Stress shielding is 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,[2] bone in a healthy person or animal remodels in response to the loads it is placed under. It is possible to mention the elastic modulus of magnesium (41–45 GPa) compared to titanium (110–127 GPa), stainless steel (189–205 GPa), iron (211.4 GPa), or zinc (78–121 GPa), which makes it further analogous to the natural bone of the body (3–20 GPa) and prevents stress shielding phenomena.[3][4] Porous implantation is one typical alleviation method.[5][6]
^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.
^Frost, HM (1994). "Wolff's Law and bone's structural adaptations to mechanical usage: an overview for clinicians". The Angle Orthodontist. 64 (3): 175–188. PMID 8060014.
^Kong, Lingyun; Heydari, Zahra; Lami, Ghadeer Hazim; Saberi, Abbas; Baltatu, Madalina Simona; Vizureanu, Petrica (3 July 2023). "A Comprehensive Review of the Current Research Status of Biodegradable Zinc Alloys and Composites for Biomedical Applications". Materials. 16 (13): 4797. Bibcode:2023Mate...16.4797K. doi:10.3390/ma16134797. PMC 10343804. PMID 37445111.
^Saberi, A.; Bakhsheshi-Rad, H.R.; Karamian, E.; Kasiri-Asgarani, M.; Ghomi, H. (April 2020). "Magnesium-graphene nano-platelet composites: Corrosion behavior, mechanical and biological properties". Journal of Alloys and Compounds. 821: 153379. doi:10.1016/j.jallcom.2019.153379. S2CID 214172320.
^US patent 5702449, William F. McKay, "Reinforced porous spinal implants", published 1997-12-30, issued 1997-12-30, assigned to Danek Medical, Inc., Memphis, Tenn. and SDGI Holdings Inc.
Stressshielding is the reduction in bone density (osteopenia) as a result of removal of typical stress from the bone by an implant (for instance, the...
to inhomogeneity of interfaces on the free end or stressshielding. In the case of stressshielding, inhomogeneity in the materials can lead to different...
extracellular matrix senses elevated mechanical stress loading, tissue will scar, and scars can be limited by stressshielding wounds. Small full thickness wounds...
A shielded cable or screened cable is an electrical cable that has a common conductive layer around its conductors for electromagnetic shielding. This...
and implant, leading to a lower incidence of bone degradation due to stressshielding and periprosthetic bone fractures, which occur at the boundaries of...
scaffold with lower stiffness for hip replacement implants to avoid stressshielding. Because tantalum is a non-ferrous, non-magnetic metal, these implants...
motion of sediment in a fluid flow. It is a nondimensionalization of a shear stress, and is typically denoted τ ∗ {\displaystyle \tau _{\ast }} or θ {\displaystyle...
allows a normal ROM (range of movement) and minimizes the amount of "stressshielding", compared with THR. Since the femoral neck is retained and the femoral...
with metal. These implants must be designed and installed with care. Stressshielding occurs when plates or screws carry too large of a portion of the bone's...
In contrast to shielded or foiled twisted pair (typically S/FTP or F/UTP cable shielding), UTP cable is not surrounded by any shielding. UTP is the primary...
between the implant and the bone can result in stress-shielding effects from a disproportional handling of stress. The implant which typically exhibits a higher...
the shielding gas evenly into the welding zone. Inconsistent flow may not adequately protect the weld area. Larger nozzles provide greater shielding gas...
upon cartilage and generate the swelling pressure responsible for stressshielding the matrix from compression loading. They attach themselves to up to...
strong bone and the cartilage and tissue. Otherwise problems such as stressshielding can occur where the bone degenerates due to the implant having too...
potential fractures. The processes involved include them creating ‘‘stressshielding’’ by increasing the compliance of enamel next to the dentin. Decussation...
near-bone elastic modulus, which provides stressshielding and allows uniform distribution of tissue stress Currently, most research on Mg is focused...
effectiveness of a shielding material in general increases with its atomic number, called Z, except for neutron shielding, which is more readily shielded by the likes...
constructing shielding for a specific purpose. For example, although high atomic number materials are very effective in shielding photons, using them to shield beta...
effective shielding materials are water, or hydrocarbons like polyethylene or paraffin wax. Water-extended polyester (WEP) is effective as a shielding wall...
identified as some of the major problems associated with implant loosening, stress-shielding and ultimate implant failure. Although wear is commonly reported in...
the shear stress. So the shear stress velocity can never be measured with a velocity meter. By using the shear stress velocity, the Shields parameter...
High-Voltage Cable Termination," which must meet these requirements: Electrical stress control Insulation between the conductors and ground An environmental seal...
intramolecular forces as outlined above, salts can have chaotropic properties by shielding charges and preventing the stabilization of salt bridges. Hydrogen bonding...
become "by far the most prominent type of shield in contemporary discourse". They say that the proximate shielding accusation has been used by States to cover-up...
engineering and regeneration, fat grafting, distraction osteogenesis, stressshielding, and 3-dimensional analysis and planning. He uses a 'surgery-first'...
or shear stress on the part of local topography can morph a pāhoehoe flow into an ʻaʻā one, but the reverse never occurs. Although most shield volcanoes...
sugars. As a stress response, A. haemorrhoidale can produce an orange secretion from gland openings in the thorax. The hawthorn shield bug is found across...
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