4 THE POCKET ANATOMY 



The posterior occipito-atloid ligament, thin and mem- 

 branous, is attached above to posterior margin of foramen 

 magnum ; below, to upper border of posterior arch of atlas. 

 (Perforated on each side by vertebral artery and subocdpital or first 

 cervical nerve. ) 



The lateral occipito-atloid ligaments : one on each side ; 

 attached above to the jugular process of occiput, and below 

 to the base of atlantal transverse process. 



Capsular ligaments as in ordinary vertebrae. 



IV. LIGAMENTS BETWEEN THE AXIS AND OCCIPITAL BONE. 



The occipito-axoid ligament (apparatus ligamentosus colli) : a 

 continuation of the posterior common ligament, connected 

 above with basilar groove of occiput, and below to posterior 

 surface of the body of axis. 



The odontoid or check ligaments consist of two cords 

 passing from the sides of the apex of the odontoid process to 

 the rough surface on the inner side of each condyle of the 

 occipital bone. In the interval between the two the ligamen- 

 tum suspensorium dentis passes from the apex of the odontoid 

 process to the anterior margin of the foramen magnum. 



V. TEMPORO-M AXILLARY ARTICULATION. 



The condyle of the lower jaw articulates with the anterior 

 part of the glenoid fossa, and with the eminentia articularis 

 of the temporal bone, the joint being divided into an upper 

 and a lower synovial cavity by an interarticular fibro-cartilage. 



The external lateral ligament, attached above to tubercle 

 and lower border of zygoma ; below, to outer surface and 

 posterior edge of neck of lower jaw. 



The internal lateral ligament is attached above to the 

 spinous process of the sphenoid, and below to the inner 

 margin or lingula of the dental foramen of lower jaw. 



The capsular ligament : thin and loose, attached above to the 

 edge of anterior half of glenoid cavity and articular eminence ; 

 below, it surrounds neck of the condyle. 



The interarticular fibro-cartilage has an oval shape ; the 

 upper surface is concavo-convex from before backwards, and 

 slightly convex transversely ; the lower surface is concave ; 

 the edge 4 is attached to the capsule, and part of the external 

 pterygoid muscle is inserted into its anterior margin. 



Synovial membranes, two in number, one above and one 

 below the fibro-cartilage ; the upper being the larger. 



The stylo-maxillary ligament: a band of fibrous tissue 



