This is the inflammation of the bursa (fluid filled sac) that lies between the prominence of the the femur (the greater trochanter) and the overlying muscles. It usually occurs due to excessive friction on the bursa, and can be down to tight gluteal muscles, a tight iliotibial band, or poor biomechanics as well as simple over use. It can be very difficult to distinguish this condition from gluteus medius tendonitis.
It causes pain on the outside of the hip which may radiate down the outside of the thigh. The area is often tender to touch and to lie on at night. It is made worse by running sports, stair climbing and crossing the legs.
If you think you have this condition it is well worth getting it checked out by Mr Willis-Owen. You should avoid any aggravating activities with may prolong the problem. It generally will not get better on its own without identifying the cause and treating it.
Treatment involves first confirming the diagnosis which may involve ultrasound scans, then establishing the underlying cause. Options may include activity modification, physiotherapy, orthotics and anti inflammatories. This condition responds well to shockwave therapy. Rarely an injection or surgical treatment is needed.
Mr Willis-Owen has suffered from this condition when marathon running and successfully treated it with activity modification, changes to footwear and some very specific physiotherapy exercises.