[Pit falls in the emergency walk-in clinic: lower limb (2)].

The lower limb is the seat of many traumatic lesions especially the foot and ankle. To misdiagnose these injuries leads to pain, instability, early arthritis and poor results. Clinical examination is very important and also standard X rays. New imaging techniques such as MRI will help to delineate some difficult to see lesions such as Lisfranc's fracture-dislocations, osteochondral lesions or occult hip fractures.