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The inferior tibiofibular joint, also known as the distal tibiofibular joint (tibiofibular syndesmosis), is formed by the rough, convex surface of the medial side of the distal end of the fibula, and a rough concave surface on the lateral side of the tibia.
The most common type of fibula fracture is located at the distal end of the bone, and is classified as ankle fracture. In the Danis–Weber classification it has three categories: [ 5 ] Type A : Fracture of the lateral malleolus , distal to the syndesmosis (the connection between the distal ends of the tibia and fibula).
The lateral malleolus is the prominence on the outer side of the ankle, formed by the lower end of the fibula. The word malleolus (/ m ə ˈ l iː ə l ə s, m æ-/ [1] [2]), plural malleoli (/ m ə ˈ l iː ə ˌ l aɪ, m æ-/), comes from Latin and means "small hammer". (It is cognate with mallet.)
Patients generally do not report pain near the proximal fibula, so physical examination such as palpation along the fibula is effective for differentiating a Maisonneuve fracture from an isolated syndesmotic injury. [4] Feeling pain near the proximal fibula during palpation is a positive indication of a Maisonneuve fracture. [12]
Fracture of the fibula at the level of the syndesmosis. Typical features: at the level of the ankle joint, extending superiorly and laterally up the fibula; tibiofibular syndesmosis intact or only partially torn, but no widening of the distal tibiofibular articulation; medial malleolus may be fractured or deltoid ligament may be torn; variable ...
Bone tenderness along the distal 6 cm of the posterior edge of the tibia or tip of the medial malleolus, OR; Bone tenderness along the distal 6 cm of the posterior edge of the fibula or tip of the lateral malleolus, OR; An inability to bear weight both immediately and in the emergency department for four steps.
The bony architecture of the ankle consists of three bones: the tibia, the fibula, and the talus. The articular surface of the tibia may be referred to as the plafond (French for "ceiling"). [10] The medial malleolus is a bony process extending distally off the medial tibia. The distal-most aspect of the fibula is called the lateral malleolus ...
In 78% of cases, a fracture of the fibula is associated with a tibial fracture. [6] Since the fibula is smaller and weaker than the tibia, a force strong enough to fracture the tibia often fractures the fibula as well. Types include: Trimalleolar fracture - involving the lateral malleolus, medial malleolus and the distal posterior aspect of the ...