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Crepitus can easily be created and observed by exerting a small amount of force on a joint, thus 'cracking it'. This is caused by bubbles of nitrogen forming in the synovial fluid bursting. Almost every joint in the body can be 'cracked' in this way, but the joints which require the least amount of force to produce this effect include the ...
Intergranular cracking is dependent on the relative orientation of the common boundary between two grains. The path of intergranular fracture typically occurs along the highest-angle grain boundary. [6] In a study, it was shown that cracking was never exhibited for boundaries with misorientation of up to 20 degrees, regardless of boundary type ...
Spinal column or vertebral injuries can be classified using the AO spine injury classification system. [5] The three categories - A, B, and C - are based on the location of damage on the vertebra (either on the anterior or posterior segment) and by the direction of the applied injurious force.
The number of vertebrae in a region can vary but overall the number remains the same. In a human spinal column, there are normally 33 vertebrae. [3] The upper 24 pre-sacral vertebrae are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx, or tailbone.
Usually occurs in the vertebrae, for example when the front portion of a vertebra in the spine collapses due to osteoporosis (a medical condition which causes bones to become brittle and susceptible to fracture, with or without trauma) Impacted fracture Bone fragments are driven into each other more images: Avulsion fracture
“In general, cracking your knuckles occasionally is fine, as it doesn’t promote arthritis,” Egbogah says. “But it is possible to injure your hands while trying to crack your knuckles.”
The human back, also called the dorsum (pl.: dorsa), is the large posterior area of the human body, rising from the top of the buttocks to the back of the neck. [1] It is the surface of the body opposite from the chest and the abdomen.
Infection: this is the most common complication of fractures and predominantly occurs in open fractures. Post-traumatic wound infection is the most common cause of chronic osteomyelitis in patients. Osteomyelitis can also occur following surgical fixation of a fracture. [8] Non-union: no progression of healing within six months of a fracture ...