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The name hyperextension is commonly used for back extension exercises that are done using a hyperextension bench in a fitness gym. However the name 'hyperextensions' is a misnomer, because hyperextension means a movement where extension is performed at any joint beyond its normal range of motion.
Genu recurvatum is also called knee hyperextension and back knee. This deformity is more common in women [citation needed] and people with familial ligamentous laxity. [2] Hyperextension of the knee may be mild, moderate or severe. The normal range of motion (ROM) of the knee joint is from 0 to 135 degrees in an adult.
Isometric exercise avoids hyperextension and contributes to strength. Unwanted symptoms are frequently reduced by some forms of yoga; Low-impact sports Use of low impact elliptical trainer machines can replace high-impact running. Pain-free swimming may require a kickboard or extra care to avoid hyperextending elbow and other joints.
Surfer's myelopathy is a rare, nontraumatic spinal cord injury caused by hyperextension of the back and resulting in paraplegia (paralysis below the waist). [1] During hyperextension, a blood vessel leading to the spine, such as the anterior spinal artery, [2] can become kinked, depriving the spinal cord of oxygen. [3]
Hyperextension increases the stress on the ligaments of a joint, and is not always because of a voluntary movement. It may be a result of accidents, falls, or other causes of trauma. It may also be used in surgery, such as in temporarily dislocating joints for surgical procedures. [6]
Hyperextension exercise being performed using a Roman chair for support. The Roman chair is a piece of exercise equipment. It is mainly used for the lower back, but can also target the buttocks, hamstrings, and abdomen.
When the subject was dropped, the head would be forced into hyperextension by the full weight of the body, a sufficient force to cause the fracture. Despite its long association with judicial hangings, one study of a series of such hangings showed that only a small minority of hangings produced a hangman's fracture. [5]
When hyperflexion and hyperextension occur suddenly in combination with this viscoelastic behavior, the PCL deforms or tears. [15] In the third and most common mechanism, the dashboard injury mechanism, the knee experiences impact in a posterior direction during knee flexion toward the space above the tibia.