. Radiography and radio-therapeutics . d. The ulnar epiphysis has not yetappeared. The os magnum aud unciform, semi-lunar and cuneiform bones are also shown. Thepisiform is not shown. Note also the centre forthe proximal end of the metacarpal bone of thethumb. into the joint should also be remembered in relation to the times at whichtheir epiphyses join the diaphyses. The internal epicondyle is not a partof the lower epiphysis of the humerus, but is formed from a separate centreof ossification. In an X-ray picture it is seen as a small, oval mass, higherup on the inner side of the humerus, and
. Radiography and radio-therapeutics . d. The ulnar epiphysis has not yetappeared. The os magnum aud unciform, semi-lunar and cuneiform bones are also shown. Thepisiform is not shown. Note also the centre forthe proximal end of the metacarpal bone of thethumb. into the joint should also be remembered in relation to the times at whichtheir epiphyses join the diaphyses. The internal epicondyle is not a partof the lower epiphysis of the humerus, but is formed from a separate centreof ossification. In an X-ray picture it is seen as a small, oval mass, higherup on the inner side of the humerus, and intimately connected with theinternal condyle. The epiphysis of the head of the radius is seen as a smalldisc, just above the upper end of the bone. In a lateral view of the jointat about five years the lower epiphysis of the humerus appears to be semi-lunar in shape, fitting closely to the lower end of the shaft. At a later agethe parts become accentuated, and great care must be exercised in distin- THE ELBOW AND SHOULDER JOINTS 233.
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