The inferior oblique fibres connect the upper thoracic vertebral bodies to the lower cervical transverse processes, producing lower cervical rotation-extension.
| Origin | Bodies of T1-T3 vertebrae |
|---|---|
| Insertion | Anterior tubercles of C5-C6 transverse processes |
| Nerve Supply | Ventral rami of C5-C6 |
| Blood Supply | Vertebral artery branches |
| Actions | Extends and rotates the lower cervical spine to the ipsilateral side |
|---|
The inferior oblique fibres mark the cervicothoracic junction in anterior cervical approaches — their attachment to T1-T3 bodies is the inferior limit of the standard anterior cervical dissection.
Not palpable externally.
Disruption of inferior oblique longus colli fibres during low anterior cervical approach producing cervicothoracic junction instability.
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