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Living with Morbus Kienboeck

A wrist condition in which one small bone slowly breaks down from poor blood supply, causing pain and weak grip.

Understanding Morbus Kienboeck

Morbus Kienboeck, or Kienbock's disease, is a wrist condition in which the lunate bone slowly breaks down because of low blood supply.

This process is called osteonecrosis. Symptoms include pain, swelling, limited movement, and decreased grip strength. Symptoms usually start in adulthood but can occur at any age. Diagnosis is made by imaging studies.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Wrist pain
  • Swelling
  • Limited joint movement
  • Decreased grip strength
  • Bone death from low blood supply (avascular necrosis)
  • Arthritis in the wrist

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include autoimmune and inflammatory disease specialists and bone and joint specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Bone and joint specialists (orthopedists or orthopedic surgeons)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which imaging tests will show the stage of the condition?
What treatment options are available, including surgery?
How can I protect my wrist in daily activities?

Quick facts

Symptoms usually startAdult

GARD says the underlying cause of Kienbock's disease is unknown.

Also known as: aseptic necrosis of the lunate bone; bilateral kienbock's disease; keinbock disease; keinbock's disease; kienbock disease; kienboeck's disease

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Morbus KienboeckGARD ID 9690 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Morbus Kienboeck.

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