MR imaging of ulnar impaction

Eva M Escobedo, A. Gabrielle Bergman, John C Hunter

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


The ulnar impaction syndrome of the wrist is a well-recognized clinical entity, usually showing distinct radiographic features including a positive ulnar variance and degenerative subchondral changes of the distal ulna, proximal lunate, and proximal triquetrum. Confirmation of the clinical and plain film findings with advanced imaging is often necessary to exclude other entities with a similar clinical presentation. Although arthrography and bone scintigraphy are helpful in this work-up, magnetic resonance imaging (MRI) appears to be both a sensitive and a specific means of evaluation. The imaging studies in four patients with clinically and surgically diagnosed ulnar impaction are described, with emphasis on MRI findings. MRI appears to be the modality of choice in the evaluation of patients with suspected ulnolunate impingement.

Original languageEnglish (US)
Pages (from-to)85-90
Number of pages6
JournalSkeletal Radiology
Issue number2
StatePublished - Feb 1995
Externally publishedYes


  • Positive ulnar variance
  • Triangular fibrocartilage
  • Ulnar impaction
  • Wrist MR
  • Wrist pain

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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