Terry Thomas (David Letterman) sign: scapholunate ligament disruption with interspace widening = mimics wide gap between front teeth
Definitions
Intrinsic ligaments: connecting 1 carpal bone to another
Extrinsic ligaments: capsular thickenings connecting carpals to metacarpals, radius, or ulna
Intercarpal ligament disruption
Relates to scapholunate ligament (SLL) and lunotriquetral ligament (LTL)
IMAGING
General Features
Radiographic Findings
Fluoroscopic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Imaging Recommendations
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Leake RL et al: MRI of the wrist ligaments. Top Magn Reson Imaging. 29(5):209-20, 2020
Lee RK et al: Intrinsic ligament and triangular fibrocartilage complex tears of the wrist: comparison of MDCT arthrography, conventional 3-T MRI, and MR arthrography. Skeletal Radiol. 42(9):1277-85, 2013
Taljanovic MS et al: US of the intrinsic and extrinsic wrist ligaments and triangular fibrocartilage complex--normal anatomy and imaging technique. Radiographics. 31(1):e44, 2011
De Filippo M et al: MDCT arthrography of the wrist: diagnostic accuracy and indications. Eur J Radiol. 74(1):221-5, 2010
Watanabe A et al: Ulnar-sided wrist pain. II. Clinical imaging and treatment. Skeletal Radiol. 39(9):837-57, 2010
Gheno R et al: Differences between radial and ulnar deviation of the wrist in the study of the intrinsic intercarpal ligaments: magnetic resonance imaging and gross anatomic inspection in cadavers. Skeletal Radiol. Epub ahead of print, 2009
Lisle DA et al: MR imaging of traumatic and overuse injuries of the wrist and hand in athletes. Magn Reson Imaging Clin N Am. 17(4):639-54, vi, 2009
Moser T et al: Multidetector CT arthrography of the wrist joint: how to do it. Radiographics. 28(3):787-800; quiz 911, 2008
Rettig AC: Athletic injuries of the wrist and hand: part II: overuse injuries of the wrist and traumatic injuries to the hand. Am J Sports Med. 32(1):262-73, 2004
Haims AH et al: Internal derangement of the wrist: indirect MR arthrography versus unenhanced MR imaging. Radiology. 227(3):701-7, 2003
Linkous MD et al: Scapholunate ligamentous communicating defects in symptomatic and asymptomatic wrists: characteristics. Radiology. 216(3):846-50, 2000
Related Anatomy
Loading...
Related Differential Diagnoses
Loading...
References
Tables
Tables
KEY FACTS
Terminology
Imaging
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Synonyms
Terry Thomas (David Letterman) sign: scapholunate ligament disruption with interspace widening = mimics wide gap between front teeth
Definitions
Intrinsic ligaments: connecting 1 carpal bone to another
Extrinsic ligaments: capsular thickenings connecting carpals to metacarpals, radius, or ulna
Intercarpal ligament disruption
Relates to scapholunate ligament (SLL) and lunotriquetral ligament (LTL)
IMAGING
General Features
Radiographic Findings
Fluoroscopic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Imaging Recommendations
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Leake RL et al: MRI of the wrist ligaments. Top Magn Reson Imaging. 29(5):209-20, 2020
Lee RK et al: Intrinsic ligament and triangular fibrocartilage complex tears of the wrist: comparison of MDCT arthrography, conventional 3-T MRI, and MR arthrography. Skeletal Radiol. 42(9):1277-85, 2013
Taljanovic MS et al: US of the intrinsic and extrinsic wrist ligaments and triangular fibrocartilage complex--normal anatomy and imaging technique. Radiographics. 31(1):e44, 2011
De Filippo M et al: MDCT arthrography of the wrist: diagnostic accuracy and indications. Eur J Radiol. 74(1):221-5, 2010
Watanabe A et al: Ulnar-sided wrist pain. II. Clinical imaging and treatment. Skeletal Radiol. 39(9):837-57, 2010
Gheno R et al: Differences between radial and ulnar deviation of the wrist in the study of the intrinsic intercarpal ligaments: magnetic resonance imaging and gross anatomic inspection in cadavers. Skeletal Radiol. Epub ahead of print, 2009
Lisle DA et al: MR imaging of traumatic and overuse injuries of the wrist and hand in athletes. Magn Reson Imaging Clin N Am. 17(4):639-54, vi, 2009
Moser T et al: Multidetector CT arthrography of the wrist joint: how to do it. Radiographics. 28(3):787-800; quiz 911, 2008
Rettig AC: Athletic injuries of the wrist and hand: part II: overuse injuries of the wrist and traumatic injuries to the hand. Am J Sports Med. 32(1):262-73, 2004
Haims AH et al: Internal derangement of the wrist: indirect MR arthrography versus unenhanced MR imaging. Radiology. 227(3):701-7, 2003
Linkous MD et al: Scapholunate ligamentous communicating defects in symptomatic and asymptomatic wrists: characteristics. Radiology. 216(3):846-50, 2000
STATdx includes over 200,000 searchable images, including x-ray, CT, MR, and ultrasound images. To access all images, please log in or subscribe.