Compliant osteosynthesis fixation plate

A polymer tissue fixation device for implantation into a living body, said polymer fixation device comprising a laminar body having a first layer, a second layer and an interface, said first layer comprising a porous form of a first polymer material, said second layer comprising a porous form of a second polymer material, wherein said first layer has a different porosity than said second layer;

• said first and second polymer materials comprising biopolymers, said first layer transitioning to the second layer at said interface, wherein at least at room temperature and within a period of time that is from prior to said implantation up through said implantation, said laminar body intrinsically is capable of being smoothly bent by a bending force that irreversibly collapses a portion of the pores of the porous form to prevent cracking or breaking of the non-porous form, and wherein said laminar body intrinsically maintains said bent condition following removal of the bending force.

A polymer tissue fixation device for implantation into a living body, said polymer fixation device comprising a laminar body having a first surface, a second surface and a porosity gradient extending therebetween, said first and second surfaces and said porosity gradient all comprising a biopolymer material, wherein said first surface has a greater porosity than said second surface;

• said first surface transitioning to the lower porosity second surface through said porosity gradient, wherein at least at room temperature and within a period of time that is from prior to said implantation up through said implantation, said laminar body possesses the following properties:
• being capable of being smoothly bent upon application of a bending force, the bending force permanently collapsing a portion of the pores of the higher porosity first surface to prevent cracking or breaking of the lower porosity second surface, and said laminar body maintaining said bent condition following removal of the bending force.