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largest carnivore of Madagascar; intermediate in some respects between cats and civets (同)fossa cat, Cryptoprocta ferox
monotypic genus of Madagascar civets closely related to palm civets (同)genus Fossa

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/10/03 11:44:45」(JST)

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The ischioanal fossa (formerly called ischiorectal fossa) is the fat-filled space located lateral to the anal canal and inferior to the pelvic diaphragm. It is somewhat prismatic in shape, with its base directed to the surface of the perineum, and its apex at the line of meeting of the obturator and anal fasciae.

Boundaries[edit]

It has the following boundaries:^[1]

	ANTERIOR fascia of Colles covering the Transversus perinei superficialis inferior fascia of the urogenital diaphragm
LATERAL tuberosity of the ischium Obturator internus muscle obturator fascia	SUPERIOR: Levator ani INFERIOR: skin	MEDIAL: Levator ani Sphincter ani externus muscle anal fascia
	POSTERIOR Gluteus maximus sacrotuberous ligament

Contents[edit]

The contents include:

Inside Alcock's canal, on the lateral wall
- internal pudendal artery
- internal pudendal vein
- pudendal nerve
Outside Alcock's canal, crossing the space transversely
- inferior rectal artery
- inferior rectal veins
- inferior anal nerves
- fatty tissue across which numerous fibrous bands extend from side to side

References[edit]

^ analtrianglesection - Ischiorectal fossa is colored yellow

Additional images[edit]

Coronal section of anterior part of pelvis, through the pubic arch. Seen from in front.
The superficial branches of the internal pudendal artery.

External links[edit]

SUNY Cross Section apmalefrontal4-8
SUNY Labs 41:04-0103 - "The Female Perineum: The Ischioanal Fossa"
SUNY Anatomy Image 9246
Cross section at UV pelvis/pelvis-e12-15
perineum at The Anatomy Lesson by Wesley Norman (Georgetown University) (analtriangle2, femaleugtrianglesectionfascia)
Diagram at Emory University

This article incorporates text from a public domain edition of Gray's Anatomy.

This anatomy article is a stub. You can help Wikipedia by expanding it.

UpToDate Contents

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1. 女性泌尿生殖器の外科解剖学 surgical female urogenital anatomy
2. 肛門直腸瘻の外科的マネージメント operative management of anorectal fistulas
3. 肛門直腸瘻：臨床症状、診断、およびマネージメントの原則 anorectal fistula clinical manifestations diagnosis and management principles
4. 肛門周囲膿瘍：臨床症状、診断、および治療 perianal abscess clinical manifestations diagnosis treatment
5. 産科学的分娩により生じた血腫のマネージメント management of hematomas incurred as a result of obstetrical delivery

English Journal

Bakri balloon in vaginal-perineal hematomas complicating vaginal delivery: a new therapeutic approach.

Gizzo S, Saccardi C, Patrelli TS, Di Gangi S, D'Antona D, Battista Nardelli G.SourceDepartment of Woman and Child Health, University of Padua, Padua, Italy. ginecologia_padova@libero.it
Journal of lower genital tract disease.J Low Genit Tract Dis.2013 Apr;17(2):125-8. doi: 10.1097/LGT.0b013e318265246a.
OBJECTIVE: The study aimed to evaluate the effectiveness of Bakri balloon as a hemostatic device in severe postpartum hemorrhage due to complicated vaginal-perineal hematoma not responsive to standard surgical treatments.MATERIALS AND METHODS: The article discusses an effective and minimally invasiv
PMID 23343706

Anatomical basis of transgluteal approach for pudendal neuralgia and operative technique.

Peltier J.SourceDepartment of Neurosurgery, Amiens University Hospital, Place Victor Pauchet, 80054, Amiens Cedex 1, France, peltier.johann@chu-amiens.fr.
Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2013 Feb 28. [Epub ahead of print]
BACKGROUND: Pudendal neuralgia is an entrapment syndrome whose both anatomic landmarks and operative technique remain relatively unfamiliar to neurosurgeons.OBJECTIVE: To provide an outline of operative steps that is important to correct application of this approach.METHODS: Surgical illustrations a
PMID 23455364

Local excision with adjuvant imatinib therapy for anorectal gastrointestinal stromal tumors.

Centonze D, Pulvirenti E, Pulvirenti D'Urso A, Franco S, Cinardi N, Giannone G.SourceDivision of Surgical Oncology, Department of Oncology, Ospedale Garibaldi Nesima, Via Palermo 636, 95122, Catania, Italy.
Techniques in coloproctology.Tech Coloproctol.2013 Jan 30. [Epub ahead of print]
Rectal gastrointestinal stromal tumors (GISTs) are uncommon, and the role of local excision versus a more extensive resection after the advent of effective targeted chemotherapy with imatinib is not known. Our aim is to present two cases of large anorectal GIST treated with local excision through a
PMID 23361497

Japanese Journal

MRIで解析した坐骨・骨盤直腸窩痔瘻の進展のルール

加川隆三郎,野村英明,武田亮二,山本道宏
日本大腸肛門病学会雑誌 61(4), 151-160, 2008-04-01
III型，IV型痔瘻の真の形態を追求するため，75例のMRI所見について検討，以下の進展のルールが得られた．（1）III, IV型痔瘻の端緒たる膿瘍は，後方の浅あるいは深外肛門括約筋内，または内外肛門括約筋間に存在する(75例）．（2）IIIB型痔瘻は，後方の外肛門括約筋内で2方向に分岐し括約筋外にでる(15例）．（3）IIIU型痔瘻は，5時，7時方向で括約筋外にでて前側方に2次口を形成するが(2 …
NAID 10021303137

痔瘻の新分類―後方複雑痔瘻および低位筋間痔瘻を明確化した痔瘻分類

栗原浩幸,金井忠男,石川徹,金井慎一郎,石川啓一,張文誠
日本大腸肛門病学会雑誌 61(8), 467-475, 2008
目的: 低位筋間痔瘻および後方複雑痔瘻を，解剖学的知見をもとに明確化し，肛門診療で基準となる痔瘻分類を示す．会陰骨盤間隙: 会陰骨盤間隙を皮下·粘膜下隙(IL·IH，境界は歯状線），低位·高位括約筋間隙(IIL·IIH，境界は歯状線），肛門周囲隙(IIL），坐骨直腸窩(III），肛門挙筋上隙(IV）に分ける．さらに坐骨直腸窩を低位と高位に区分する(IIIL& …
NAID 130000104919

「坐骨直腸窩」

Ischioanal fossa
	The perineum. The integument and superficial layer of superficial fascia reflected. (Ischiorectal fossa labeled at bottom left.)
	The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx. (Ischiorectal fossa labeled at bottom right.)
Latin	fossa ischioanalis
Gray's	subject #120 425

　　[★]

英: ischiorectal fossa (KL)
ラ: fossa ischiorectalis
同: 坐骨肛門窩 ischioanal fossa
関: 骨盤隔膜

坐骨直腸窩は肛門管の両側にある(KL.471)
前頭断では、上内側は斜めに下行する骨盤隔膜(肛門挙筋)により境され、外側では骨盤側壁(内閉鎖筋)によって境される(KL.471)
坐骨直腸窩の外側壁に沿って陰部神経管が位置している

[1] analtrianglesection - Ischiorectal fossa is colored yellow

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案内

案内

ischiorectal fossa