Os styloideum

Carpal
bossing in der seitlichen Röntgenaufnahme der Handwurzel.
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Carpal boss
in der Computertomographie: 2 nebeneinander liegende Schichten einer sagittalen MPR.
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Carpal boss
in der Computertomographie: VR-3D-Rekonstruktion. Pseudarthrotische Verbindung der Knochenvorsprünge am Metacarpale 3 und am Os trapezoideum.
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Os styloideum
als nicht verschmolzene Variante des Carpal boss.
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Os styloideum
 
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Accessory
ossicles of the wrist • Ossicles of the wrist and hand - Ganzer Fall bei Radiopaedia
Jones J, Ossicles of the wrist and hand. Case study, Radiopaedia.org (Accessed on 23 Nov 2022) https://doi.org/10.53347/rID-24102 • CC by-nc-sa 3.0 (modified)
nicht verwechseln mit: Os styloideum ulnae
Radiopaedia • CC-by-nc-sa 3.0 • de

The os styloideum is an accessory ossicle of the wrist, situated between the 2and 3metacarpal bases.

Radiographic appearance

Given its position next to the 2 and 3 metacarpal bases, it may be mistaken for a fracture, though this should not occur if an adequate lateral radiograph is assessed .

Related pathology

It may be implicated in degenerative conditions such as osteoarthritis with localized pain occurring at this region .

Differential diagnosis

Siehe auch:
Assoziationen und Differentialdiagnosen zu Os styloideum:
Akzessorische
Handknochen
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Carpal boss
 
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Os styloideum
ulnae
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