SURGICAL SCREWS

Question 1

device used for converting rotational force into linear motion

Answer 1

screw

Question 2

the linear motion we are looking for is how many degrees relative to the fracture line?

with lag tech. we get?

Answer 2

90 degrees

compression

Question 3

T/F, can we use screws to fixate plates to bones?

Answer 3

T

Question 4

why is Cr or Ti added?

Answer 4

corrosion resistance

Question 5

whats in stainless steel?

Answer 5

Cr, Ni, Mo, Mg, P,S, Si

Question 6

not as elastic, doesn’t resist plastic deformation?

Answer 6

titanium

Question 7

this is protective layer of oxide on metal surface?

mech erosion is called?

Answer 7

passivization, avoid scratching the surface

fretting