Iliacus hematoma should be suspected as the cause of femoral neuropathy in cases of minor trauma in teenagers, especially when the onset of paralysis is delayed and therefore an acute traction injury of the nerve is unlikely. In our 14-year-old female patient the condition followed minor trauma. In such cases CT scan should be performed. When this reveals a hematoma and the nerve lesion is rapidly progressing or complete, the hematoma should be promptly evacuated.