POLYETHYLENE WEAR PARTICLES H McKellop, 1994 Hip Society The number of particles generated by a hip prosthesis 7x 10 particles/yr 700,000 particles/stepPOLYETHYLENE WEAR POLYETHYLENE WEAR PARTICLES PARTICLES H. McKellop McKellop, 1994 Hip Society , 1994 Hip Society The number of particles generated by a hip The number of particles generated by a hip prosthesis prosthesis 7 x 1011 particles/yr. particles/yr. 700,000 particles/step 700,000 particles/step