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Sonography of the Scapholunate Ligament in Four Cadaveric Wrists: Correlation with MR Arthrography and Anatomy

Jon A. Jacobson1, Eugene Oh1,2, Tim Propeck1,3, Peter J. L. Jebson4, David A. Jamadar1 and Curtis W. Hayes1

1 Department of Radiology, University of Michigan Medical Center, 1500 E. Medical Center Dr., Ann Arbor, MI 48109-0326.
2 Present address: Valley Radiologists, 5322 W. Northern Ave., Glendale, AZ 85301.
3 Present address: Department of Radiology, University of Missouri School of Medicine, One Hospital Dr., Columbia, MO 65212.
4 Department of Orthopaedic Surgery, University of Michigan Medical Center, Ann Arbor, MI 48109-0326.



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  		Fig. 1A. —Cadaveric wrists of 54-year-old man with normal scapholunate ligament of right wrist (A-C) and abnormal scapholunate ligament of left wrist (D-F). S = scaphoid bone, L = lunate bone. Axial sonogram of dorsal right wrist shows normal dorsal aspect of scapholunate ligament (arrows), which appears hyperechoic and fibrillar between scaphoid (S) and lunate (L) bones.

 


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  		Fig. 1B. —Cadaveric wrists of 54-year-old man with normal scapholunate ligament of right wrist (A-C) and abnormal scapholunate ligament of left wrist (D-F). S = scaphoid bone, L = lunate bone. Axial T1-weighted spin-echo MR image (TR/TE, 700/14) with fat saturation obtained after intraarticular gadolinium administration shows intact dorsal aspect of scapholunate ligament (arrow).

 


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  		Fig. 1C. —Cadaveric wrists of 54-year-old man with normal scapholunate ligament of right wrist (A-C) and abnormal scapholunate ligament of left wrist (D-F). S = scaphoid bone, L = lunate bone. Photograph of transverse anatomic section shows intact dorsal aspect of scapholunate ligament (arrow).

 


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  		Fig. 1D. —Cadaveric wrists of 54-year-old man with normal scapholunate ligament of right wrist (A-C) and abnormal scapholunate ligament of left wrist (D-F). S = scaphoid bone, L = lunate bone. Axial sonogram of dorsal left wrist shows abnormal hypoechogenicity (long arrow) in expected location of dorsal aspect of scapholunate ligament. Note intact dorsal radiotriquetral ligament (short arrows).

 


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  		Fig. 1E. —Cadaveric wrists of 54-year-old man with normal scapholunate ligament of right wrist (A-C) and abnormal scapholunate ligament of left wrist (D-F). S = scaphoid bone, L = lunate bone. Axial T1-weighted spin-echo MR image (700/14) with fat saturation obtained after intraarticular gadolinium administration shows abnormal discontinuity (arrow) of dorsal aspect of scapholunate ligament. Note intact dorsal radiotriquetral ligament (arrowhead).

 


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  		Fig. 1F. —Cadaveric wrists of 54-year-old man with normal scapholunate ligament of right wrist (A-C) and abnormal scapholunate ligament of left wrist (D-F). S = scaphoid bone, L = lunate bone. Photograph of transverse anatomic section shows abnormal discontinuity (arrow) of dorsal aspect of scapholunate ligament. Note intact dorsal radiotriquetral ligament (arrowhead).

 


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  		Fig. 2A. —Cadaveric wrist of 91-year-old man with abnormal scapholunate ligament. S = scaphoid bone, L = lunate bone. Axial sonogram of dorsal wrist shows abnormal hypoechogenicity (arrow) in expected location of dorsal aspect of scapholunate ligament.

 


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  		Fig. 2B. —Cadaveric wrist of 91-year-old man with abnormal scapholunate ligament. S = scaphoid bone, L = lunate bone. Axial T1-weighted spin-echo MR image (TR/TE, 700/14) with fat saturation obtained after intraarticular gadolinium administration shows abnormal discontinuity (arrow) of dorsal aspect of scapholunate ligament.

 


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  		Fig. 2C. —Cadaveric wrist of 91-year-old man with abnormal scapholunate ligament. S = scaphoid bone, L = lunate bone. Photograph of transverse anatomic section shows abnormal discontinuity (arrow) of dorsal aspect of scapholunate ligament.

 

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