fibula muscle attachments
Its main function is to act as an attachment for muscles, and not as a weight-bearer. 2. The upper end is slightly expanded in all directions making an irregular quadrate form. The intercondylar area separates the medial and lateral plateau and is divided into the anterior and posterior areas. It runs parallel to the tibia and plays a notable role in stabilizing the ankle joint and supporting the muscles of the lower leg. The anterior compartment of the leg acts to dorsiflex and invert the foot through the ankle joint. Because of this, and the inherent forces placed on the bone by the muscles, stress fractures are common in the fibula. It has three main articulations: Proximal tibiofibular joint – articulates with the lateral condyle of the tibia. The tibia articulates with the condyles of the femur superiourly and the talus inferiorly and in so doing transfers the body,s weight. The fibula's role is to act as an attachment for muscles, as well as providing stability of the anklejoint. The fibula provides lateral stability to the lower limb and to the ankle joint. If you believe that this Physiopedia article is the primary source for the information you are refering to, you can use the button below to access a related citation statement. Head of Fibula 1. The posterior surface is marked by a groove. It also articulates with the tibia and the talus to allow for additional range of motion during rotation of the ankle. One of the hamstrings, the biceps femoris muscle, has its insertion at the head of the fibula and pulls on the fibula to flex the leg at the knee. Actions of Fibularis (Peroneus) Teritius Muscle on the foot: a. Distal: The lateral malleolus articulates with the a) fibular notch of the tibia to form the distal tibiofibular joint and b) talus to form the superior part of the ankle joint. Insertion of the biceps femoris on the anterolateral slope of the apex. There are several muscles of the leg, including some from the upper leg, that attach along the entire length of the fibula to include both ends and the shaft. The head faces in a proximal and anteromedial direction. The fibula is a bone located within the lateral aspect of the leg. It lies between the anterior and posterior borders. How To Protect Your Eyes From Electronics Devices? The ankle joint is maintained by the shape of the talus and its tight fit between the tibia and fibula. There are also multiple muscles in the ankle that can be strained, as follows: The peroneal muscles (peroneus longus and peroneus brevis), on the outside edge of the ankle and foot. Proximal: A enlarged pointed head and small neck form the proximal part of the fibula. It has the four surfaces-. The anterior compartment of the leg muscles is innervated by the deep fibular nerve (L4-L5) and supplied blood via the anterior tibial artery. The main function of the fibula bone is as a point of attachment for many of the muscles of the lower leg. Overview. It lies within the anterior and interosseus borders. A natural fibula in an otherwise healthy individual does not bear any significant body weight. The difference in thickness corresponds to the varying roles of the two bones; the tibia bears the body’s weight from the knees to the ankles, while the fibula merely functions as a support for the tibia. Extensions of origins of-Extensor digitorum,Peroneus longus & Soleus muscles. All rights reserved. It’s attached to the leg bone (tibia) via strong ligaments and there is a small joint here. Anterior, Posterior, Interosseus borders & medial, lateral and posterior surfaces. The most common type of fibula fracture is located at the distal end of the bone, and is classified as ankle fracture. In its upper two-thirds of the interosseous border lies very close to the anterior border. Tap again to see term . The proximal attachment of the muscle is divided between the lateral aspect of the shaft of the tibia, the medial aspect of the fibula, and the interosseous membrane (connective tissue spanning the space between the tibia and fibula) from the level just inferior to the head of the fibula to approximately halfway down the length of the fibula. The lateral surface is subcutaneous. Copyright © 2016 - 2019 How To Relief. The fibula is a non-weight-bearing bone. The fibula is the thinner and posteriolaterally situated of the two lower leg bones. Anterior talofibular ligament to the anterior surface. Inclination of this surface can vary … In most cases Physiopedia articles are a secondary source and so should not be used as references. Muscles Attachments of the Tibia Tensor fasciae latae muscle insert into the gerdy’s tubercle. The muscle is attached to the head of the fibula and is controlled by the fibular nerve. The proximomedial head articulates with the tibia to form the superior tibiofibular jointvia a rounded facet. Immediately below the head, the fibula constricts and the part is referred to as neck of the fibula. Extensor hallucis longus muscle – From the posterior half of its middle two-fourths. This results in traction and twisting forces placed on the fibula bone from the surrounding muscles,which over time cause a stress fracture. It is also known as the lateral malleolus and along with the inferior surface of the tibia.The tip of the lateral malleolus is 0.5 cm lower than that of the medial malleolus, and its anterior surface is 1.5 cm posterior to that of the medial malleolus. Posterior tibiofibular ligament (posteriorly). Minor calf strains, often referred to as grade one strains, cause mild discomfort in the gastrocnemius and soleus muscles of the lower leg, but have negligible effects on the fibula. Philadelphia: Wolters Kluwer, 2010. The lower end of the fibula appears during the first year and fuses with the shaft by 15-17 years. The lower leg is made up by two bones - the tibia and fibula. The shaft of the fibula is slim and its shape is moulded by attached muscles and therefore shows considerable variation in its form. The fibula's role is to act as and attachment for muscles, as well as providing stability of the ankle joint. The capsule of the ankle joint along the edges of the malleolar articular surface. 1173185. Middle anterior surface of fibula. Is superficial and brevis is in line with the styloid process ( formed from the posterior of... Allow the ankle to bend downward and outward is located at the limb! 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