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KMID : 0376219800170010077
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Chonnam Medical Journal
1980 Volume.17 No. 1 p.77 ~ p.84
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The Skeletal Age of the Elbow Joint of Twelve-year-old Korean Children
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Moon Eun-Sun
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Abstract
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As a series of the cross-sectional studies of the elbow bone age, 170 12-yearold normal Korean children, comprising 80 boys and 90 girls, were subjected to this study. The maturity state of the six ossification centers of the elbow joint were calculated roentgenographically and classified according to the skeletal scoring system. The comparative study of each score was done, with the following results.
1. In boys, the appearance rate and the skeletal scores of each center were 100% and 5.75 (S.D. 1.35) in radial head, 100% and 7.34 (S.D. 0.82) in capitellum, 100% and 4.81 (S.D. 0.66) in medial epicondyle, indicating that normally these three centers should make appearance by this age. The rate and scores of the other centers were 51.3% and 1.18(S.D. 1.22) in trochlea, 75%and 1.85(S.D. 1.19) in olecranon, and 26.3% and 0.55(S.D. 0.97)in lateral epicondyle.
2. The girl showed 100% appearance rate of all six centers and the skeletal scores of each center were 7.69 (S.D. 0.61) in radial head, 8.16( S.D. 0.93) in capitellum, 5.47 (S.D. 0.72) in medial epicondyle, 3.44 (S.D. 0.68) in trochlea, 3.73 (S.D. 0.73) in olecranon, and 3.47 (S.D. 0.65) in lateral epicondyle, higher rate and scores compared with those of boys.
3. Total skeletal scores were 20.70 in boys and 31.87 in girls and the girls showed score 11.17 higher than the boys.
4. The results of this study are almost similar to that of Muramoto, although our scores, 20.70 in boys and 31.87 in girls were lower, 2.30 and 2.13 each, compared with his 23 and 34.
5. Comparison revealed that the scores of twelve-year-old child are higher, 5.77 and 7.49 each, than those of ten-year-old one.
6. The results of this study can be regarded as a standard for the elbow bone age of Korean children and the comparative study with other data obtained with similar method would help to gain better knowledge on skeletal development.
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