Elastic Modulus Highly Compatible with Bone (Stress Shielding Effect)

This is the most fundamental physiological advantage of Biodegradable plastic .

Metal Bone Screws: The elastic modulus is much higher than that of human bone. This can lead to stress shielding, where the metal bears most of the load, causing surrounding bone loss due to insufficient mechanical stimulation.

**Biodegradable plastic Bone Screws: **Their elastic modulus is very close to that of human cortical bone.

Advantages: They can evenly transfer stress to the surrounding bone tissue, promoting bone growth and healing while reducing the risk of postoperative bone loss.