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- Discussion:
    - may result from over advancement of the FDP following tendon rupture or repair, from from proximal FDP adhesions, or may result from 
          arthrodesis of PIP joint of ring and long fingers;
    - the result is weak grasp in remaining fingers due to FDP tethering by scar at amputation site (eg suturing FDP to extensors);
          - if one FDP is tethered, the others can not shorten;
          - there is loss of flexion in other digits and patient may be unable to make a full fist

Profundus tendon blockage: quadriga in finger amputations.

Syndrome of quadrigia.
    Verdan, C. Surgical Clinics of North America. Vol 40. 1960. p 425-426