T2 mapping による腱板断裂患者の肩関節軟骨評価
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概要
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<B>Background:</B> We can see an obvious X-ray change in shoulder joints with cuff-tear arthropathy, which results in severe joint damage with rotator cuff tear (RCT). It is difficult, however, to evaluate the nature of articular cartilage without progressive damage. Recently T2 mapping has been reported as a technique to examine cartilage quantitatively. The purpose of this study is to evaluate cartilage degeneration in the shoulder joint and the relationship of RCT.<BR><B>Methods:</B> Forty two patients (25 males and 17 females, mean age of 63.6 years old) were evaluated. We analyzed routine MRI protocol and T2 mapping using the oblique coronal planes. T2 values of cartilage were examined at the region of interest established as superior (g1) and inferior (g2) site of glenoid and as superior (h1), middle (h2), and inferior (h3) site of humeral head. The medial displacement index (MI) and upward migration index (UI) were obtained using plain X-ray of the shoulder joint.<BR><B>Results:</B> The T2 value at h3 was 47.5ms in MI higher group and 63.1ms in MI lower group, which was statistically significant. Thirty three shoulders had RCT, which included 8 shoulders with large and massive tears. The T2 value at h3 was significantly higher in the large and massive tear group than another group.<BR><B>Discussion:</B> Kerr et al reported that they could detect bony spur and cyst formation at the lower part of humeral head in OA patients, which could be supported by our results.
- 日本肩関節学会の論文
日本肩関節学会 | 論文
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