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CT guided diagnostic foot injections
A Saifuddin1, M Abdus-Samee, C Mann
1Department of Diagnostic Imaging, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex, UK. asaifuddin@aol.com
Aim:
To describe a CT technique for guiding diagnostic and therapeutic injections in the hind- and mid-foot.
Materials And Methods:
Over a period of 50 months, 28 individuals were referred for diagnostic and therapeutic hind- and mid-foot injections before possible arthrodesis. A CT technique was developed that allowed entry into the various joints using a vertical approach. Numbers of joints injected were as follows: posterior subtalar, 21; talonavicular, 4; calcaneonavicular, calcaneocuboid, navicular-cuneiform and 5th metatarsocuboid joints, 1 each.
Results:
All injections but one were technically successful. Significant relief of symptoms was noted by 16 participants, whereas for 9 there was no improvement and for 3 a partial response was achieved.
Conclusion:
CT is a simple and safe alternative to fluoroscopy for guiding diagnostic and therapeutic foot injections, and may be the technique of choice in cases of disordered anatomy.
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