ObjectiveTo evaluate the effectiveness of the combined tenodesis for proximal lesions of biceps tendon with massive rotator cuff tear by arthroscopy. MethodsBetween January 2011 and June 2013, 48 patients with massive rotator cuff tear and proximal lesions of biceps tendon underwent combined tenodesis under arthroscopy, and the clinical data were retrospectively analyzed. Of 48 cases, 22 were male and 26 were female with an average age of 46 years (range, 35-59 years); 12 cases had clear history of trauma. The disease duration ranged from 1 to 57 months (mean, 4.6 months). All cases suffered from moderate to severe shoulder pain, the strength and the range of motion (ROM) declined when compared with those of the other side. According to Goutallier classification standard, 3 cases were rated as grade 0, 18 cases as grade 1, and 27 cases as grade 2. The operation time and complication were recorded. The visual analogue scale (VAS) score, ROM, the strength of flexed elevation and elbow flexion, Constant-Murley score, University of California Los Angeles (UCLA) score, American Shoulder and Elbow Surgeons (ASES) score, Mayo elbow performance score (MEPS) were used to evaluate the effectiveness. ResultsThe operations were performed successfully, and incisions healed primarily. The operation time was 120-160 minutes (mean, 135 minutes). One case had shoulder joint swelling with wound bleeding, which was cured after proper treatment. All 48 patients were followed up 12-18 months (mean, 13.9 months). The results of MRI showed good healing of tendon at 6 months after operation. When compared with preoperative values, VAS score was significantly decreased (P<0.05); the ROM in forward flexion, external rotation, and internal rotation, and the strength of flexed elevation were significantly increased (P<0.05); and ASES score, Constant-Murley score, and UCLA score were significantly improved at 12 months after operation (P<0.05). No significant difference was observed in MEPS score and elbow flexion strength (P>0.05). ConclusionThe technique of combined tenodesis under arthroscopy can obtain satisfactory clinical outcomes in treating proximal lesions of biceps tendon with massive rotator cuff tear.