id	keyword
fis-120	implant
fis-120	fatigue
fis-120	stress
fis-120	tests
fis-120	type
fis-120	screw
fis-120	fracture
fis-120	surface
fis-120	frattura
fis-120	failure
fis-120	titanium
fis-120	loading
fis-120	figure