The exact cause of hip arthritis is not fully understood, but several factors increase the likelihood of developing it. Age is the most significant - the cartilage in all joints gradually thins over time, which is why it is most common in adults over 50.
Other contributing factors include previous hip injury or fracture, being overweight (which increases load on the joint), genetics, and repetitive occupational strain. In some patients, structural problems with the hip present from birth, such as hip dysplasia, can accelerate cartilage damage.
Osteoarthritis (wear and tear) is by far the most common type. Less common forms include rheumatoid arthritis and post-traumatic arthritis following injury.
Osteoarthritis
The most common type. Gradual deterioration of the cartilage over a long period of time, it affects the majority of patients Mr Oni sees.
Post-traumatic arthritis
Not as common. Arthritis that develops following a hip fracture, dislocation or previous surgery, this can occur at any age.
Inflammatory arthritis
Less common. Inflammatory conditions such as rheumatoid arthritis can affect the hip at a younger age and progress differently.