Assertion: ilizarov apparatus | /r/ObjectUse | used since 1940
Facets:
value: widely
type: DEGREE
value: for limb lengthening
type: PURPOSE
Source sentences:
text: The Ilizarov apparatus has been widely used since the 1940s for limb lengthening, filling in boney defects, treatment of nonunions (1-5) as well as osteomyelitis.