LACRIMAL BONE ANATOMY
Lacrimal Bone - X-Ray View, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.
TABLE OF CONTENTS
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Read AR Atlas →GENERAL CHARACTERISTICS
What is the lacrimal bone?
- Small paired cranial bone
- Situated in anterior portion of your medial orbital wall
- Essential for orbital architecture
- Contributes to lacrimal apparatus function
- Involved in your tear production
- Involved in your tear drainage
ARTICULATIONS
Lacrimal Bone - Disarticulated View, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.
What bones does the lacrimal bone articulate with?
- Frontal bone
- Ethmoid bone
- Maxilla
- Inferior nasal concha
SURFACE FEATURES
Posterior Lacrimal Crest
What is the posterior lacrimal crest?
- Vertical ridge on lateral surface
- Provides attachment for lacrimal part of orbicularis oculi
- Forms posterior boundary of lacrimal sac fossa
- Participates in your tear collection and drainage
Lacrimal Groove
What is the lacrimal groove?
- Longitudinal depression
- Located anterior to posterior lacrimal crest
- Combines with lacrimal groove of maxilla
- Together form the lacrimal fossa
- Lacrimal fossa houses your lacrimal sac
- Enables your tear flow from ocular surface to nasolacrimal duct
Lacrimal Hamulus
What is the lacrimal hamulus?
- Small hook-shaped projection
- Located at inferior aspect of bone
- Extends downward
- Articulates with maxilla
- Contributes to your nasolacrimal canal formation
BIBLIOGRAPHY
1. Henry G, Warren HL. Osteology. In: Anatomy of the Human Body. 20th ed. Philadelphia: Lea & Febiger; 1918. p. 129–97.