About: http://webisa.webdatacommons.org/191784260

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	Preferably the spring is a compression spring such as a coiled helical spring which surrounds the bone anchor and which retracts when pressure is applied.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es