Final answer:
Avascular necrosis is a condition where bone tissue dies due to a lack of blood supply, leading to joint pain and reduced mobility. It is typically characterized by pain and stiffness in the hip, shoulder, and knee joints and can occur in anyone, although certain risk factors can increase the likelihood of developing the condition.
Step-by-step explanation:
Understanding Avascular Necrosis
Avascular necrosis is a condition characterized by the loss of blood supply to the bone, which leads to the death of bone tissue. The lack of blood causes the bone to break down, which can result in joint pain and limited range of motion. It most commonly occurs in individuals who have sustained an injury that affects the blood supply to the bone or individuals who use long-term steroid medications or excessive alcohol. The condition is often associated with pain and stiffness in the affected area, particularly in the hip, shoulder, and knee joints.
Option A accurately describes avascular necrosis with its symptoms and the demographic it commonly occurs in which can include the elderly, although it can also affect younger people depending on risk factors. Nonetheless, avascular necrosis is not age-specific and can potentially occur in anyone if the predisposing conditions are met. The other options refer to different conditions or represent a mixture of symptoms from different musculoskeletal disorders.
For those suffering from avascular necrosis, treatment may include conservative measures like medication and physical therapy, or surgical options ranging from bone grafts to joint replacement depending on the severity of the necrosis.