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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/10/28 06:13:47」(JST)

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The hiatus semilunaris (or semilunar hiatus) is a crescent-shaped groove in the lateral wall of the nasal cavity just inferior to the ethmoidal bulla. It is the location of the openings for the frontal sinus, maxillary sinus, and anterior ethmoidal sinus. It is bounded inferiorly and anteriorly by the sharp concave margin of the uncinate process of the ethmoid bone, superiorly by the ethmoidal bulla, and posteriorly by the ethmoidal process of the inferior nasal concha.

Sinus Drainage

Following the curve anteriorly leads into the infundibulum of the frontonasal duct, which drains the frontal sinus.

The anterior ethmoidal cells of the ethmoidal sinus open into the front part of the infundibulum as well. In slightly over 50% of subjects, this is directly continuous with the frontonasal duct from the frontal air sinus. When the anterior end of the uncinate process fuses with the front part of the bulla, however, this continuity is interrupted and the frontonasal duct then drains directly into the anterior end of the middle meatus.

The ostium for the maxillary sinus opens posteriorly in this groove and is the largest ostium within the semilunar hiatus.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

Anatomy figure: 33:04-05 at Human Anatomy Online, SUNY Downstate Medical Center

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UpToDate Contents

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English Journal

Migrated maxillary implant removed via semilunar hiatus by transnasal endoscope.

Kitamura A1, Zeredo JL.
Implant dentistry.Implant Dent.2010 Feb;19(1):16-20. doi: 10.1097/ID.0b013e3181c419a8.
Endoscopic surgery via nasal approach to remove the implant body from the semilunar hiatus is presented with the images of the computed tomography and the intraoperative endoscopic findings.
PMID 20147812

[Bulla ethmoidalis uncinata: theoretical and practical implications].

Mashkova TA, Isaev AV.
Vestnik otorinolaringologii.Vestn Otorinolaringol.2010;(5):7-9.
The authors describe the previously unknown morphological structure, bulla ethmoidalis uncinata, located at the medial plate of ethmoidal labyrinth that forms the upper part of the lateral wall of the nasal cavity in the region of middle nasal meatus. It was shown that the absence of semilunar hiatu
PMID 21191341

Maxillary sinus anatomy: a cadaveric study with clinical implications.

Gosau M1, Rink D, Driemel O, Draenert FG.
Anatomical record (Hoboken, N.J. : 2007).Anat Rec (Hoboken).2009 Mar;292(3):352-4. doi: 10.1002/ar.20859.
This study measured maxillary sinus volume, evaluated the location of the semilunar hiatus in correlation to the nasal floor, and the incidence, location, and height of antral septa and discusses their clinical implications. Maxillary sinus volume was quantified in 65 cadavers (130 sinuses) by water
PMID 19248167

Japanese Journal

Migrated maxillary implant removed via semilunar hiatus by transnasal endoscope.

Kitamura Akira,Zeredo Jorge L
Implant dentistry 19(1), 16-20, 2010-02
… Endoscopic surgery via nasal approach to remove the implant body from the semilunar hiatus is presented with the images of the computed tomography and the intraoperative endoscopic findings. …
NAID 120002737110

上顎に埋入したインプラント撤去後に上顎洞炎を生じた2例

古原優樹,田中昭生,高藤洋之,大野純
日本口腔インプラント学会誌 19(2), 193-197, 2006
… In addition, ethmoidectomy and enlargement of the semilunar hiatus were simultaneously performed with an endoscope in cooperation with an otolaryngologist. …
NAID 130004631814

<臨床>上顎洞アスペルギルス症の3例

笠井直栄,武藤祐一
新潟歯学会雑誌 29(1), 23-27, 1999-07
… At all cases, Caldwell-Luc operation was performed under general anesthesia, a fungus ball was found near the semilunar hiatus. …
NAID 110000299573

「半月裂孔」

Semilunar hiatus
	Lateral wall of nasal cavity; the three nasal conchæ have been removed. (Third caption from the top.)
Details
Latin	hiatus semilunaris
Identifiers
Gray's	p.995
Dorlands; /Elsevier	h_11/12422076
TA	A06.1.02.028
FMA	75057
	Anatomical terminology