Morphometric study of the medial orbital wall emphasizing the ethmoidal foramina

Area of Science:

• Anatomy
• Surgical Anatomy
• Anthropology

Background:

• Ethmoidal foramina exhibit variations on the medial orbital wall.
• These variations are critical for surgeons performing endonasal, anterior cranial fossa, and medial orbital wall surgeries.
• Awareness of these foramina is vital due to their proximity to the orbital apex and potential for hemorrhage.

Purpose of the Study:

• To document the morphometric distances of ethmoidal foramina.
• Measurements were taken from the anterior lacrimal crest to the optic canal in South Indian dry human skulls.

Main Methods:

• Analysis of 44 adult dry human skulls.
• Direct inspection to identify the presence and location of ethmoidal foramina.
• Morphometric measurements using a ruler, probe, and magnifying glass.

Main Results:

• Posterior ethmoidal foramina were consistently present bilaterally.
• Anterior and middle ethmoidal foramina showed variable presence.
• Specific distances were recorded between the anterior lacrimal crest, ethmoidal foramina, and the optic canal.

Conclusions:

• The morphometric data aids in predicting anatomical variations of ethmoidal foramina.
• This knowledge enhances the safety and precision of medial orbital wall surgeries.
• It helps prevent iatrogenic injuries to neurovascular structures during surgical procedures.