From the case:
First intermetatarsal angle
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1st intermetatarsal angle.
Case Discussion
The 1st intermetatarsal angle or just intermetatarsal angle (IMA) is the angle formed by the intersection of longitudinal axes of the diaphyses of the 1st and 2nd metatarsals.
It is a useful radiographic measurement in the assessment of hallux valgus.
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