Bone is strongest in resisting compressive stress and weakest in
resisting shear stress
(Figure 4-2).
What type of stress is the bone weakest?
– Stress-Strain character dependent upon rate of applied strain (time dependent). Bone is anisotropic – its modulus is dependent upon the direction of loading. Bone is weakest
in shear, then tension, then compression
. Bone is viscoelastic: its force-deformation characteristics are dependent upon the rate of loading.
What type of stress is bone strongest in resisting?
Bones are stronger in
resisting compression
than in resisting tension and shear forces because when the forces in compression are going with the grain it is building its strength. With compression it allows the force to be absorbed.
Is bone stronger in compression or tension?
Cortical bone is
stronger and stiffer in compression than tension
; under longitudinal loads than transverse or shear loads; and under higher strain rates than lower strain rates[95,101,104,114,198,203-205].
What type of bone withstands stress?
The
osteon
is the functional unit of compact bone. In order to withstand stress, the osteon is formed by the osteocytes to be tiny weight-bearing pillars.
What type of stress is bone strongest in resisting why what type of stress is bone weakest in resisting Why?
Both cortical and trabecular bone are anisotropic; that is, they exhibit different strength and stiffness in response to forces applied from different directions. Bone is strongest in resisting compressive stress and weakest in
resisting shear stress
(Figure 4-2).
Is bone stronger than steel?
You might ask: Is bone stronger than steel? … Bone typically has an elastic modulus that is like concrete but it’s
10 times stronger in compression
. As for the stainless-steel comparison, bone has a similar compressive strength but is three times lighter.
What loading direction is bone the strongest in quizlet?
Bones are strongest in
compression
and weakest in shear.
Which component of bone is primarily responsible for its compressive strength?
The
incorporation of hydroxyapatite within the collagen fibers
contributes to the overall compressive strength of bone. Within the bone matrix, the minerals, water, collagens, and proteoglycans function together to provide strength in tension and compression.
Which stress is caused by a pull on the body acted upon?
Stress is generally defined as force per unit area. When forces pull on an object and cause its elongation, like the stretching of an elastic band, we call such stress a
tensile stress
. When forces cause a compression of an object, we call it a compressive stress.
Is tension stronger than compression?
A tension force is one that pulls materials apart. A compression force is one that squeezes material together. Some materials are better able to withstand compression, some are better able to resist tension, and others are good to use when both compression and tension are present.
What is tension side of bone?
3-2a–e When applied to the tension side of the bone, a
plate acts
as a dynamic tension band. a The mechanical axis of the bone is not necessarily within the center of the bone. b Under axial load the curved femur creates a tension force laterally and a compression force medially.
Do Osteons absorb stress in all directions equally?
The osteon absorbs stress in
all directions equally
. The more osteons in a bone, the stronger the bone is. Strength of the osteon comes from the inorganic salts secreted into the bone matrix. … The collagen in the osteoid bone matrix makes the overall bone matrix stronger by allowing flexibility.
What type of bone growth does a 40 year old male experience?
What type of bone growth do you think a 40-year-old male experiences?
zone of proliferation
.
What is the type of bone growth called when the bones get thicker?
Even though bones stop growing in length in early adulthood, they can continue to increase in thickness or diameter throughout life in response to stress from increased muscle activity or to weight. The increase in diameter is called
appositional growth
.
Can spongy bone withstand stress?
Trabeculae in spongy bone are arranged such that one side of the
bone bears tension
and the other withstands compression. Spongy bone reduces the density of bone and allows the ends of long bones to compress as the result of stresses applied to the bone.
