The crystallinity of bone mineral

The degree of crystallinity of human femoral cortical bone from 16 to 83 years of age was determined by various X-ray and infra-red methods. It was established that an X-ray integral index method and an infra-red peak comparison method were the most reliable. Both methods indicated that the crystallinity of bone material varies between 51 and 59%, with no significant change with age. A new X-ray line was noted at 2=43° in bone of age greater than 50 years.