Specific Bioabsorbable Polymers ?
There are three main types of bioabsorbable polymers used in orthopaedics:PGA: although highly crystalline, PGA absorbs very quickly into the body, losing virtually all strength within 1 month and all mass within about 6 to 12 months. During this phase of rapid absorption, large quantities of a glycolic acid monomer are released, potentially causing clinical complications within a few months following implantation.PLLA: Poly (L) Lactic Acid has a much slower rate of absorption than PGA. The L (Levo) version of this polymer is highly crystalline due to the ordered pattern of the monomers, (i.e. L-L-L-L-L- L-L) and has been documented to take as much as 5-7 years to absorb.PDLA: the D (Dexo) Isomeric form of PLA, has a much faster absorption rate.
