ulna.

FIGURE 6S-21, Tendinous calcification at the coronoid process in the origins of the flexor digitorum superficiale (←) and at the insertion of the triceps tendon ( ). Such calcifications should not be mistaken for traumatic sequelae.

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