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Case Reports in Orthopedics
Volume 2015 (2015), Article ID 890721, 4 pages
Case Report

Rotator Interval Lesion and Damaged Subscapularis Tendon Repair in a High School Baseball Player

Department of Orthopaedic Surgery, Nobuhara Hospital and Institute of Biomechanics, 720 Haze, Issai-cho, Tatsuno-shi, Hyogo-ken 679-4017, Japan

Received 16 July 2015; Accepted 25 October 2015

Academic Editor: Wolfram Steens

Copyright © 2015 Tomoyuki Muto et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In 2013, a 16-year-old baseball pitcher visited Nobuhara Hospital complaining of shoulder pain and limited range of motion in his throwing shoulder. High signal intensity in the rotator interval (RI) area (ball sign), injured subscapularis tendon, and damage to both the superior and middle glenohumeral ligaments were identified using magnetic resonance imaging (MRI). Repair of the RI lesion and partially damaged subscapularis tendon was performed in this pitcher. During surgery, an opened RI and dropping of the subscapularis tendon were observed. The RI was closed in a 90° externally rotated and abducted position. To reconfirm the exact repaired state of the patient, arthroscopic examination was performed from behind. However, suture points were not visible in the >30° externally rotated position, which indicates that the RI could not be correctly repaired with the arthroscopic procedure. One year after surgery, the patient obtained full function of the shoulder and returned to play at a national convention. Surgical repair of the RI lesion should be performed in exactly the correct position of the upper extremity.