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Normally, bone continuously breaks down and rebuilds—old bone is resorbed and replaced with new bone. The process keeps the skeleton strong and helps it to maintain a balance of minerals. [23] In the course of avascular necrosis, however, the healing process is usually ineffective and the bone tissues break down faster than the body can ...
A bone fracture (abbreviated FRX or Fx, F x, or #) is a medical condition in which there is a partial or complete break in the continuity of any bone in the body. In more severe cases, the bone may be broken into several fragments, known as a comminuted fracture. [1]
Necrosis (from Ancient Greek νέκρωσις (nékrōsis) 'death') is a form of cell injury which results in the premature death of cells in living tissue by autolysis. [1] The term "necrosis" came about in the mid-19th century and is commonly attributed to German pathologist Rudolf Virchow , who is often regarded as one of the founders of ...
The major tissues affected are nerves and muscles, where irreversible damage starts to occur after 4–6 hours of cessation of blood supply. [4] Skeletal muscle, the major tissue affected, is still relatively resistant to infarction compared to the heart and brain because its ability to rely on anaerobic metabolism by glycogen stored in the cells may supply the muscle tissue long enough for ...
A direct hit to the collarbone can also cause a break. In most cases, the direct hit occurs from the joint side towards the body side of the bone. The muscles involved in clavicle fractures include the deltoid, trapezius, subclavius, sternocleidomastoid, and sternohyoid. The ligaments involved include the conoid ligament and trapezoid ligament.
Doctors explain why this trend can damage your appearance and cause long-term health problems.
The muscle damage is most usually caused by a crush injury, strenuous exercise, medications, or a substance use disorder. [3] Other causes include infections , electrical injury , heat stroke , prolonged immobilization, lack of blood flow to a limb , or snake bites [ 3 ] as well as intense or prolonged exercise, particularly in hot conditions ...
A humerus fracture is a break of the humerus bone in the upper arm. [1] Symptoms may include pain, swelling, and bruising. [1] There may be a decreased ability to move the arm and the person may present holding their elbow. [2] Complications may include injury to an artery or nerve, and compartment syndrome. [2]