EC Orthopaedics

Müller-Weiss syndrome is a rare adult osteonecrosis of the tarsal navicular and an uncommon cause of chronic midfoot pain. We report a 39-year-old patient with progressive mechanical midfoot pain without prior trauma. Weight-bearing radiographs and com- puted tomography showed lateral navicular collapse, fragmentation, sclerosis, and articular surface disorganization, consistent with Müller-Weiss syndrome. Imaging was essential for diagnosis and exclusion of differential conditions. Early recognition is important to guide management and prevent progressive deformity and secondary osteoarthritis.

 Keywords: Müller-Weiss Syndrome; Osteonecrosis; Tarsal Navicular; Osteoarthritis

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