Idiopathic bilateral medullary bone infarction of the femur and tibia in a young adult: A case report

Bone infarction, also known as osteonecrosis, is a rare condition that results from disruption of the bone’s blood supply. This disruption leads to ischemic necrosis of the bone marrow and the trabecular bone. We report a rare case of bilateral idiopathic medullary bone infarction in the distal femora and proximal tibiae of a 27-year-old male patient with a history of progressive lower limb pain and normal radiographs. Magnetic resonance imaging revealed characteristic serpiginous intramedullary lesions with signal change typical of bone infarction. Complete clinical recovery with significant radiological improvement was achieved through conservative management. This case highlights the importance of early magnetic resonance imaging in patients with chronic limb pain and demonstrates a rare idiopathic bilateral form without known predisposing factors.