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Articular Cartilage Lesions of the Glenohumeral Joint: Diagnostic Effectiveness of MR Arthrography and Prevalence in Patients with Subacromial Impingement Syndrome¹

¹ From the Departments of Radiology (D.V.G., C.W.A.P., M.R.S., M.Z., C.A.B., J.H.) and Orthopedic Surgery (A.G.S.), Orthopedic University Hospital Balgrist, Forchstrasse 340, 8008 Zurich, Switzerland. From the 2001 RSNA scientific assembly. Received December 26, 2001; revision requested February 27, 2002; revision received March 29; accepted May 13. Address correspondence to C.W.A.P. (e-mail: christian@pfirrmann.ch).

View larger version (144K): [in a new window]   Figure 1a. (a) Transverse T1-weighted spin-echo 580/20 and (b) coronal T1-weighted fat-saturated spin-echo 800/20 MR arthrographic images of a shoulder with an arthroscopically proven marked humeral cartilage lesion (arrowheads).

View larger version (149K): [in a new window]   Figure 1b. (a) Transverse T1-weighted spin-echo 580/20 and (b) coronal T1-weighted fat-saturated spin-echo 800/20 MR arthrographic images of a shoulder with an arthroscopically proven marked humeral cartilage lesion (arrowheads).

View larger version (137K): [in a new window]   Figure 2a. Transverse T1-weighted spin-echo 580/20 MR arthrographic image of a shoulder with an arthroscopically proven subtle humeral cartilage lesion represented by an irregular surface (arrowheads) of the articular cartilage.

View larger version (142K): [in a new window]   Figure 3b. Transverse T1-weighted spin-echo 580/20 MR arthrographic image of a shoulder with an arthroscopically proven marked cartilage lesion (arrowheads) at the glenoid.

View larger version (164K): [in a new window]   Figure 4a. (a) Transverse T1-weighted spin-echo 580/20 MR arthrographic image of a shoulder with arthroscopically normal glenoidal cartilage. The cartilage-labrum transition zone (arrowheads) was misinterpreted as a cartilage defect. (b) Transverse T1-weighted spin-echo 580/20 MR arthrographic image of a shoulder with arthroscopically proven normal humeral cartilage. The humeral cartilage (arrowheads) is thin, leading to the false impression of osteoarthritis with generalized thinning of the cartilage.

View larger version (154K): [in a new window]   Figure 4b. (a) Transverse T1-weighted spin-echo 580/20 MR arthrographic image of a shoulder with arthroscopically normal glenoidal cartilage. The cartilage-labrum transition zone (arrowheads) was misinterpreted as a cartilage defect. (b) Transverse T1-weighted spin-echo 580/20 MR arthrographic image of a shoulder with arthroscopically proven normal humeral cartilage. The humeral cartilage (arrowheads) is thin, leading to the false impression of osteoarthritis with generalized thinning of the cartilage.