Summary of video:
Do You Need Total Hip Replacement Surgery? Hip replacements are done because the ball and socket, the hip joint is wearing out. Usually, it's from osteoarthritis, which is a degenerative joint disease - common in older adults.
Some people have rheumatoid arthritis which is an autoimmune hyperinflammation disease which causes a different breakdown in the joint.
There is also dead bone - avascular necrosis or osteonecrosis.
Some people are born with odd-shaped hips - elongated hips called a cam lesion or a panser lesion. If hips are misshapen from birth that can lead to arthritis.
Also fractures. People who experience a big car accident may have joint damage that might not heal right and may need a hip replacement eventually.
The bottom line is the ball and socket is degrading - losing cartilage. It is no longer smooth, it's rough and it hurts a lot.