Fig. 18. Rupture of the A2 pulley of the third finger.
A, B. The proton density-weighted fat-suppressed sagittal (A) and axial (B) images in a 36-year-old male with spontaneous pain in the left third finger show increased signal intensity and discontinuity of the A2 pulley of the third finger at the proximal phalanx level (arrows) without a significant gap between the middle phalangeal bone and flexor tendon.