[Acute limping in children between 1 and 4 years old].

Recent limping in children aged between 1 and 4 years old are often a diagnostic problem because the young child may not be able to show the area of pain. Dominated by the traumatic causes like hairline fracture, the physician should eliminate the most severe, including infectious etiologies that require urgent treatment. The clinical examination is fundamental and simple complementary investigations like standard X-rays and biology (blood count cell, C reactive protein) looking for increased inflammatory parameters will help to find the cause in the majority of cases. The persistence of a limp beyond a week involves the realization of bone scan or MRI imaging.