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Journal of Bone and Joint Surgery, 1942;24:857-869.
© 1942 by The Journal of Bone and Joint Surgery, Inc

THE OBTURATOR SIGN AS THE EARLIEST ROENTGENOGRAPHIC SIGN IN THE DIAGNOSIS OF SEPTIC ARTHRITIS AND TUBERCULOSIS OF THE HIP

Hans W. Hefke M.D.1 and Vernon C. Turner M.D.1

1 Milwaukee Children's Hospital

1. The normal appearance of the obturator shadow is described.

2. In certain types of hip pathology the obturator shadow becomes obscured, or it becomes widened with a more curved border. This is called a positive obturator sign.

3. The greatest value of this sign is in the early roentgenographic diagnosis of septic hip disease.

4. It is of some importance in the early diagnosis of tuberculosis of the hip.

5. It is not present in fractures about the hip, osteochondritis, and other pathological conditions of the hip.


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