Lacrimal crest

Lacrimal Crest

The lacrimal crest is a bony feature of the human skull, specifically located in the orbital region. It is part of the lacrimal bone, which is one of the smallest and most fragile bones of the skull. The lacrimal crest is divided into two parts: the anterior lacrimal crest and the posterior lacrimal crest.

Anatomy

The anterior lacrimal crest is a thin, sharp margin that forms the frontal process of the maxilla. It is adjacent to the lacrimal groove, which leads to the lacrimal sac and the nasolacrimal duct. The posterior lacrimal crest, on the other hand, is part of the lacrimal bone and is located posterior to the lacrimal groove.

Function

The primary function of the lacrimal crest is to provide structural support to the lacrimal sac, which is part of the lacrimal apparatus. This apparatus is responsible for the production, distribution, and drainage of tears.

Clinical Significance

Damage or abnormalities to the lacrimal crest can lead to issues with tear drainage, potentially causing conditions such as epiphora, where tears overflow onto the face, or dacryocystitis, which is an infection of the lacrimal sac.

See Also

• Lacrimal bone
• Lacrimal apparatus
• Human skull