Which term describes avascular necrosis of the navicular bone in an adult?

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Multiple Choice

Which term describes avascular necrosis of the navicular bone in an adult?

Mueller-Weiss syndrome describes idiopathic avascular necrosis of the navicular bone in adults. When the navicular loses its blood supply, it can soften and collapse, leading to flattening of the medial longitudinal arch and degenerative changes at the talonavicular joint. Patients often have chronic midfoot pain that worsens with weight bearing and activity, sometimes with a noticeable arch collapse. On imaging, the navicular may appear sclerotic and fragmented and later depressed or collapsed, with secondary arthritis of the talonavicular joint and altered alignment of the midfoot. This distinguishes it from Kohler disease, which occurs in children, Preiser's disease, which is avascular necrosis of the scaphoid in the wrist, and Diaz disease, which is not the standard term used for adult navicular AVN.

Mueller-Weiss syndrome describes idiopathic avascular necrosis of the navicular bone in adults. When the navicular loses its blood supply, it can soften and collapse, leading to flattening of the medial longitudinal arch and degenerative changes at the talonavicular joint. Patients often have chronic midfoot pain that worsens with weight bearing and activity, sometimes with a noticeable arch collapse. On imaging, the navicular may appear sclerotic and fragmented and later depressed or collapsed, with secondary arthritis of the talonavicular joint and altered alignment of the midfoot. This distinguishes it from Kohler disease, which occurs in children, Preiser's disease, which is avascular necrosis of the scaphoid in the wrist, and Diaz disease, which is not the standard term used for adult navicular AVN.

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