Multimodal Imaging in the Comprehensive Evaluation of Kohler Disease: A Case Report and Literature Review

Osteonecrosis of the tarsal navicular bone is a rare disorder of the foot and ankle that is often overlooked or misdiagnosed. When it occurs in children, the condition is known as Kohler disease. This article presents the case of a 9-year-old boy who experienced left foot pain, swelling, and a limp. Multimodal imaging revealed alterations in the morphology of the navicular bone, uneven bone density, and bone marrow edema, leading to a definitive diagnosis of Kohler disease. Due to its rarity, diagnosis requires careful correlation of clinical symptoms and imaging findings. Most affected children achieve full recovery through conservative management, including immobilization and restriction of weight-bearing. Early recognition is crucial to avoid unnecessary interventions.