Viz Medical on Instagram: "Kienböck’s disease is a condition where the lunate—a small bone in the wrist—loses its blood supply and slowly breaks down. It often starts with wrist pain, swelling, or stiffness. Doctors don’t know the exact cause, but wrist shape, past injuries, or blood-flow issues may play a role. Without enough blood, the bone weakens, collapses, and deteriorates over time. Curious about more unusual medical conditions? 👉 Join Viz Medical for early access + custom emojis: https: