Crosssection Of The Leg
Crosssection Of The Leg – Cross-section of lower right leg through calf, showing 4 compartments: anterior to upper right; lateral to cter right; deep back to cter; shallow back below
Calf (PL: calves; Latin: sura) in human anatomy is the back part of the lower leg.
Crosssection Of The Leg
The calf muscles correspond to the back compartment of the leg. The two largest muscles in this compartment are collectively called the calf muscles and are attached to the heel by the Achilles tendon. Several smaller muscles attach to the knees, ankles and by long tendons to the toes.
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From Middle Glish calf, kalf, from Old Norse kalfi, probably from the same Germanic root as Glish calf (“young calf”). Related to Icelandic kálfi (“leg calf”).
Calf and calf are documented in use in Middle Glish around AD 1350 and AD 1425 respectively.
Historically, calf abscess, meaning lower leg without a distinct calf muscle, has been regarded by some authors as a sign of inferiority: apes are known not to have calves, and even less so among the lower orders of mammals. .
The calf consists of the muscles of the back compartment of the leg: gastrocnemius and soleus (forms the triceps surae muscle) and tibialis posterior. The sural nerve provides innervation.
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Edema is also common and in many cases is idiopathic. In a small study of healthy factory workers, wearing compression garments helped reduce edema and edema-related pain.
Calf circumference was used to assess selected health risks. In Spain, a study of 22,000 people aged 65 or older found that smaller calf circumferences were associated with a higher risk of malnutrition.
In France, a study of 6,265 people aged 65 and over found an inverse relationship between calf circumference and carotid plaques.
The feet can be separated by doing movements involving plantarflexion (pointing the toes down). The two main categories of calf exercises are those that keep the knee extended and those that keep the knee bent.
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The first category includes movements like standing calf raises, donkey calf raises, and stair calf raises. The second category includes movements that keep the knee bent, such as seated calf raises. Straight knee movements will target the gastrocnemius muscle more and bent knee movements will target the foot muscle more. However, both variations will largely target the same muscles.
Because the calf muscles are typically slow-twitch, they should be trained in a moderate to high repetition range. All rep ranges have their benefits and thus calf training should be done in the 5-10 rep range, 10-20 rep range and 20-30 rep range.
It is important to train the calves relatively close to failure, which is 0-4 reps away from technical failure. They heal quickly, often taking only 10 seconds and usually no more than 60 seconds. Pausing for 1-2 seconds at the top and bottom of the movement will put more stress on the muscles and less stress on the Achilles tendon. The fascial compartment of the leg is the four fascial compartments that separate and contain the muscles of the lower leg (from the knee to the ankle). Compartments are divided by partitions made of fascia. Compartments usually have separate nerve and blood supply from their neighbors. All muscles in a compartment are usually supplied by the same nerve.
The lower leg is divided into four compartments by the interosseous membrane of the leg, the anterior intermuscular septum, the transverse intermuscular septum, and the posterior intermuscular septum.
Figure 26 From Dynamic High Resolution Sonography (d Hrus) Of Lower Limb Muscles: A Detailed Didactic Approach
Each compartment contains connective tissue, nerves and blood vessels. The septa are formed from fascia, which consists of a strong type of connective tissue. Fascia also separates skeletal muscles from subcutaneous tissue.
Because the leg is under a lot of pressure from the column of blood from the heart to the foot, the fascia is very thick to support the leg muscles.
The thickness of the fascia can cause problems if the inflammation that remains in the leg has little room to expand. Blood vessels and nerves can also be affected by the pressure caused by any swelling in the leg. If the pressure becomes strong, blood flow to the muscles can be blocked, causing a condition known as compartment syndrome. Severe nerve and blood vessel damage around the muscle can cause muscle death and may require amputation.
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