Osteoid Osteoma of the Capitate with Extensor Tenosynovitis

Sang Wook Bae; Han Sang Lee; Yun Sun Choi; Baek Yong Song

doi:10.12790/jkssh.2013.18.3.138

Journal List > J Korean Soc Surg Hand > v.18(3) > 1106435

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Bae, Lee, Choi, and Song: Osteoid Osteoma of the Capitate with Extensor Tenosynovitis

Case Report

J Korean Soc Surg Hand 2013;18(3):138-142.

Published online: 12 September 2013

DOI: https://doi.org/10.12790/jkssh.2013.18.3.138

Osteoid Osteoma of the Capitate with Extensor Tenosynovitis

Sang Wook Bae¹, Han Sang Lee¹, Yun Sun Choi², Baek Yong Song¹

¹Department of Orthopedic Surgery, Eulji General Hospital, Eulji University College of Medicine, Seoul, Korea

²Department of Radiology, Eulji General Hospital, Eulji University College of Medicine, Seoul, Korea

Correspondence to: Baek Yong Song Department of Orthopaedic Surgery, Eulji General Hospital, Eulji University College of Medicine, 68 Hangeulbiseong-ro, Nowon-gu, Seoul 139-711, Korea TEL: +82-2-970-8260 FAX: +82-2-973-3024 E-mail: sby2409@eulji.ac.kr

Received 6 May 20138 August 2013 Accepted 3 September 2013

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

An osteoid osteoma is a benign bone tumor. It is most commonly found in the femur and tibia but only 5% to 15% occurs in hand. Osteoid osteoma of carpal bone has vague nature of symptoms including spontaneous dull aching causing delayed diagnosis and the late treatment. We had a patient with an osteoid osteoma of the capitate bone presenting with tenosynovitis. We present clinical and radiological findings including magnetic resonance imaging, surgical result, and a review of the current literature.

Keywords: Capitate bone, Bone neoplasm, Osteoid osteoma, Tenosynovitis

REFERENCES

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Fig. 1.

A photograph shows mild soft tissue swelling on the dorsum of the right wrist.

Fig. 2.

(A) Anteroposterior radiograph of the right wrist shows a sclerosis area (arrow) of the distal pole of the capitate. (B) On lateral radiograph, there is cortical disruption (arrow) at the dorsal capitate with the overlying soft tissue swelling.

Fig. 3.

(A) Coronal T1-weighted magnetic resonance image (MRI) of right wrist shows a well circumscribed lesion (arrow) with central low signal in the capitate. MRI conditions were as follows: magnet strength 3.0T, fast spin echo, repetition time 670 msec, echo time 30 msec, field of view 11×11 cm, 2.0 thickness. (B) On axial T2-weighted with fat-suppression MR image obtained at the midcarpal level, this lesion (arrow) shows a hypointense center surrounded by hyperintense rim. There are extensive high signal suggesting bone marrow edema pattern in the remaining capitate, trapezoid and hamate with tenosynovitis of extensor carpi radialis brevis (arrow head). MRI conditions were as follows: magnet strength 3.0T, fast spin echo, repetition time 3,490 msec, echo time 68 msec, field of view 10 × 10 cm, 3.0 thickness.

Fig. 4.

(A) The degenerated cortical lesion was removed for exposing a nidus by osteotome. (B) A reddish oval shaped, 0.5 cm sized nidus.

Fig. 5.

A photomicrograph (H&E, × 100) shows fibrovasuclar zone and irregular trabeculae of the woven bone.

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