THE PHILIPPINE 



Journal of Science 



B. Tropical Medicine 



Vol. XIII MARCH, 1918 No. 2 



BONE AND JOINT LESIONS OF YAWS WITH X-RAY FINDINGS 



IN TWENTY CASES 1 



By Herman G. Maul - 



{From the Laboratory and X-Ray Department, Department Hospital, 



Manila) 



SEVEN PLATES 



While attending the clinical course of instruction of the grad- 

 uate school of tropical medicine and public health of the College 

 of Medicine and Surgery, University of the Philippines, during 

 the 1916 session, my attention was directed to the study of the 

 painful bone and joint involvements occurring in some cases of 

 yaws. This complaint prevailed among a great number of pa- 

 tients that were subsequently seen in the barrios of Las Pinas 

 and Paranaque. 



Through the courtesies of Doctors Luis Guerrero, Domingo, 

 and Argiielles arrangements were perfected by which a group 

 of one hundred cases of yaws was collected for study. 



My work was confined to the cases suffering from bone or 

 joint lesions. Any one who has attempted such a work among 

 Filipinos realizes that there are certain limitations in obtaining 

 reliable information that might materially affect one's conclu- 

 sions. The first month of the work was spent in gaining the 

 confidence of the patients by frequent visits to their homes, by 

 furnishing free medicine, and by assuring them of no incon- 

 venience and of a cure of the disease. 



The diagnoses of these cases were made by the histories, by 

 the clinical symptoms and manifestations, and by the demon- 

 stration of Treponema pertenue under the dark-field microscope 



1 Read, by permission of the Chief Surgeon, Philippine Department, before 

 the Manila Medical Society, Manila, and authority granted for publication 

 in this Journal August 6, 1917. 



1 First lieutenant, Medical Corps, United States Army. 



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