Obliquus Capitis Inferior: Difference between revisions

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== Description  ==
== Description  ==


Obliquus Capitis Inferior (also known as the Inferior Oblique) is a small muscle that runs posteriorly and inferomedially from C1 to C2. It is situated under the deep cervical vein and comprises the inferior boarder of the suboccipital triangle.<ref name="Grants">Agur AMR, Dalley AF (2012). Grant's Atlas of Anatomy (13th ed). Philadelphia, PA: Lippincott Williams &amp; Wilkins.</ref> It is the only suboccipital muscle that does not attach to the skull.<ref name="T&S">Travell JG, Simons DG, Simons LS (1998). Travell and Simons' Myofascial Pain and Dysfunction: The Trigger Point Manual, Volume 1: Upper Half of Body (2nd ed). Baltimore, MD: Williams &amp; Wilkins.</ref>  
Obliquus Capitis Inferior (also known as the Inferior Oblique) is a small muscle that runs posteriorly and inferomedially from C1 to C2. It is situated under the deep cervical vein and comprises the inferior boarder of the suboccipital triangle.<ref name="Grants">Agur AMR, Dalley AF (2012). Grant's Atlas of Anatomy (13th ed). Philadelphia, PA: Lippincott Williams &amp;amp; Wilkins.</ref> It is the only suboccipital muscle that does not attach to the skull.<ref name="T&S">Travell JG, Simons DG, Simons LS (1998). Travell and Simons' Myofascial Pain and Dysfunction: The Trigger Point Manual, Volume 1: Upper Half of Body (2nd ed). Baltimore, MD: Williams &amp;amp; Wilkins.</ref>  


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== Proximal Attachment (Origin) ==
== Origin  ==


Base of spine and adjoining lamina of the axis.<ref name="AE">http://www.anatomyexpert.com/structure_detail/5213/</ref>  
Base of spine and adjoining lamina of the axis.<ref name="AE">http://www.anatomyexpert.com/structure_detail/5213/</ref>  


== Distal Attachment (Insertion) ==
== Insertion  ==


Along the inferior aspect of the tip of the transverse process of the atlas.<ref name="AE" />  
Along the inferior aspect of the tip of the transverse process of the atlas.<ref name="AE" />  

Revision as of 17:41, 21 February 2014

Original Editor - Evan Thomas

Lead Editors - Evan Thomas, WikiSysop, Tarina van der Stockt and Kim Jackson  

Description[edit | edit source]

Obliquus Capitis Inferior (also known as the Inferior Oblique) is a small muscle that runs posteriorly and inferomedially from C1 to C2. It is situated under the deep cervical vein and comprises the inferior boarder of the suboccipital triangle.[1] It is the only suboccipital muscle that does not attach to the skull.[2]

OCI_post_view
OCI_right_lateral_view

Origin[edit | edit source]

Base of spine and adjoining lamina of the axis.[3]

Insertion[edit | edit source]

Along the inferior aspect of the tip of the transverse process of the atlas.[3]

Nerve Supply[edit | edit source]

Suboccipital nerve or dorsal ramus of cervical spinal nerve (C1).[3]

Blood Supply[edit | edit source]

Vertebral artery and the deep descending branch of the occipital artery.[3]

Action[edit | edit source]

Ipsilateral rotation of the atlantoaxial joint.[1]

Trigger Point Referral Pattern[2][edit | edit source]

OCI_post_view

Recent Related Research (from Pubmed)[edit | edit source]

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References[edit | edit source]

  1. 1.0 1.1 Agur AMR, Dalley AF (2012). Grant's Atlas of Anatomy (13th ed). Philadelphia, PA: Lippincott Williams &amp; Wilkins.
  2. 2.0 2.1 Travell JG, Simons DG, Simons LS (1998). Travell and Simons' Myofascial Pain and Dysfunction: The Trigger Point Manual, Volume 1: Upper Half of Body (2nd ed). Baltimore, MD: Williams &amp; Wilkins.
  3. 3.0 3.1 3.2 3.3 http://www.anatomyexpert.com/structure_detail/5213/