826 



PETER BASSOE 



The Sternum and Clavicles. The angle between the body and manu- 

 brium of the sternum is about 165 degrees (see lateral view of skeleton). 

 The xiphoid appendix is bifid and both prongs are completely ossified and 

 united with the body. There are exostoses at the points of ligamentous in- 

 sertion in the outer third of both clavicles. Otherwise these bones are 

 normal. 



Scapulae. The scapulae are of about normal proportions but show 

 marked thinning of the bodies and rami, with equally marked lipping of 

 the borders of the bodies and spines, the margins of which are very uneven. 



13. Rontgenogram of feet. (Case of Dean Lewis.) 



The articular surfaces of the glenoid cavities are very uneven, and there is 

 marked lipping of the articular margins and hyperostosis of the margin of 

 the head and neck of the scapula on both sides. The coracoid processes 

 show hyperostosis at the points of ligamentous insertion, but marked thin- 

 ning of the body of the processes from absorption, especially on the outer 

 side, with production of marked grooving on the lateral surfaces. The 

 acromion processes and spines show similar changes, with thinning of the 

 corpus and hyperostosis at the points of ligamentous insertion. 



The Extremities. The joints of the extremities everywhere show defi- 

 nite evidence of arthritis deformans with erosion and destruction of artic- 

 ular cartilages, lipping o f articular margins, and hyperostosis at the points 

 of capsular and ligamentoiis insertion. (Fig. 13.) All of these changes 

 are especially marked at the articular margins of the shoulders, hips, 



