orthopedic implant	a device that has been put into the body in a medical operation that helps to move
to restore	to return something to an earlier good condition
to withstand	to be strong enough
a fracture	a break
to accumulate	to get more and more of something over a period of time
a device	a contraption
stress shielding	the reduction in bone density
tissue	a group of connected cells
artificial	not real
friction	the fact that one thing rubs against another
inflammation	an area of your body that is swollen, red and painful
a byproduct	something that is made as a result of producing another product
irritation	a painful feeling in a part of the body, often with red skin
bioabsorbable materials	designed to be absorbed by the body
to wear out	to make something ruin
a girdle	a piece of underwear worn around the waist
to bend	to fold
a screw	a thin, pointed and threaded piece of metal used to join things together
a rod	a bar
a pin	a thin piece of metal
a suture	a stitching