The Biocompatibility of Degradable Magnesium Interference Screws: An Experimental Study with Sheep

Figure 4

Degradation of Mg implants. The amount of corrosion product (cp) was not significantly different between the (A)–(G) 6- and (H)–(L) 12-week (w) and (M)–(P) 1-year (y) follow-up times. Implants (Imp) were surrounded by bone (b), granulation tissue, gas voids (gb), and macrophages (m). ((L), (N)) Multinucleated macrophages were also located at the Mg corrosion product. (I) Hardly any residue was found from the calcium phosphate coating (c). Square: detail shown in higher magnification in the subsequent picture.