J Korean Bone Joint Tumor Soc.  2012 Dec;18(2):109-112. 10.5292/jkbjts.2012.18.2.109.

Huge Turret Exostosis of Metacarpus: A Case Report

• Kang ST
• Kim TH
• Kim HW

• KMID: 1431680
• DOI: http://doi.org/10.5292/jkbjts.2012.18.2.109

Abstract

A turret exostosis was known a smooth, dome-shaped extracortical collection of subperiosteal bone beneath the extensor apparatus. In most cases, turret exostosis involve middle and distal phalanges compared with involving metacarpal cases have been rarely reported in the literature.

Keyword

metacarpus; turret exostosis

MeSH Terms

Exostoses
Metacarpus

Figure

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  Figure 1 (A) Posteroanterior and (B) oblique radiographs of the hand show large soft tissue mass with ossification on the fifth metacarpal head to shaft area, reveal a mature turret exostosis.

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  Figure 2 (A) Initial bone scanreveals an active heterotopic ossification lesion around the fifth metacarpal area and (B) six months follow up bone scan shows decreased hot uptake lesion of the fifth metacarpal area.

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  Figure 3 (A) Excised mass and (B) horizontally cut.

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  Figure 4 Histopathologic examinationdefinitely diagnosed as turret exostosis including mature bone, cartilage and fiber membrane. (A) H&E stain ×100. (B) ×200.

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  Figure 5 Gross pictures after one year and six months from surgery demonstrate the fifth interphalangeal joint and the fifth MCP joint are capable of full flexion.

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  Figure 6 Radiographs of hand after one year and six months from surgery shows no definite evidence of recurrence.

Reference

1. Wissinger HA, McClain EJ, Boyes JH. Turret exostosis. Ossifying hematoma of the phalanges. J Bone Joint Surg Am. 1966. 48:105–110.

2. Rubin JA, Steinberg DR. Turret exostosis of the metacarpal: a case report. J Hand Surg Am. 1996. 21:296–298.

3. Kontogeorgakos VA, Lykissas MG, Mavrodontidis AN, et al. Turret exostosis of the hallux. J Foot Ankle Surg. 2007. 46:130–132.

4. LeClere LE, Riccio AI, Helmers SW, Thompson KE. Turret exostosis of the talus. Orthopedics. 2010. 33:517.