How are you? Kienböck disease is a condition in which a one of the small bones of the hand near the wrist called the lunate dies.If the blood supply to a bone stops, the bone can die, a condition known as osteonecrosis. Kienböck's disease is osteonecrosis of the lunate. It usually affects the dominant wrist of men aged 20-40 years, but can effect women, but usually later than in men. The true natural history (what happens if we do not treat it) of this condition is not well understood.
Diagnosis is usually based on a suggestive history and physical exam, then xrays or MRI. In its early stages, Kienböck’s disease may be difficult to diagnose because the symptoms are so similar to those of a sprained wrist.
Treatment is by two methods conservative or medical management and surgical management.Because our best understanding of the disease is that it is related to loss of blood supply to the lunate, and because we know some patients can be cured if we can just avoid trauma and collapse, this is our first choice in the earlier stages, along with NSAID's and immobilization.
As you mentioned there is no negative ulnar variance proceedures like joint-leveling procedures, intercarpal fusions can be considered.
All the best.