AVN, or avascular necrosis, is a condition in which the blood supply to certain bones is disrupted, leading to their death and eventual collapse. AVN typically develops slowly over time, with the average timeline for the onset of symptoms and diagnosis ranging from several months to several years.
The exact timeline for AVN development depends on a number of factors, including the severity of the underlying cause of the condition, the overall health of the individual, and the person's response to treatment. In general, though, AVN can progress in stages.
In the early stages of AVN, the individual may experience occasional pain and stiffness in the affected joints. Over time, the symptoms may worsen, and the joints may become increasingly stiff and painful. In some cases, the individual may also experience swelling and a decrease in range of motion.
As the condition progresses, the affected bones may start to weaken and eventually collapse. This can lead to deformity and disability, as well as difficulty with activities of daily living. It usually takes several months or years for the bones to completely collapse, depending on the severity of the condition and the individual's response to treatment.
It is important to seek medical attention as soon as possible if you experience any symptoms associated with AVN, as early diagnosis and treatment can prevent further damage and improve the long-term outcome.