inferior oblique muscle

(redirected from Inferior oblique)

in·fer·i·or ob·lique mus·cle

(in-fēr'ē-ŏr ō-blēk' mŭs'ĕl)
Origin, orbital plate of maxilla lateral to the lacrimal groove; insertion, sclera between the superior and lateral recti; action, primary, extorsion; secondary, elevation and abduction; nerve supply, oculomotor (inferior branch).
Synonym(s): musculus obliquus inferior [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

inferior oblique muscle

Extraocular muscle. Origin: inside front lower margin of maxillary part of orbit. Insertion: lateral surface of eyeball behind its equator. Nerve: oculomotor (CN III). Action: turns eye up and outward with lateral rotation.
See: extraocular for illus.
See also: muscle
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
(1) In acquired SO palsy, torsional diplopia occurs as a result of weakened intorsional effect and the greater extorsional effect of the inferior oblique (IO) muscle.
c) There is overaction of all muscles in the left eye except medial rectus and inferior oblique
The levator palpebrae superioris, pupillary sphincter muscle, and four extraocular muscles (the superior rectus, inferior rectus, medial rectus, and inferior oblique muscles) are innervated by the oculomotor nerve.
It exists in complex with multiple independent subnuclei, controlling the superior, inferior, and medial rectus muscle, inferior oblique muscle, levator palpebrae superioris muscle, and sphincter pupillae, respectively.
A 3-year, 8-month-old female patient underwent disinsertion of right inferior oblique and general anesthesia and following the diagnosis of "right superior oblique muscle paralysis." During the first postoperative month, the patient's mother found her eye showed a restricted up-gaze and limited inferior turn (Figure 3(a)), and swelling of the lower right eyelid was also evident due to the massive size of the cyst.
There was enhancement and thickening of the left inferior oblique muscle measuring 8.31 mm.
Patel, "Intramuscular hemangioma of the inferior oblique: a rare cause of extraocular muscle enlargement," JAMA Ophthalmology, vol.
They innervate superior rectus, inferior rectus, medial rectus and inferior oblique muscle, and levator palpebrae muscle.
Table 1: Extraocular examination of left eye Extraocular muscle Function Movement of left eye Medial rectus Adduction Absent Superior rectus Elevator in abduction Absent Inferior rectus Depressor in abduction Absent Inferior oblique Elevator in adduction Absent Superior oblique Depressor in adduction Present but not full Lateral rectus Abduction Absent
Elevation defective in upgaze both in abduction and adduction (revealing right superior rectus and right inferior oblique palsy).
Cranial nerve III (CN III) innervates the superior, inferior, medial recti and the inferior oblique muscles.

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