Omovertebral bone

Last revised by Daniel MacManus on 18 Jun 2024

The omovertebral bone (os omovertebrale) is present in ~35% (range 19-47%) of cases of Sprengel deformity.

Gross anatomy

It runs from the superomedial border of the scapula to the spinous processes, transverse processes or laminae of C4 to C7 1,2. Occasionally it can be bilateral 2. The connection from the scapula to the vertebrae may be fibrous or osseous.

Treatment and prognosis

Surgical removal of the omovertbral bone is recommended between ages 3-7 years.

Etymology

The prefix omo- refers to the scapula when used as a compound word in a medical context. This prefix is derived from ὦμος (ōmos), the Ancient Greek word for shoulder 5.

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