Clinical and radiological outcomes of arthroscopic en bloc repair for delaminated rotator cuff tear versus non-delaminated tear:

Purpose:The objective of the study is to determine clinical and radiological outcomes of arthroscopic repair for delaminated tears versus non-delaminated tears.Methods:Consecutive 138 patients with full-thickness rotator cuff tear were retrospectively enrolled. They were divided into two groups based on the presence of delamination. All delaminated tears were repaired by en bloc technique (suturing both layers by single stitch). Delaminated tears were categorized into two types: (1) posterior type, delamination involving mainly infraspinatus and (2) complete type, delamination involving both supraspinatus and infraspinatus. Clinical assessments were done using pain visual analog scale (PVAS), functional VAS, American Shoulder Elbow Surgeons score, the Constant score, and range of motion. Postoperative MRI was performed at 6 months after surgery to determine repair integrity.Results:Of the 138 patients, 78 (56.5%) had delaminated tears, including 30 cases of posterior type and 48 cases of complete type. Th...