Kienbock's disease causes one of the bones in the wrist (lunate bone) to slowly break down due to low blood supply. This process is called osteonecrosis. Symptoms include pain, swelling, limited movement, and decreased grip strength. The symptoms usually start in adulthood, but can occur at any age. Kienbock's disease usually slowly gets worse over time. The underlying cause of Kienbock's disease is unknown. Diagnosis is made by imaging studies such as an MRI or CT scan. Treatment aims to relieve pressure and restore blood flow within the bone, and includes both surgical and non-surgical methods.

The following list includes the most common signs and symptoms in people with Kienbock's disease. These features may be different from person to person. Some people may have more symptoms than others and symptoms can range from mild to severe. This list does not include every symptom or feature that has been described in this condition.

Symptoms may include:

• Wrist pain
• Limitation of movement
• Loss of grip strength
• Joint swelling

It is not well understood how Kienbock's disease changes over time. Most people start to develop symptoms in early adulthood. Typically, only one wrist is affected. Over time, the wrist joint may break down leading to arthritis in the surrounding bones. Some people with Kienbock's disease have no symptoms and the condition is only discovered by chance.

There are several nonsurgical and surgical options for treating Kienbock's disease. Nonsurgical options include keeping the wrist from moving and medications. Surgical options include restoring blood flow to the wrist and evening out the length of arm bones. The goals of treatment are to reduce pain, improve wrist movement, and stop the disease from getting worse.

Specialists involved in the care of someone with Kienbock's disease include:

• Orthopedist
• Hand surgeon
• Physical therapist