Die Grundprinzipien der feet
Die Grundprinzipien der feet
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Anterior leg muscles All muscles originating on the lower leg except the popliteus muscle are attached to the bones of the foot. The tibia and fibula and the interosseous membrane separate these muscles into anterior and posterior groups, rein their turn subdivided into subgroups and layers.[6]
The United States is the only industrialized country that uses the (international) foot rein preference to the meter hinein its commercial, engineering, and standards activities.[4] The foot is legally recognized rein the United Kingdom; road distance signs must use imperial units (however, distances on road signs are always marked hinein miles or yards, not feet; bridge clearances are given rein meters as well as feet and inches), while its usage is widespread among the British public as a measurement of height.
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Humans usually wear shoes or similar footwear for protection from hazards when walking outside. There are a number of contexts where it is considered inappropriate to wear shoes. Some people consider it rude to wear shoes into a house and a Māori Marae should only be entered with bare feet.
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The barleycorn, inch, ell, and yard were likewise shrunk, while rods and furlongs remained the same.[23] The ambiguity over the state of the mile was resolved by the 1593 Act against Converting of Great Houses into Several Tenements and for Restraint of Inmates and Inclosures hinein and near about the City of London and Westminster, which codified the statute mile as comprising 5,280 feet. The differences among the various physical standard yards around the world, revealed by increasingly powerful microscopes, eventually Leuchtdiode to the 1959 adoption of the international foot defined rein terms of the m.
Roman units were introduced following their Okkupation rein AD 43. Following the Roman withdrawal and Saxon invasions, the Roman foot continued to Beryllium used in the construction crafts while the Belgic foot welches used for Grund measurement. Both the Welsh and Belgic feet seem to have been based on multiples of the barleycorn, but by as early as 950 the English kings seem to have (ineffectually) ordered measures to be based upon an iron yardstick at Winchester and then London. Henry I welches said to have ordered a new standard to be based upon the length of his own arm and, by the Kohlenstoff. 1300 Act concerning the Composition of Yards and Perches[22] traditionally credited to Edward I or II, the statute foot welches a different measure, exactly 10/11 of the old (Belgic) foot.
This rolling inward motion as the foot progresses from heel to toe is the way that the body naturally absorbs shock. Neutral pronation is the most ideal, efficient Durchschuss of gait when using a heel strike gait; in a forefoot strike, the body absorbs shock instead via flexion of the foot.
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Rein southwestern Germany in 1806, the Confederation of the Rhine welches founded and three different reformed feet were defined, all of which were here based on the metric Anlage:[39]
Rein contrast, the lateral longitudinal arch is very low. With the cuboid serving as its keystone, it redistributes parte of the weight to the calcaneus and the distal end of the fifth metatarsal. The two longitudinal arches serve as pillars for the transverse arch which zulauf obliquely across the tarsometatarsal joints. Excessive strain on the tendons and ligaments of the feet can result hinein beeinflussen arches or flat feet.[5]
The plantaris originates on the femur proximal to the lateral head of the gastrocnemius and its long tendon is embedded medially into the Achilles tendon. The triceps surae is the primary plantar flexor. Its strength becomes most obvious during ballet dancing. It is fully activated only with the knee extended, because the gastrocnemius is shortened during flexion of the knee. During walking it not only lifts the heel, but also flexes the knee, assisted by the plantaris.[9]
There can be many sesamoid bones near the metatarsophalangeal joints, although they are only regularly present rein the distal portion of the first metatarsal bone.[4]