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Citation: News of Beam Diagnostics Belarus 1999 3: 24-26.

MRI presentations of shoulder joint in cases of rotator calf pathology.

Divakov M. G.¹, Askerko E. A.¹, Goncharov V. V.², Marchuk V. P.²

¹Vitebsk Medical Institute, ²Vitebsk Diagnostic Center, Vitebsk.

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Figure 1. Oblique coronal MR image (T2w, 96/3091) shows supra-spinatous muscle lack (arrow). Sub-acromial space narrowed up to 0,42 sm. with humeral joint decentration. Decentration means not-coincidence of rotation centres of concave and convex humeral joint components.

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Figure 2. Oblique coronal MR image of the right humeral joint (PD, 16/3246) shows supra-spinatous muscle defect (arrow). Coronal coefficient (CC) is 0,71. CC calculated by maximal supra-spinatous muscle belly width division on its tendinous part length. Normal CC value was 1,0 +/- 0, 1 in our previous study. 1 - supra-spinatous muscle, 2 - deltoid muscle, 3 - humeral joint caput, 4 - scapular acromial outgrowth, 5 - scapular joint socket.

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Figure 3. Oblique coronal MR image of the left humeral joint (T2w, 96/3000) shows supra-spinatous muscle tendon injury (arrow). Marks - see Figure 2.

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Figure 4. Oblique coronal MR image of the left humeral joint (PD, 16/3000) shows supra-spinatous muscle tendon injury with supra-spinatous muscle superior margin goffering (arrow). Marks - see Figure 2.

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Figure 5. Oblique coronal MR image of the right humeral joint (T2w, 96/4018) shows humeral rotator cuff injury with large protuberance fragment and humeral bone defect of 0,87 sm. depth.

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