Os centrale carpi

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The os centrale carpi is an accessory ossicle of the wrist~~, in particular it lies~~ positioned dorsally between the scaphoid, the trapezoid and the capitate bones¹. As with most other accessory ossicles of the wrist, the os centrale carpi is a rare finding on imaging and is in the majority of cases an asymptomatic normal variant.

Epidemiology

It has an incidence of 0.3-1.6% ².

Development

It is thought to represent a separate ossification centre that is seen in the embryo at 6 weeks that fuses with the distal ulnar portion of the scaphoid at 8 weeks². ~~It has~~

Differential diagnosis

Related pathology

Os centrale carpi have been observed to cause symptoms such as intermittent pain, clicking and crepitus due to its mobility in the carpus. Osteonecrosis of of the os centrale carpi has been reported after trauma¹.

~~Epidemiology~~

~~It has an incidence of 0.3 - 1.6%~~².

~~Differential Diagnosis~~

~~Soft tissue calcification~~

~~Bipartite scaphoid~~

~~Nonunion of scaphoid fracture~~³

-<p>The os centrale carpi is an <a title="Accessory ossicle of the wrist" href="/articles/accessory-ossicles-of-the-wrist">accessory ossicle of the wrist</a>, in particular it lies dorsally between the scaphoid, the trapezoid and the capitate bones<sup>1</sup>. As with most other accessory ossicles of the wrist, the os centrale carpi is a rare finding on imaging and is in the majority of cases an asymptomatic normal variant. It is thought to represent a separate ossification centre that is seen in the embryo at 6 weeks that fuses with the distal ulnar portion of the scaphoid at 8 weeks<sup>2</sup>. It has been observed to cause symptoms such as intermittent pain, clicking and crepitus due to its mobility in the carpus. <a title="Osteonecrosis" href="/articles/avascular-necrosis">Osteonecrosis</a> of the os centrale carpi has been reported after trauma<sup>1</sup>. </p><p> </p><h4>Epidemiology</h4><p>It has an incidence of 0.3 - 1.6%<sup>2</sup>.</p><p> </p><h4>Differential Diagnosis</h4><ul>
~~-<li><a title="Soft tissue calcification" href="/articles/soft-tissue-calcification-2">Soft tissue calcification</a></li>~~
~~-<li><a title="Bipartite scaphoid" href="/articles/bipartite-scaphoid">Bipartite scaphoid</a></li>~~
~~-<li>Nonunion of scaphoid fracture<sup>3</sup>~~
+<p>The <strong>os centrale carpi</strong> is an <a href="/articles/accessory-ossicles-of-the-wrist">accessory ossicle of the wrist</a> positioned dorsally between the <a title="Scaphoid" href="/articles/scaphoid-1">scaphoid</a>, the <a title="Trapezoid" href="/articles/trapezoid">trapezoid</a> and the <a title="Capitate" href="/articles/capitate">capitate</a> bones <sup>1</sup>. As with most other accessory ossicles of the wrist, the os centrale carpi is a rare finding on imaging and is in the majority of cases an asymptomatic normal variant.</p><h4>Epidemiology</h4><p>It has an incidence of 0.3-1.6% <sup>2</sup>.</p><h4>Development</h4><p>It is thought to represent a separate ossification centre that is seen in the embryo at 6 weeks that fuses with the distal ulnar portion of the scaphoid at 8 weeks <sup>2</sup>. </p><h4>Differential diagnosis</h4><ul>
+<li><a href="/articles/soft-tissue-calcification-2">soft tissue calcification</a></li>
+<li><a href="/articles/bipartite-scaphoid">bipartite scaphoid</a></li>
+<li>nonunion of <a title="Scaphoid fracture" href="/articles/scaphoid-fracture">scaphoid fracture</a> <sup>3</sup>
~~-</ul>~~
+</ul><h4>Related pathology</h4><p>Os centrale carpi have been observed to cause symptoms such as intermittent pain, clicking and crepitus due to its mobility in the carpus. <a href="/articles/avascular-necrosis">Osteonecrosis</a> of the os centrale carpi has been reported after trauma <sup>1</sup>. </p>