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What happens to hyaline cartilage in osteoarthritis?
In osteoarthritis, hyaline cartilage undergoes degeneration and becomes progressively damaged due to mechanical stress and inflammation. This leads to the breakdown of the cartilage matrix, causing it to lose its elasticity and cushioning properties. As the cartilage erodes, it can result in increased friction between bones, leading to pain, stiffness, and reduced joint mobility. Over time, the underlying bone may also become affected, leading to further joint complications.
What causes anterior osteophyte formations?
Anterior osteophyte formations are typically caused by the wear and tear that occurs over time due to aging or degenerative conditions like osteoarthritis. They can also develop as a result of repeated stress or injury to the spine, leading to the body's attempt to stabilize the affected area by forming additional bone.
The main effect of applying mechanical stress to bones is?
main effect of mechanical stress
What is osteoarthritis of the lumbar spine?
Osteoarthritis of lumbar spine (low back) is a very common form of arthritis that is commonly called "wear and tear" arthritis since it is usually due to the kind of stressful things that happen to people as they go through life (falls, heavy and awkward lifting, prolonged standing, prolonged forward flexion, pregnancy, poor posture, etc.). Osteoarthritis can affect any joint in the body, but is especially common in the lumbar spine because so much mechanical stress is applied to this area of the spine during the course of the and by most activities. Another term for lumbar osteoarthritis is lumbar spondylosis.
What is the difference between mechanical stress and thermodynamic stress?
Mechanical stress is due to the resistance offered by various materials against physical distortion or damage. Thermal stress is caused due to the expansion of materials due to the variations in temperature with respect to reference value.
What is subarticular degenerate sclerosis?
Subarticular degenerate sclerosis refers to an increase in bone density and hardening that occurs beneath the cartilage surface of a joint, often associated with osteoarthritis. This condition arises due to the increased stress and mechanical load on the subarticular bone, leading to changes in the bone structure. It can result in pain and reduced joint function, contributing to the overall degeneration of the joint. Diagnosis typically involves imaging techniques such as X-rays or MRI.
What is the relationship between normal stress and shear stress in a material under mechanical loading?
Normal stress and shear stress are two types of stresses that act on a material under mechanical loading. Normal stress is a force applied perpendicular to the surface of the material, while shear stress is a force applied parallel to the surface. The relationship between normal stress and shear stress depends on the material's properties and the direction of the applied forces. In general, normal stress and shear stress can interact and affect each other, leading to complex mechanical behaviors in the material.
What is a stress fraction?
You might be thinking of a stress fracture; a fracture of a bone caused by repeated (rather than sudden) mechanical stress.
Abundant in tissues subjected to great mechanical stress?
Desmosomes
What is marginal osteophytosis?
Marginal osteophytosis refers to the formation of osteophytes, or bone spurs, at the margins of joints, often as a result of osteoarthritis or other degenerative joint conditions. These bony projections develop in response to joint stress and can lead to pain, reduced mobility, and joint stiffness. While they are typically a sign of joint degeneration, osteophytes can sometimes contribute to joint stability. Diagnosis usually involves imaging techniques like X-rays or MRI.
Performing better as a result of stress is an example?
everyday stress
How does the relationship between stress and strain affect the behavior of materials under mechanical loading?
The relationship between stress and strain determines how materials respond to mechanical forces. Stress is the force applied to a material, while strain is the resulting deformation. When a material is subjected to stress, it deforms or changes shape, which is known as strain. The behavior of materials under mechanical loading is influenced by how they respond to stress and strain. Materials can exhibit different properties such as elasticity, plasticity, and brittleness based on their stress-strain relationship.
