11/5/2023 0 Comments Malleolus lateralIn the lower ankle, inversion, eversion, supination and pronation take place. The extent of these movements differs with the type of movement. The lateral malleolus does not play a role in the lower but rather in the upper ankle joint, where movements take place on one axis. The ankle joint is most likely a hinge joint. In this joint, the lateral malleolus creates the conditions for two different movements of the foot: for extension and flexion in a dorsal or plantar direction. Without the lateral malleolus, for example, the foot could neither bend to the back of the foot nor to the sole of the foot. Neither would it be possible for him to stretch out of these positions. The anatomical structure of the lateral malleolus or fibula process is significantly involved in the formation of the ankle and lateral malleolus. The most important functions of the fibula process include the individual forms of movement of the ankle in the upper ankle joint. Each joint has specific axes of motion. The human ankle has a total of three different axes of movement and can therefore carry out six different types of movement of the foot. ![]() The malleolus lateralis forms the lower end of the tubular bone fibula and shows a thickening. A furrow runs across the outside of the bone : the sulcus malleolaris lateralis, which carries the tendons of the musculus peroneus. Inside is a joint surface called the facies articularis malleoli, which connects to the ankle bone (talus). With these structures, the lateral malleolus participates in the ankle joint and also forms a fossa. Ligaments attach to this pit-shaped fossa malleoli lateralis. There is an artery on the diaphysis that supplies bone. Except for the cartilaginous joint surfaces, the entire area of long bones is covered by the periosteum, the so-called periosteum. ![]() The trabeculae form cancellous bone and carry cavities of red bone marrow between them. The substantia spongiosa is covered on the outside by compact bone substance and carries a layer of hyaline cartilage on the articular surfaces. ![]() Anatomy & StructureĪ long bone, the fibula is a long bone made up of two bony ends called the epiphyses. There is also a bone shaft: the so-called diaphysis. The transition from the epiphysis to the diaphysis is called the metaphysis. The epiphyses are made up of a network of bony trabeculae that align with the directions of the forces acting on them. More specifically, the lateral malleolus is the lateral bony prominence at the distal end of the fibula. The anatomical structure, together with the medial malleolus, is involved in the formation of the so-called malleolus fork, which surrounds the ankle bone in the shape of a fork and ends in the ankle joint. The two main joints of the human foot are referred to as the ankle joint and the foot can move on three different levels. The human lateral malleolus is even more specifically involved in the lateral malleolus. The structure differs from the fibula structures of most animals.Īt the lower end of the fibula, ruminants carry what is left of a separate bone called the malleolar bone. Horses have fibulae that are completely fused to the tibia. Your fibula is only formed as a separate bone in the upper half of the lower leg. The lateral malleolus is also known as the fibula tip or fibula ankle. ![]() It is a typical tubular bone that is thickened at the lower end. The thickening at the lower end of the fibula is called the lateral malleolus. The fibula is one of two lower leg bones and is attached to the tibia.
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