72-year-old male with inability to flex thumb

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Evaluate for flexor pollicis rupture at the carpometacarpal joint level. 

 Long- and short-axis fat- and water-weighted images were performed. 

  • Flexor pollicis longus rupture with the retracted end identified just under a centimeter distal to the 1st carpometacarpal junction and lying lateral to the thumb or in the webspace region is noted proximally. 
  • Tendinopathic flexor carpi radialis. 
  • Insufficient attenuated or chronically torn medial oblique or beak ligament. No subluxation is noted. 
  • Paucity of carpometacarpal joint arthrosis. 
  • Scant or paucity of scaphomultangular arthrosis with 2mm kissing erosions.

Ruptured and retracted flexor pollicis longus position detailed in the body of the report.

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