Indian Journal of Nuclear Medicine
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Year : 2017  |  Volume : 32  |  Issue : 4  |  Page : 326-329

Bone scan in detection of biological activity in nonhypertrophic fracture nonunion

1 Department of Nuclear Medicine and PET CT, Infocus Diagnostics, Ahmedabad, Gujarat, India
2 Department of Radio-diagnosis, Infocus Diagnostics, Ahmedabad, Gujarat, India

Correspondence Address:
Sunny J Gandhi
Infocus Diagnostics, 45-B, Swastik Society, Opposite Vipul Dudhiya, Navrangpura, Ahmedabad, Gujarat
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijnm.IJNM_50_17

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Biological activity of the fracture site is very important factor in treatment planning of fracture nonunion. If no biological activity is detected, then an autologous bone graft can be supplemented or osteogenic supplementations, such as bone morphogenetic protein is given. If biological activity is present, then secure fixation is sufficient to achieve bony union. Biological activity of nonunions is usually assessed by conventional radiographs. The presence of callus formation is usually assessed as the presence of biological activity. However, high number of radiologically nonhypertrophic nonunion demonstrates intense, uniform tracer uptake on bone scan, a sign of biological activity. Poor or absent callus visualization on radiographs does not always mean a lack of biological activity and it underestimates it. Uptake in bone scintigraphy reflects blood flow and new bone formation and being functional imaging technique, it is more suitable for assessing biological activity.

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