鏡視下腱板修復術の短期成績と MRI 評価
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<B>Background:</B> The change of repaired rotator cuff after operation is unknown. The purposes of this study are to evaluate the clinical results of arthroscopic rotator cuff repairs and to investigate post operative changes of MRI findings.<BR><B>Methods:</B> 52 shoulders of 50 patients were treated with arthroscopic rotator cuff repair (male 41 shoulders, female 11 shoulders, mean age 64.4) and their postoperative conditions followed-up for more than 1 year (the mean period of follow up is 19.8 months). The size of tear was partial in 1 shoulder, small in 3, medium in 15, large 1n 30, massive in 3. We investigated JOA scores and presence of re-tear of repaired rotator cuff. And we evaluated changes of supraspinatus muscle (SSP) area of 19 shoulders by MRI.<BR><B>Results:</B> 10 cuffs were retorn. Respect to size of tear, the average postoperative JOA score of partial and small tears increased from 65.7 points to 90.0 points, from 59.4 points to 94.3 points in medium tears, from 56.9 points to 90.0 points in large and massive tears. Respect to presence of recurrent tear, large and massive tears ware divided into two groups, recurrent tear group and repaired group. There was not significant difference between two groups in average postoperative JOA score. The occupation ratio of SSP to suprasupinous fossa was measured. The change of occupation ratio ware within about 10% except 1 shoulder. The occupation rate of this 1 case increased more than 20%.<BR><B>Conclusion:</B> The possibility of recovery in repaired cuffs was suggested.
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