Painful Osteochondroma of the Hallucal Sesamoid: A Case Report

Dae Geun Kim; Gil Yeong Ahn; Il Hyun Nam; Yeong Hyeon Lee; Tae Hun Lee; Yong Sik Lee; Dong Hyun Lee

doi:10.14193/jkfas.2016.20.3.140

Journal List > J Korean Foot Ankle Soc > v.20(3) > 1043392

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Kim, Ahn, Nam, Lee, Lee, Lee, and Lee: Painful Osteochondroma of the Hallucal Sesamoid: A Case Report

Case Report

J Korean Ophthalmol Soc 2016;20(3):140-144.

Published online: 19 January 2016

DOI: https://doi.org/10.14193/jkfas.2016.20.3.140

Painful Osteochondroma of the Hallucal Sesamoid: A Case Report

Dae Geun Kim, Gil Yeong Ahn, Il Hyun Nam, Yeong Hyeon Lee, Tae Hun Lee, Yong Sik Lee, Dong Hyun Lee

Department of Orthopedic Surgery, Pohang St. Mary’s Hospital, Pohang, Korea

Corresponding Author: Gil Yeong Ahn Department of Orthopedic Surgery, Pohang St. Mary’s Hospital, 17 Daejamdong-gil, Nam-gu, Pohang 37661, Korea Tel: 82-54-260-8139, Fax: 82-54-277-2072, E-mail: kkirraa@daum.net

Received 18 May 201628 June 2016 Accepted 14 July 2016

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Osteochondroma is one of the most common bone tumors. It can occur anywhere, although it is most frequent mainly around the metaphysis of long bones. Prediction sites are distal femur, proximal humerus, proximal tibia, and so on. However, osteochondroma in sesamoid is very rare. Herein, we report a case of a 56-year-old woman with symptomatic extra-articular osteochondroma in hallucal sesamoid with a brief literature review.

Keywords: Hallux, Sesamoid, Osteochondroma

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Figure 1.

(A, B) Clinical photographs of preoperative foot status show that a corn on the first metatarsal head area was occurred due to bony protrusion.

Figure 2.

(A, B) Preoperative radiographs of both feet show a bony mass of tibial sesamoid on big toe of the left foot in the anteroposterior and tangential views (arrows).

Figure 3.

Axial image (A) and sagittal image (B) of the left foot computed tomographs demonstrate 10×11×8 mm³ sized bony mass with irregular margin from the tibial sesamoid (arrows).

Figure 4.

On the magnetic resonance images, axial view (A) and sagittal view (C) of T1-weighted image show low signal intensity of bony mass (arrows). Axial view (B) and sagittal view (D) of T2-weighted image also show low signal intensity of bony mass (arrows).

Figure 5.

We exposured the osteochondroma (A) and excised mass (B).

Figure 6.

After excision of bony mass, there is no more bony protrusion of the medial sesamoid (arrow).

Figure 7.

In the microscopic findings of the osteochondroma (H&E stain; A: ×40, B: ×100), the mature bone is covered with cartilaginous cap and thick fibrous capsule. Also these slides show well developed mature hyaline cartilage and it change into mature trabecular bone.

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