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Os paratrapezium

Last revised by Dr Hamish Smith on 03 Oct 2018

Os paratrapezium is an accessory ossicle located between distal and radial aspect of the radius and the base of the 1st metacarpal 1

Differential diagnoses include loose bodies secondary to trapreziometacarpal joint osteoarthritis or secondary to trauma (e.g. Bennett's fracture) 2

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Cases and figures

  • Case 1 - annotated image
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  • Case 2
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