Orbitalplattan

Orbitalplattan is the term used in Swedish-language anatomy to denote the orbital plate, the portion of the frontal bone that forms the roof of the eye socket. It is a thin, curved bony plate that helps separate the contents of the orbit from the anterior cranial fossa and contributes to the superior orbital margin.

Anatomically, the orbitalplattan lies at the top of the orbit and interfaces with the frontal bone anteriorly. Posteriorly it articulates with the lesser wing of the sphenoid, while its lateral aspect forms part of the lacrimal fossa, where the lacrimal gland sits. The plate participates in shielding the orbital contents and provides a stable base for the orbital walls.

Developmentally, the orbitalplattan forms by intramembranous ossification as part of the frontal bone. Its thickness is relatively small and can vary among individuals and with age, but it generally remains a thin, durable structure that protects the orbit and its contents.

Clinically, injuries involving the orbital roof can implicate the orbitalplattan, especially in blunt trauma. Fractures of this region may risk communication with the anterior cranial fossa and can be associated with complications such as orbital emphysema or intracranial injury. Imaging for suspected injuries typically relies on computed tomography for detailed bone visualization.

In summary, the orbitalplattan is the orbital plate of the frontal bone that forms the roof of the orbit, with important anatomical and clinical relevance in orbital anatomy and traumatic injury. See also orbit, frontal bone, lacrimal fossa, and orbital roof.