Delamination 腱板断裂における鏡視下 double row 腱板修復後の MRI 評価

概要

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Delamination was one of the horizontal tears combined with articular side tears and bursal side tears observed in full-thickness rotator cuff tears. Double row rotator cuff repair was a current surgical technique for rotator cuff tears with delamination. The aim of this study was to evaluate the usefulness of double row repair technique for delamination by MRI. We retrospectively evaluated 18 patients in which we performed arthroscopic double row repair for delamination. Postoperative MRI was performed at 8.6 months on average. MRI findings were classified according to the modified Sugayas classification (Type1, sufficient thickness with homogenously low intensity; type2, sufficient thickness with partial high intensity; type3a, articular side re-tear; type3b, bursal side re-tear; type4, presence of a minor discontinuity; type5, presence of a major discontinuity). Postoperative MRIs revealed 6 type1 (33.3%), 3 type2 (16.7%), 6 type3a (33.3%), 0 type3b (0%), 0 type4 (0%) and 3 type5 (16.7%). All type3 cases were articular side re-tears (type3a). Articular side re-tear was seen in 9 cases (50%) and bursal side re-tear was seen in 3 cases (16.7%). Significant differences between articular side re-tear and bursal side re-tear were observed.Bursal side tear was well repaired, though articular side re-tear was seen in 50% after a double row repair for delamination.
日本肩関節学会の論文