The occipitomastoid suture is a cranial suture between the Os occipitale and the mastoid part of the Os temporale[^1].
Anatomy
The occipitomastoid suture ends at the Asterion and continues as the Lambdoid suture.
Clinical relevance
Like any suture, the occipitomastoid suture is considered an anatomical weak point, and traumatic forces can cause separation of the suture (Suture separation). Intraoperatively, the suture is usually readily visible; otherwise, it can be better visualized with the aid of hydrogen peroxide.
