ILLUSTRATIONS 



Plate I 



Fig. 1. Case 3. Multiple yaw lesions in patella and tibia. One variety of 

 painful joints. 

 2. Case 2. Shows three lesions in the os calcis. This involvement is 

 very frequent and makes walking difficult and painful. 



Plate II 



Fig. 1. Case 1. Shows characteristic joint lesion on the articular surface 

 of the bone involved. 

 2. Case 3. Ankylosis following chronic joint lesion of yaws. 



Plate III 



Fig. 1. Case 3. Shows contracture on flexure surface of second finger of 

 right hand. Multiple bone lesions. Large cutaneous lesion and 

 thickening of soft tissues on the palmar surface of index finger 

 of right hand. 

 2. Case 3. Five months later. Shows the disappearance of the con- 

 tracture. A few of the bone lesions can be distinguished. 



Plate IV 



Fig. 1. Case 8. Mother yaw, before treatment. 



2. Case 8. Mother yaw, after treatment by the Castellani mixture. 



3. Case 8. Yaws, secondary eruption, before treatment. 



4. Case 8. Yaws, secondary eruption, after treatment by the Castellani 



mixture. This patient also had bone lesions that developed in less 

 than six months after the mother yaw (see Plates V and VI). 



Plate V 



Fig. 1. Case 8. Multiple lesions in the bones that showed no change after 

 six weeks of treatment by the Castellani mixture. 

 2. Case 8. This case showed definite change within one month after the 

 administration of 0.4 gram of salvarsan intravenously. Three 

 months later regeneration of the bone was practically complete. 



Plate VI 



Fig. 1. Case 8. Typical bone lesions of yaws. 



2. Case 8. Regeneration of the bone at the sites of the lesions. 



Plate VII 



Fig. 1. Case 1. Shows bone and joint lesions before treatment. 



2. Case 1. Shows lesions five months after treatment by the Castellani 



mixture. Note lack of regeneration of bone and deformity. 



3. Case to show the chronic bone lesions of yaws with deformity. 



Case of Drs. R. Fernandez and Argiielles. 



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