Page 61 - Imaging of Osteoarthritis and Rheumatoid Arthritis in Hand Joints
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 From our results, we do not know how many patients were false-positives or false-negatives on CT. In future studies, it may therefore be valuable to compare the two imaging modalities with a true reference standard, e.g., arthroscopy. While it is not a standard procedure, both the CMC1 and the STT joints are assessable by surgeons skilled in arthroscopy,20-23 although the joint space between trapezium and trapezoid might be difficult to assess with arthroscopy.
In conclusion, CT had a higher inter-reader reliability and detection rate for
both CMC1 and STT OA than radiography. As surgical treatment selection of 3 thumb base OA depends on the presence of pathology in the CMC1 and STT
joints, CT may improve treatment selection and surgical planning.
We would like to thank Ali Hosseini for his help with the data collection.
CT for detection of thumb base OA

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