Triplane fracture associated with a proximal third fibula fracture.

The case of a Maisonneuve fracture occurring in association with a triplane fracture in an adolescent wrestler is presented. In this combination of injuries, the deltoid ligament may be ruptured, and/or the medial malleolus fractured. If the proximal fibula fracture is not discovered, and the syndesmosis rupture is not treated, the resulting chronic talocrural instability may lead to chronic ankle pain and degenerative arthritis. The orthopedist should be aware of the possibility of a Maisonneuve fracture occurring in association with a triplane fracture, and should treat both injuries appropriately.