Abstract
The assessment of bone healing through sequential nuclear medical scintigraphy requires a method of consistent localization of the exact fracture area in each consecutive image as the study progresses. This is difficult when there is surrounding bone activity as in the early stages of trauma, and also if complications should set in. The image profile feature, available from most nuclear medical computer software, facilitates this procedure considerably, as is indicated in the present report on bone healing in baboons. Together with roentgenology and histology a 99mTc-MDP study was in this way successfully done on the healing of long bone fractures experimentally induced in non-human primates. Different surgical implants were used. The results indicate that 99mTc-MDP accurately reflects the physiological activity in bone. The time-activity curves obtained are presently being studied together with extensive histology, bearing possible clinical application in mind.
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