Here, a case of a 59-year-old man with rotator cuff tear and impingement syndrome caused by an ossified coracoacromial ligament is presented. Ossification of the coracoacromial ligaments can occur because of degenerative changes due to trauma or repeated stress, which can lead to impingement syndrome. Therefore, when coracoacromial ligament ossification is present, rotator cuff damage due to impingement syndrome should be considered. Here, we conducted arthroscopic subacromial decompression, removal of the ossified coracoacromial ligament, and supraspinatus and subscapularis tendon repairs. We achieved satisfactory surgical outcomes without relapse; therefore, we report this case with a literature review. The coracoacromial ligament (CAL) forms the coracoacromial arch, which together with the acromion and coronoid processes act as resistance structures against superior translation of the humeral head. The CAL fibers, which are spread out underneath the acromion, are very rigid and inelastic. These fibers are known to cause subacromial impingement syndrome (SAIS).
1)In rare cases, calcification and ossification occur in the CAL, which may be caused by chronic degenerative changes to the CAL because of trauma, repeated stress or abnormal calcium and phosphorus metabolism.2,3) These serve as diagnostic clues to shoulder impingement syndrome and/or rotator cuff damage.
1)We experienced a case of a 59-year-old man with rotator cuff tear and impingement syndrome caused by an ossified CAL. We conducted arthroscopic subacromial decompression, removal of the ossified CAL, and supraspinatus and subscapularis tendon repairs. We achieved satisfactory surgical outcomes without relapse; therefore, we report this case with a literature review.
Case ReportA 59-year-old male patient was admitted with chief complaints of sharp pain and night pain in the right shoulder, which he experienced after playing golf a week earlier. Although the patient did not have any specific medical history, he often played golf, which required frequent use of his shoulders. The patient had complained of intermittent right shoulder pain that started 6 months earlier and had not improved, despite conservative treatment at a private hospital.Upon physical examination, sharp pressure in the anterior CAL of the right shoulder was palpable, while the range of motion (ROM) in the shoulder was reduced to a forward flexion of 120° and abduction of 90°. The patient tested positive on the painful arc, empty can, and Neer and Hawkins impingement tests, which are typical signs of impingement syndrome (Constant score, 42 points). The preoperative blood tests revealed no specific findings.On the plain radiograph, a pillar-shaped ossification of the CAL was observed between the coronoid process and acromion