Ulnar collateral ligament avulsion - thumb

Case contributed by Maulik S Patel
Diagnosis certain


Fall on ground. Trauma to thumb. C/o pain at thumb base.

Patient Data

Age: about 55 yrs
Gender: Male

Referred for evaluation of...


Referred for evaluation of ulnar colLat ligament of 1st metacarpo-phalangeal joint.

  • Symptomatic side Ulnar collateral ligament
    • Thickened
    • An avulsed bone flake is seen at its distal attachment site
    • Donor site is proximal phalanx base.
  • Asymptomatic side Ulnar collateral ligament
    • Normal.

Case Discussion

Findings of ulnar collateral ligament avulsion at the thumb base.

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