y8 THE SUPERIOR EXTREMITY 



Owing to trauma or disease, growth may cease prematurely 

 in one bone, but not in the other. As the healthy bone increases 



FIG. 28. Carpus of an Adolescent, aged sixteen. The centres of ossification 

 for all the carpal bones are present, but those for the os multangulum minus 

 and the pisiform are obscured by the os multangulum majus and the os 

 triquetrum, respectively. Observe the epiphysis of the first metacarpal bone. 



in length, the hand gradually becomes deviated to the affected 

 side. 



Carpal Joints. With the exception of the carpo-metacarpal 



