Double-bellied superior rectus muscle

  title={Double-bellied superior rectus muscle},
  author={Satheesha B. Nayak and Surekha D Shetty and Naveen Kumar and Ashwini P Aithal},
  journal={Surgical and Radiologic Anatomy},
Congenital variations of extraocular muscles are rare. We report a double-bellied superior rectus muscle, observed in an adult male cadaver aged 70 years. The superior rectus muscle had two equal-sized bellies, which took separate origins from the common tendinous ring and united to form a common belly 1 cm before the insertion. Due to the duplication, the muscle extended laterally beyond the levator palpebrae superioris. Both its bellies were supplied by oculomotor nerve. To the best of our… 
Double-bellied medial rectus muscle in a patient with Down syndrome and congenital esotropia
A 13-year-old male with Down syndrome, pseudophakic secondary to congenital cataract presented with esotropia, and a unilateral two-bellied right medial rectus was identified and recessed successfully with complete resolution of the deviation.
Examination of the Annular Tendon (Annulus of Zinn) as a Common Origin of the Extraocular Rectus Muscles: 2. Embryological Basis of Extraocular Muscles Anomalies
The SR seemed to issue a thin tendon that passed along the inferior or lateral side of the oculomotor nerve, and the accessory head of the medial rectus muscle showed a stable morphology in that it seemed to also provide an anomalous double head.
Comparison of the Superior and Inferior Rectus Muscles in Humans: An Anatomical Study with Notes on Morphology, Anatomical Variations, and Intramuscular Innervation Patterns
A comparison of the superior and inferior rectus muscles was performed to determine whether they have similar structures and innervation attributable to their participation in the same type of,
Topographical anatomy of the annulus of Zinn
The anatomy and even existence of a common tendinous origin of the extraocular eye muscles, or annulus of Zinn, has widely been debated in anatomical literature. This study explored the anatomical
Normal Anatomy and Anomalies of the Rectus Extraocular Muscles in Human: A Review of the Recent Data and Findings
This issue of ERMs innervation was presented in detail, considering the research that has recently been carried out on human material using advanced anatomical techniques such as Sihler's technique of the nerves staining.


Anomalous Extraocular Muscles with Strabismus
An 8-month-old boy with Gorlin syndrome presented with a large right-face turn and constant exotropia of the left eye and orbital imaging revealed bilateral anomalous extraocular muscles inferolateral to the optic nerves.
Congenital entropion and hypotropia secondary to duplication of the inferior rectus muscle.
  • Tarek A. Shazly, S. Stefko
  • Medicine
    Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus
  • 2017
Accessory lateral rectus in a patient with normal ocular motor control.
  • Y. J. Liao, J. Hwang
  • Medicine, Biology
    Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society
  • 2014
A case of an incidentally found unilateral accessory lateral rectus muscle in a 51-year-old woman with normal ocular motor control is presented, demonstrating that accessory lateral Rectus in humans may have no impact on eye movement and ocular alignment.
Bilateral supernumerary rectus muscles of the orbit.
A bilateral anomaly of the rectus muscles and a unilateral variation of the levator palpebrae muscle were found in the right and left orbits of an 84-year-old man. The anomaly was in the form of a
An interesting case of bilateral bifid insertion of superior rectus muscle as an intra-operative finding in a patient with oculocutaneous albinism
We report a case of bilateral bifid insertion of superior rectus muscles, in a patient with oculocutaneous albinism as an incidental intraoperative finding during eye muscle surgery. The muscle was
An anomalous muscle linking superior and inferior rectus muscles in the orbit
Dissections of the bilateral orbits in a 45-year-old female cadaver, who had no ocular movement disorders in her lifetime, revealed anomalous muscles linking the superior and inferior rectus muscles.
Bilateral muscular slips between superior and inferior rectus muscles: case report with discussion on classification of accessory rectus muscles within the orbit
This report complements earlier publications and provides complete anatomical description of the accessory rectus muscle observed bilaterally during the dissection of a 68-year-old male cadaver with no eye movement abnormalities reported in the medical history.
The Gracillimus Orbitis Muscle.
The gracillimus orbitis muscle is an anomalous, accessory, or supernumerary extraocular muscle that, although is rarely seen clinically in the human orbit, has been identified in 5% to 14% of
Absence of the superior rectus muscle in Apert's syndrome.
A patient with classical Apert's syndrome is discussed along with the finding of absent superior rectus muscle. This anomaly may be more common than thought, especially in relation to craniofacial
Variations and anomalies of the human orbital muscles
Some rare and hitherto unreported uni- and bilateral anomalies of the orbital rectus muscles (duplications, triplication, accessory bellies, interrectal muscular bridges, false insertion) are described, found by chance during the dissections of three cadavers.