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Dorsiflexion of the foot: The muscles involved include those of the Anterior compartment of leg, specifically tibialis anterior muscle, extensor hallucis longus muscle, extensor digitorum longus muscle, and peroneus tertius. The range of motion for dorsiflexion indicated in the literature varies from 12.2 [8] to 18 [9] degrees. [10]
It tends to separate the fingers as it extends them. In the fingers, the extensor digitorum acts principally on the proximal phalanges, acting to extend the metacarpophalangeal joint . Extension of the proximal and distal interphalangeal joints , however, is mediated predominantly by the dorsal and palmar interossei and lumbricals of the hand .
The muscle fans out into four tendons (one to each of the second to fifth fingers) to the palmar base of the distal phalanx. [3] Along with the flexor digitorum superficialis, it has long tendons that run down the arm and through the carpal tunnel and attach to the palmar side of the phalanges of the fingers. [4]
In anatomy, extension is a movement of a joint that increases the angle between two bones or body surfaces at a joint. Extension usually results in straightening of the bones or body surfaces involved. For example, extension is produced by extending the flexed (bent) elbow. Straightening of the arm would require extension at the elbow joint.
1.1 Arm and shoulder. 1.2 Hand and wrist. 2 Lower limb. 3 Other. ... Abduction is an anatomical term of motion referring to a movement which draws a limb out to the ...
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Examples include a movement of the knee, where the lower leg changes angle compared to the femur, or movements of the ankle. [2] The study of movement in the human body is known as kinesiology. [4] A categoric list of movements and the muscles involved can be found at list of movements of the human body.
A 20-year-old Canadian man no longer has two of his healthy fingers after deciding to get them amputated, and body integrity identity disorder is why doctors agreed to it.