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Intramuscular calcification of the subscapularis muscle: a case report
Arthrosc Orthop Sports Med 2015;2:55-59
Published online January 1, 2015;  https://doi.org/10.14517/aosm14007
© 2015 Arthroscopy and Orthopedic Sports Medicine.

Tae Hyun Wang, Jung Hoei Ku, Hyung Lae Cho, Hong Ki Jin

Department of Orthopaedic Surgery, Good Samsun Hospital, Busan, Korea
Correspondence to: Hyung Lae Cho, Department of Orthopaedic Surgery, Good Samsun Hospital, 326 Gaya-daero, Sasang-gu,
Arthroscopy and Busan 617-718, Korea. Tel: +82-51-310-9289, Fax: +82-51-310-9348, E-mail: hljo88@hanmail.net
Received April 28, 2014; Revised June 17, 2014; Accepted June 19, 2014.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Calcific tendinitis of the shoulder has been widely described in the literature. It occurs most commonly near the insertion site of the rotator cuff tendons, particularly involving the supraspinatus tendon. We report a case of a 59-year-old female patient with an atypically located calcification in the muscular portion of the subscapularis. The patient complained of severe shoulder pain and limited range of motion that were complicated with a tingling sensation of the affected upper arm and hand. Magnetic resonance imaging results confirmed that the calcific material was located near the musculotendinous junction and edema of the soft tissue extended to the adjacent brachial plexus, which would also be suggestive of an infection or a tumor. After ultrasound-guided needling of the calcific deposit and corticosteroid injection therapy, the patient showed significant pain relief and improved range of motion. Calcific tendinitis can occur within the involved muscle and its clinical symptoms vary according to the type of lesion.
Keywords : Shoulder; Subscapularis; Calcific tendinitis; Intramuscular loculation; Ultrasound-guided needling
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