The data and conclusions of this paper are derived from the study of the records and roentgen examinations of 106 consecutive cases admitted to the New England Peabody Home for Crippled Children with a diagnosis of tuberculosis of the hip.
In 15 per cent it was later found that an incorrect admission diagnosis had been made. It is most important to exclude such cases, as they have in general a much more favorable prognosis than tuberculosis of the hip.The ninety remaining cases were accepted as tuberculosis for one or more of the following reasons:
Positive guinea-pig test from material removed by aspiration or operation. Twenty-nine cases, or 32 per cent, were proved by this method.
Positive evidence of tuberculosis on pathologic examination of material removed at operation. In seventeen of the twenty-two cases in which pathologic material was examined, the histologic diagnosis was tuberculosis. The remaining