NO. II 



ANTHROPOLOGICAL WORK IN PERU — HRDLICKA 



69 



Arthritis adult 1 



at sternal joint. 

 Periostitis adult 1 



moderate, under surface, distal end. 

 Combinations of lesions on same bone none 



PHALANGES 



Number of bones examined (adults or adolescents) 213 



Of which : 



Fracture 1 



Arthritis 3 



A brief analysis of the preceding figures shows that among 3,406 long bones 

 only 157, or 4.6 per cent, presented one or at most two pathological conditions ; 

 while among the remaining 4,777 other bones, such bones numbered 231, or 

 slightly less than 4.9 per cent. These are exceedingly small proportions of 

 diseased specimens, far smaller than among the modern whites of any class. 

 The distribution of the lesions was as follows : 



Long Bones 



Fractures 6 or one in 567 bones 



Dislocations 2 



Exostoses 11 



Arthritis 85 (48 at knee joint) 



" Mushroom-head " fe- 

 mur or humerus (ar- 

 thritis deformans).... 17 (16 femora) 



Periostitis 24 (12 in tibia) 



Osteoperiostitis 12 



Miscellaneous 6 



Other Bones 



15 or one in 318 bones 



(14 in ribs). 

 8 (all at hip-joint). 



4 

 176 (92 in vertebrae) . 



25 (acetabulum). 

 2 



