Which condition is characterized by weakened and porous bones, increasing the risk of fractures?

Osteoporosis is a condition characterized by weakened and porous bones, leading to an increased risk of fractures, especially in the hip, spine, and wrist.

a. Arthritis: Arthritis is a condition that involves joint inflammation and may cause joint pain and stiffness but does not directly weaken bones.
b. Osteoarthritis: Osteoarthritis is a degenerative joint disease that affects the cartilage and joints, but it does not specifically increase the risk of fractures.
c. Osteomyelitis: Osteomyelitis is a bone infection that can lead to bone destruction and inflammation but does not directly weaken bones to the same extent as osteoporosis.

An open fracture, also known as a compound fracture, occurs when the bone breaks and penetrates the skin, exposing the fracture site to the external environment. It carries an increased risk of infection and requires immediate medical attention.

a. Closed fracture: A closed fracture is a type of fracture where the bone breaks but does not penetrate the skin, keeping the fracture site enclosed.
b. Greenstick fracture: A greenstick fracture is an incomplete fracture seen in children, where the bone bends and partially breaks on one side but remains intact on the other side.
d. Stress fracture: A stress fracture is a small crack or incomplete break in the bone, often caused by repetitive stress and overuse.