3D CONTENT
3D OSTEOLOGY
3D VISCEROCRANIUM

LACRIMAL BONE ANATOMY

Lacrimal bone anatomy 360-degree interactive viewer showing posterior lacrimal crest, lacrimal groove, lacrimal hamulus, and position in medial orbital wall

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

GENERAL CHARACTERISTICS

  • Small paired cranial bone
  • Situated in anterior portion of medial orbital wall
  • Essential for orbital architecture
  • Contributes to lacrimal apparatus function
    • Involved in tear production
    • Involved in tear drainage

ARTICULATIONS

Disarticulated lacrimal bone 360-degree viewer showing articulations with frontal bone, ethmoid bone, maxilla, and inferior nasal concha

Lacrimal Bone - Disarticulated View, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.

  • Frontal bone
  • Ethmoid bone
  • Maxilla
  • Inferior nasal concha

SURFACE FEATURES

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 tear collection and drainage

Lacrimal Groove

  • Longitudinal depression
  • Located anterior to posterior lacrimal crest
  • Combines with lacrimal groove of maxilla
  • Together form the lacrimal fossa
  • Lacrimal fossa houses the lacrimal sac
  • Enables tear flow from ocular surface to nasolacrimal duct

Lacrimal Hamulus

  • Small hook-shaped projection
  • Located at inferior aspect of bone
  • Extends downward
  • Articulates with maxilla
  • Contributes to 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.

⋮⋮ Lacrimal Bone Quiz
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