The purpose of this study was to observe postoperative changes of MRI findings on a fascia lata patch graft for rotator cuff tear. Fascia lata patch graft for rotator cuff tear was performed on 16 patients. Their average age was 64 years old. Postoperative oblique coronal T2 weighted MRI findings on the graft was observed at 6 months and 1 year after the operation. We divided the graft into 3 sections: lateral part of the humeral head, top of the humeral head, and medial part of the humeral head, and investigated the intensity of the graft in each section. Intensity of the graft in each section at 6 months after the operation was the following: lateral part (low; 4, iso; 12, high; 0), top of the humeral head (low; 12, iso; 3, high; 1), medial part (low; 3, iso; 12, high; 1). The intensity at 1 year was the following: lateral part (low; 3, iso; 12, high; 1), top of the humeral head (low; 10, iso; 5, high; 1), medial part (low; 6, iso; 9, high; 1). In our study, at 6 months, patients with iso intensity of the graft in medial and lateral parts of the humeral head tended to be larger, and that those with low intensity of the graft in the top of the humeral head tended to be larger. These suggested that iso intensity of the graft may be the junction of the graft with greater tubercle and proximal end of rotator cuff tear. In our study, most patients with iso intensity of the junction at 6 months had the same intensity at 1 year.
