WordNet

of or characteristic of low rank or importance
one of lesser rank or station or quality
having an orbit between the sun and the Earths orbit; "Mercury and Venus are inferior planets"
lower than a given reference point; "inferior alveolar artery"
of low or inferior quality
make ones way by force; "He muscled his way into the office"
animal tissue consisting predominantly of contractile cells (同)muscular_tissue
one of the contractile organs of the body (同)musculus
authority or power or force (especially when used in a coercive way); "the senators used their muscle to get the party leader to resign"
slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled; "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base"
any grammatical case other than the nominative (同)oblique case

PrepTutorEJDIC

(階級・親分・質・程度などが)『下の』,『劣る』, / (位置が)低い,下方の / 目下の者;劣った人
〈U〉(動物体の組織としての)『筋肉』,筋(きん);〈C〉(体の各部を動かす)筋肉 / 〈U〉力,(特に)筋力,腕力 / 《俗に》(…に)強引に割り込む《+『in on』(『into, through』)+『名』》
傾いた,斜めの / 間接の,遠回しの / 〈C〉〈U〉斜線(/)
筋肉の,筋力のある / 力ずくの

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/01/22 11:46:17」(JST)

wiki en

The inferior oblique muscle or obliquus oculi inferior is a thin, narrow muscle placed near the anterior margin of the floor of the orbit. The inferior oblique is an extraocular muscle, and is attached to the maxillary bone (origin) and the posterior, inferior, lateral surface of the eye (insertion). The inferior oblique is innervated by the inferior branch of the oculomotor nerve.

Structure

The inferior oblique arises from the orbital surface of the maxilla, lateral to the lacrimal groove. Unlike most of the other extraocular muscles (recti and superior oblique), the inferior oblique muscle does not originate from the common tendinous ring (annulus of Zinn).

Passing lateralward, backward, and upward, between the inferior rectus and the floor of the orbit, and just underneath the lateral rectus muscle, the inferior oblique inserts onto the scleral surface between the inferior rectus and lateral rectus.

In humans, the muscle is about 35 mm long.^[1]

Innervation

The inferior oblique is innervated by the inferior division of the oculomotor nerve (cranial nerve III).

Function

Its actions are extorsion, elevation and abduction of the eye.

Primary action is extorsion (external rotation); secondary action is elevation; tertiary action is abduction (i.e. it extorts the eye and moves it upward and outwards). The field of maximal inferior oblique elevation is in the adducted position.

The inferior oblique muscle is the only muscle that is capable of elevating the eye when it is in a fully adducted position.^[2]

Clinical significance

While commonly affected by palsies of the inferior division of the oculomotor nerve, isolated palsies of the inferior oblique (without affecting other functions of the oculomotor nerve) are quite rare.

"Overaction" of the inferior oblique muscle is a commonly observed component of childhood strabismus, particularly infantile esotropia and exotropia. Because true hyperinnervation is not usually present, this phenomenon is better termed "elevation in adduction".^[3]

Surgical procedures of the inferior oblique include: loosening (also known as recession see Strabismus surgery), myectomy, marginal myotomy, and denervation and extirpation.

Additional images

Eye movement of lateral rectus muscle, superior view
Eye movement of medial rectus muscle, superior view
Eye movement of inferior rectus muscle, superior view
Eye movement of superior rectus muscle, superior view
Eye movement of superior oblique muscle, superior view
Eye movement of inferior oblique muscle, superior view
Anterior view

Dissection showing origins of right ocular muscles, and nerves entering by the superior orbital fissure.
Inferior oblique muscle
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.

References

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

^ Riordan-Eva, P (2011). Vaughan & Asbury's General Ophthalmology. (18th ed.). New York: McGraw-Hill Medical. ISBN 978-0071634205.
^ "Eye Theory". Cim.ucdavis.edu. Retrieved 2012-12-07.
^ Kushner BJ (2006). "Multiple mechanisms of extraocular muscle 'overaction'". Arch Ophthalmol 124 (5): 680–8. doi:10.1001/archopht.124.5.680. PMID 16682590.

External links

-133824433 at GPnotebook
Anatomy figure: 29:01-08 at Human Anatomy Online, SUNY Downstate Medical Center
lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University) (orbit5)
Image at childrenshospital.org

UpToDate Contents

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5. 筋力低下患者へのアプローチ approach to the patient with muscle weakness

English Journal

Medial transposition of split lateral rectus augmented with fixation sutures in cases of complete third nerve palsy.

Saxena R1, Sharma M1, Singh D1, Dhiman R1, Sharma P1.
The British journal of ophthalmology.Br J Ophthalmol.2016 May;100(5):585-7. doi: 10.1136/bjophthalmol-2015-307583. Epub 2016 Jan 12.
Surgical management of complete third nerve paralysis is a challenge. While several techniques have been described over the years, they result in less than satisfactory outcomes with residual deviations in primary gaze or postoperative drifts. One of the described techniques for management of oculom
PMID 26758537

Changes in the axis of astigmatism and in the fundus torsion following inferior oblique muscle weakening.

Awadein A1, El-Fayoumi D2, Zedan RH2.
Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus / American Association for Pediatric Ophthalmology and Strabismus.J AAPOS.2016 Apr 29. pii: S1091-8531(16)30052-0. doi: 10.1016/j.jaapos.2016.03.008. [Epub ahead of print]
PURPOSE: To study the changes in the fundus torsion and in the axis of astigmatism following inferior oblique (IO) myectomy in patients with inferior oblique overaction (IOOA).METHODS: The degree of fundus torsion and corneal astigmatism were prospectively evaluated before and 3 months after IO myec
PMID 27138808

Ascending vestibular drive is asymmetrically distributed to the inferior oblique motoneuron pools in a subset of hemispheric stroke survivors.

Miller DM1, Baker JF2, Rymer WZ3.
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology.Clin Neurophysiol.2016 Apr;127(4):2022-30. doi: 10.1016/j.clinph.2016.01.019. Epub 2016 Feb 18.
OBJECTIVE: Aberrant vestibular nuclear function is proposed to be a principle driver of limb muscle spasticity after stroke. Although spasticity does not manifest in ocular muscles, we sought to determine whether altered cortical modulation of ascending vestibuloocular pathways post-stroke could imp
PMID 26971485

Japanese Journal

成人鼠径ヘルニア用半吸収性メッシュで修復した特発性上腰ヘルニアの1例

日本腹部救急医学会雑誌 37(3), 421-425, 2017
NAID 130005834727

眼窩底骨折整復術後に僚眼の下斜筋過動を呈した1例 (第69回日本臨床眼科学会講演集(3))

臨床眼科 70(5), 719-723, 2016-05
NAID 40020831598

片眼性下直筋麻痺で初発した全身型重症筋無力症の1例

神経眼科 33(3), 259-265, 2016
NAID 130005267077

Related Pictures

9/21 Oculomotor, Trochlear & Abducens at North Carolina State University - StudyBlue Uses of the inferior oblique muscle in strabismus surgery Stager D, Dao LM, Felius J Eom ppt Human A&P: Anatomy of the Eye | Doovi Inferior oblique muscle of the eye - Human Anatomy | Kenhub - YouTube Inferior oblique: Attachments, innervation and function | Kenhub Muscles of Eye - Ophthalmology - Medbullets Step 2/3 There are six extraocular muscles that move the globe (eyeball). These muscles are

★リンクテーブル★

リンク元	「下斜筋」
関連記事	「inferior」「oblique」「inferio」「muscle」

「下斜筋」

Inferior oblique
	Rectus muscles:; 2 = superior, 3 = inferior, 4 = medial, 5 = lateral; Oblique muscles: 6 = superior, 8 = inferior; Other muscle: 9 = levator palpebrae superioris; Other structures: 1 = Annulus of Zinn, 7 = Trochlea, 10 = Superior tarsus, 11 = Sclera, 12 = Optic nerve
	Sagittal section of right orbital cavity.
Details
Latin	musculus obliquus inferior bulbi
Origin	orbital surface of the maxilla, lateral to the lacrimal groove
Insertion	laterally onto the eyeball, deep to the lateral rectus, by a short flat tendon
Artery	ophthalmic artery
Nerve	oculomotor nerve
Actions	extorsion, elevation, abduction
Identifiers
Dorlands; /Elsevier	m_22/12549875
TA	A15.2.07.019
FMA	49040
	Anatomical terms of muscle [edit on Wikidata]

　　[★]

英: inferior oblique (K), inferior oblique muscle, IO
ラ: musculus obliquus inferior
関: 眼筋群

「inferior」

　　[★]

adj.

下位の、下方の、劣る、劣性の

関: inferio、inferiorly、infra、lower、recessive、recessively、recessiveness

「oblique」

　　[★]

adj.

斜位の、斜めの、傾斜した、斜方の

関: heterophoria、inclination、incline、obliquely、phoria、skewing

「inferio」

　　[★]

comb form.

下位の、下

関: inferior、inferiorly、infra、lower、sub、underneath

「muscle」

　　[★]

n.

筋肉

[Vaughn.26Ashburys-1] Riordan-Eva, P (2011). Vaughan & Asbury's General Ophthalmology. (18th ed.). New York: McGraw-Hill Medical. ISBN 978-0071634205.

[2] "Eye Theory". Cim.ucdavis.edu. Retrieved 2012-12-07.

[3] Kushner BJ (2006). "Multiple mechanisms of extraocular muscle 'overaction'". Arch Ophthalmol 124 (5): 680–8. doi:10.1001/archopht.124.5.680. PMID 16682590.

匿名

検索

案内

案内

inferior oblique muscle