Discogenic Pain Wheeless

Description: Wheeless' Textbook of Orthopaedics
when the innervated ligamentous layer of the outer annulus fibrosis is stretched because of segmental instability, pain results; - acute sprain probably represents partial tearing of annular tissue; - if annular tissue becomes weakened to the point of allowing nucleus to protrude beyond the normal confines of the annulus, it may actually be a prelude to subsequent episodes of frank disc herniation;