J Korean Orthop Assoc.  2018 Oct;53(5):449-452. 10.4055/jkoa.2018.53.5.449.

Isolated Symptomatic Scapho-Lunate Coalition without Accompanying Anomalies

• Choi HY
• Kim JH
• Min HJ
• Kim JW

• KMID: 2424105
• DOI: http://doi.org/10.4055/jkoa.2018.53.5.449

Abstract

A carpal coalition that indicates the fusion of two carpal bones resulting from the failure of differentiation is a rare condition compared to the tarsal coalition. The most common carpal coalition is the luno-triquetral coalition, followed by the capitate-hamate coalition. Most of these coalitions are usually asymptomatic. Thus far, only a few cases of a coalition between the scaphoid and lunate with accompanied anomalies in the ipsilateral hand, such as accessory carpal bone or ray deficiency, have been reported. We present, for the first time, a case of a symptomatic isolated scapho-lunate coalition without any accompanying anomalies.

Keyword

coalition; carpal coalition; scarpho-lunate coalition

MeSH Terms

Carpal Bones
Hand

Figure

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  Figure 1 Limitation of dorsiflexion of the right wrist.

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  Figure 2 (A) Simple posterolateral radiograph showing decreased scapho-lunate joint space with blurring of the margin (arrow). (B) Lateral radiograph showing a suspicious bony lesion on dorsal side of the lunate (arrow). L, left; R, right.

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  Figure 3 (A) Computed tomography (CT) axial view showing partial bony connection of the scaphoid and lunate at the dorsal side. (B) Three-dimensional reconstruction of a CT scan showing the scapho-lunate coalition.

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