2 THE POCKET ANATOMY 



articular processes which are diarthroses of the arthrodial 

 variety. 



(A) The Ligaments of the Bodies. 



The anterior common ligament : a broad band of fibres, 

 extending along front of bodies of vertebras, from axis to 

 sacrum. It consists of two sets of fibres, superficial and deep ; 

 the former extending between the bodies of two or more 

 vertebras, the latter only between adjacent vertebras. The 

 fibres are attached principally to the intervertebral sub- 

 stances. 



The posterior common ligament is within the spinal canal, 

 and extends along back of bodies of the vertebras from axis to 

 sacrum, being broad opposite the intervertebral discs, and 

 narrow opposite the bodies, except in the neck, where it is as 

 wide as the bodies. It is attached to the discs and contiguous 

 parts of the bodies of the vertebrae. 



The intervertebral substances, found between the vertebrae 

 from axis to sacrum. The circumference of each consists of 

 layers of oblique parallel fibres of white fibrous tissue, en- 

 closing a central part of pulpy elastic material. They are 

 thickest in the lumbar region, and they give the peculiar 

 curves to the column by their differences in thickness. 



(B) The Ligaments of the Lamina. 



The ligamenta subflava connect the laminae of the vertebrae 

 from the axis to the sacrum. Each ligament is attached to 

 the anterior inferior edge of the lamina above, and to thf 

 posterior superior edge of the lamina below. 



The Ligaments of the Articular Processes. 



Capsular ligaments surround the articular processes, those 

 in the cervical region being the loosest. Each is lined by a 

 synovial membrane. 



The Ligaments of the Spinous Processes. 



The interspinous ligaments extend in all regions of the 

 vertebral column between the spinous processes of the ver- 

 tebras, running from root to apex. 



The supraspinous ligament: a fibrous cord, joining the 

 tips of the vertebrae, and extending from the seventh cervical 

 to the first sacral. 



The ligamentum nuchse continues the supraspinous liga- 

 ment upwards. It consists of a superficial layer, extending 

 from the spine of the seventh cervical to the external occipital 

 protuberance, and a deep layer attached to the spines of the 

 cervical vertebrae and the occipital crest. 



The Ligaments of the Transverse Processes. 



Intertransverse ligaments extend between the transverse 



