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The fibula does not carry any significant load (weight) of the body. It extends past the lower end of the tibia and forms the outer part of the ankle providing stability to this joint. It has grooves(a depression) for certain ligaments which gives them leverage and multiplies the muscle force.
The classic fibula of the late-Roman era, and in fact the best known of all fibula types, is the crossbow type. [4] [5] The crossbow fibula consists of a highly arched semi-circular bow, usually of squarish cross-section, and a long flat foot. The fibula has a wide transverse bar (or arms) at the head containing the pin-hinge.
The talocrural joint is the only mortise and tenon joint in the human body, [9]: 1418 the term likening the skeletal structure to the woodworking joint of the same name. The bony architecture of the ankle consists of three bones: the tibia, the fibula, and the talus.
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The term fibula eventually became the standard name for the bone, but many of the related arteries, muscles, and nerves are still called by the Greek derived name peroneal. The Terminologia Anatomica , the international standard for anatomical nomenclature, states that both fibula and perone derived names are acceptable, but lists the fibula ...
The leg is the entire lower limb of the human body, including the foot, thigh or sometimes even the hip or buttock region. The major bones of the leg are the femur (thigh bone), tibia (shin bone), and adjacent fibula. There are 60 bones in each leg. The thigh is located in between the hip and knee.
The tibia is connected to the fibula by the interosseous membrane of leg, forming a type of fibrous joint called a syndesmosis with very little movement. The tibia is named for the flute tibia. It is the second largest bone in the human body, after the femur. The leg bones are the strongest long bones as they support the rest of the body.
In the leg, the syndesmosis between the tibia and fibula strongly unites the bones, allows for little movement, and firmly locks the talus bone in place between the tibia and fibula at the ankle joint. This provides strength and stability to the leg and ankle, which are important during weight bearing.