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Effect of Chondrocalcinosis on the MR Imaging of Knee Menisci

Shaifali Kaushik1,2, Joel K. Erickson3, William E. Palmer3, Carl S. Winalski1, S. James Kilpatrick4 and Barbara N. Weissman1

1 Department of Radiology, Brigham and Women's Hospital, 75 Francis St., Boston, MA 02115.
2 Present address: Department of Radiology, Medical College of Virginia Hospital, 401 N. 12th St., Rm. 3-407B, P. O. Box 980615, Richmond, VA 23298-0615.
3 Department of Radiology, Massachusetts General Hospital, 15 Parkman St., WACC 515, Boston, MA 02114.
4 Department of Biostatistics, Medical College of Virginia, P. O. Box 980032, Richmond, VA 23298.



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  		Fig. 1A. —48-year-old man who presented with knee pain. Anteroposterior knee radiograph shows heavy meniscal calcifications in lateral meniscus (arrow).

 


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  		Fig. 1B. —48-year-old man who presented with knee pain. Sagittal T1-weighted spin-echo MR image (TR/TE, 500/20) shows high signal intensity in lateral meniscus with extension to superior articular surface (anterior horn) and inferior articular surface (posterior horn), interpreted as meniscal tear (arrows). No meniscal tear was found on arthroscopy.

 


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  		Fig. 1C. —48-year-old man who presented with knee pain. Coronal T1-weighted spin-echo MR image (550/20) shows central high-signal-intensity region in lateral meniscus (arrow) extending to inferior articular surface, suggestive of meniscal tear.

 


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  		Fig. 1D. —48-year-old man who presented with knee pain. Sagittal intermediate-weighted MR image (2166/20) shows abnormal meniscal signal (arrow) identical to that seen in C.

 


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  		Fig. 2A. —64-year-old man who was evaluated for knee pain. Anteroposterior knee radiograph shows significant lateral meniscal calcifications (arrow). Moderate medial compartment osteoarthritis is also seen.

 


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  		Fig. 2B. —64-year-old man who was evaluated for knee pain. Coronal T1-weighted MR image (TR/TE, 550/20) shows high signal intensity in lateral meniscus (arrow).

 


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  		Fig. 2C. —64-year-old man who was evaluated for knee pain. Sagittal intermediate-weighted MR image (2300/20) shows high-signal-intensity region in lateral meniscus body extending to inferior articular surface (arrow).

 


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  		Fig. 2D. —64-year-old man who was evaluated for knee pain. Sagittal intermediate-weighted MR image (2300/20) shows high signal intensity in lateral meniscus posterior horn extending to superior articular surface (arrow).

 


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  		Fig. 2E. —64-year-old man who was evaluated for knee pain. Sagittal T2-weighted MR image (2300/80) shows hyperintense signal in lateral meniscus posterior horn (arrow) corresponding to abnormalities in A-D.

 


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  		Fig. 2F. —64-year-old man who was evaluated for knee pain. Coronal inversion recovery MR image (4250/19; inversion time, 180 msec) shows high-signal-intensity area in lateral meniscus (arrow).

 


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  		Fig. 1E. —48-year-old man who presented with knee pain. Coronal inversion recovery MR image (4250/19; inversion time, 180 msec) shows central high-signal-intensity area in lateral meniscus (arrow), corresponding to high signal in figures B and C, and chondrocalcinosis in A.

 

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