superior oblique muscle

(redirected from Superior oblique)
Also found in: Acronyms.

su·pe·ri·or o·blique mus·cle

(sŭ-pēr'ē-ŏr ō-blēk' mŭs'ĕl)
Origin, above the medial margin of the optic canal; insertion, by a tendon passing through the trochlea, or pulley, and then reflected backward, downward, and laterally to the sclera between the superior and lateral recti; action, primary, intorsion; secondary, depression and abduction; nerve supply, trochlear nerve.
Synonym(s): musculus obliquus superior [TA] .

superior oblique muscle

Extraocular muscle. Origin: sphenoid bone deep in medial side of orbit. Insertion: lateral surface of eyeball behind its equator. Nerve: trochlear (CN IV). Action: turns eye down and outward with medial rotation.
See also: muscle
References in periodicals archive ?
Thyroid ophthalmopathy presenting as superior oblique paresis.
Long-term results of an intraoperative adjustable superior oblique tendon suture spacer using nonabsorbable suture for Brown Syndrome.
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
crossed cranial nerve - it means that nerve nucleus innervates the contralateral superior oblique muscles
Acute retropharyngeal tendonitis (calcific tendonitis of the longus colli), initially described by Hartley in 1964, is an acute inflammation condition of the longus colli tendon, which is related to calcium hydroxyapatite deposition in the superior oblique fibers of the longus colli muscles.
The lateral rectus is innervated by the sixth cranial (abducens) nerve and the superior oblique by the fourth (trochlear) nerve.
Secondary IOOA develops due to weakness of the ipsilateral superior oblique muscle or the contralateral superior rectus muscle.
demonstrated that unilateral inferior oblique myectomy performed in 27 eyes with superior oblique palsy resulted in almost complete resolution of inferior oblique overaction and abnormal head position postoperatively.
Trochlea of Superior oblique, attached to trochlear fossa of frontal bone was detached with the help of a scalpel.
von Noorden GK, Murray E, Wong SY Superior oblique paralysis: A review of 270 cases.
We report a case of craniosynosrosis showing spontaneous improvement in presumed superior oblique palsy and V-pattern exocropia in long-term follow-up.

Full browser ?