About: http://webisa.webdatacommons.org/251150810

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Alternatively, the angular adjustment mechanism can include an articulating joint, such as a ball joint, disposed within one of the superior and inferior endplate members.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com