Type II volar ridge trapezium fracture
MRI was requested to evaluate chronic basilar joint of thumb pain with reportedly normal radiographs.
I think the non-displaced avulsion at the tip of the volar ridge is clearly demonstrated (I dont have outside radiographs), and BME suggests chronic non-union. Is there any reason to recommend CT (my colleagues are of differing opinions)? Its the insertion of the transverse carpal ligament, which must constantly stress the fracture site. Ive attached a photocopied article reporting 3 cases; both Type II (tip avulsions) went on to non-union despite adequate immobilization, whereas the more proximal, Type I fracture healed. [ Article ]
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