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Cho: Muscle Infarction and Calcification of the Semitendinosus Tendon: A Case Report
Case Report
The Journal of the Korean Bone and Joint Tumor Society

The Journal of the Korean Bone and Joint Tumor Society 2012; 18(2): 89-93.

Published online: 21 December 2012

DOI: https://doi.org/10.5292/jkbjts.2012.18.2.89

Muscle Infarction and Calcification of the Semitendinosus Tendon: A Case Report

Jin-Ho Cho

Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.

Correspondence to: Jin-Ho Cho. Department of Orthopaedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine, 2240, Daehwa-dong, Ilsanseo-gu, Goyang 411-706, Korea. TEL: +82-31-910-9733, FAX: +82-31-910-7967, osd07@paik.ac.kr

Received 27 April 2012       Revised 15 November 2012       Accepted 19 November 2012

Copyright © 2012 by The Korean Bone and Joint Tumor Society

(open-access):

"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

The most common anatomic location of calcific tendinitis is the suprasupinatus muscle of the shoulder joint. However, it is known to develop in any joint including the hip, knee. Infarction of skeletal muscle in the distal areas of the limbs due to vascular occlusion is a well recognized systemic condition in patients who have diabetes. The author experienced mass-like lesion combined muscle infarction and calcification within pure semitendinosus tendon without diabetes in posterosuperior area of distal thigh in old age.

Keywords: distal femur, semitendinosus tendon, muscle infarction, calcification

Figures and Tables

Figure 1
Lateral radiograph of right knee show calcified lesion (arrow) on posterior area of distal femur.
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Figure 2
Magnetic resonance images shows well-defined soft tissue mass along semitendinosus tendon, posterior aspect of distal thigh. (A) T1-weighed image: slightly high signal intensity (B) T2-weighed image: heterogeneous iso signal intensity.
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Figure 3
Gross examination reveals tendon (right white portion) with skeletal muscles (left cut view).
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Figure 4
Microscopic findings of tendinitis with muscle infarct. (A) Low power view reveals tendon (T) and skeletal muscle (M) (×40). (B) Degeneration with infract (arrows) was noted in muscle portion (×200, H&E). (C) Degeneration with calcification (arrows) was noted in tendon portion (×100, H&E). (D) Tendinitis with foreign body reaction (arrows).
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References

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