Stress shielding

Stress shielding refers to the reduction in bone density (osteopenia) as a result of removal of typical stress from the bone by an implant (for instance, the femoral component of a hip prosthesis).[1] This is because by Wolff's law, bone in a healthy person or animal will remodel in response to the loads it is placed under. Therefore, if the loading on a bone decreases, the bone will become less dense and weaker because there is no stimulus for continued remodeling that is required to maintain bone mass.

References

Ibrahim, H.; Esfahani, S. N.; Poorganji, B.; Dean, D.; Elahinia, M. (January 2017). "Resorbable bone fixation alloys, forming, and post-fabrication treatments". Materials Science and Engineering: C. 70 (1): 870–888. doi:10.1016/j.msec.2016.09.069. PMID 27770965.

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[1] Ibrahim, H.; Esfahani, S. N.; Poorganji, B.; Dean, D.; Elahinia, M. (January 2017). "Resorbable bone fixation alloys, forming, and post-fabrication treatments". Materials Science and Engineering: C. 70 (1): 870–888. doi:10.1016/j.msec.2016.09.069. PMID 27770965.