1/4/2024 0 Comments Bimalleolar fracture treatment![]() ![]() The lateral malleolus indicates the lower end of the fibula. These fractures are often unstable and require surgical intervention unless there are other health complications in the individual that make surgery inadvisable.īimalleolar Fractures that occur in the lateral and medial malleoli and are called true bimalleolar fractures. Bimalleolar Fracture Classificationīased on the Weber classification, bimalleolar fractures that occur at the level of the syndesmosis are classified as Type B fractures. A fracture of the lateral malleolus above the syndesmosis joint constitutes a Type C Weber fracture, while below the syndesmosis joint it constitutes a Type A Weber fracture. The lower end of the tibia projects on the inner side of the ankle to form a prominence called the medial malleolus, while the lower end of the fibula projects outwards at the ankle to form the lateral malleolus.( 5 ✔ ✔Trusted SourceĪccording to the Weber classification, fracture of the lateral malleolus at the syndesmosis joint constitutes a Type B Weber fracture. The lower ends of the tibia and the fibula are connected with ligaments and form a syndesmosis joint. The summit is rounded and gives attachment to the calcaneofibular ligament.Ī major structure that is located between the lateral malleolus and the Achilles tendon is the sural nerve.The ankle consists of the lower ends of the tibia and fibula, the bones of the leg, and the talus, a bone of the foot.The posterior border is broad and presents the shallow malleolar sulcus, for the passage of the tendons of the Peronæi longus and brevis.The anterior border is thick and rough and marked below by a depression for the attachment of the anterior talofibular ligament.The lateral surface is convex, subcutaneous, and continuous with the triangular, subcutaneous surface on the lateral side of the body.Behind and beneath the articular surface is a rough depression, which gives attachment to the posterior talofibular ligament. The medial surface presents in front a smooth triangular surface, convex from above downward, which articulates with a corresponding surface on the lateral side of the talus.The lateral malleolus is found at the foot end of the fibula, of a pyramidal form, and somewhat flattened from side to side it descends to a lower level than the medial malleolus. Structures that pass behind medial malleolus deep to the flexor retinaculum: The major structure that passes anterior to the medial malleolus is the saphenous vein. The summit of the medial malleolus is marked by a rough depression behind, for the attachment of the deltoid ligament.The posterior border presents a broad groove, the malleolar sulcus, directed obliquely downward and medially, and occasionally double this sulcus lodges the tendons of the Tibialis posterior and Flexor digitorum longus.The anterior border is rough, for the attachment of the anterior fibers of the deltoid ligament of the ankle-joint.The lateral or articular surface is smooth and slightly concave, and articulates with the talus.The medial surface of this process is convex and subcutaneous.The medial surface of the lower extremity of tibia is prolonged downward to form a strong pyramidal process, flattened from without inward - the medial malleolus. The medial malleolus is found at the foot end of the tibia. ![]() The word malleolus ( / m ə ˈ l iː ə l ə s, m æ-/ ), plural malleoli ( / m ə ˈ l iː ə ˌ l aɪ, m æ-/), comes from Latin and means "small hammer". The lateral malleolus is the prominence on the outer side of the ankle, formed by the lower end of the fibula. The medial malleolus is the prominence on the inner side of the ankle, formed by the lower end of the tibia. Look up malleolus in Wiktionary, the free dictionary.Ī malleolus is the bony prominence on each side of the human ankle.Įach leg is supported by two bones, the tibia on the inner side (medial) of the leg and the fibula on the outer side (lateral) of the leg. ![]()
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