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A compression fracture is a collapse of a vertebra. It may be due to trauma or due to a weakening of the vertebra (compare with burst fracture). This weakening is seen in patients with osteoporosis or osteogenesis imperfecta, lytic lesions from metastatic or primary tumors, [1] or infection. [2] In healthy patients, it is most often seen in ...
Rarefaction is the reduction of an item's density, the opposite of compression. [1] Like compression, which can travel in waves (sound waves, for instance), rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave (see picture). Rarefaction waves expand with time (much like ...
A flexion teardrop fracture is a fracture of the anteroinferior aspect of a cervical vertebral body due to flexion of the spine along with vertical axial compression. [1] The fracture continues sagittally through the vertebral body, and is associated with deformity of the body and subluxation or dislocation of the facet joints at the injured level. [2]
Vertebral augmentation. Vertebral augmentation, including vertebroplasty and kyphoplasty, refers to similar percutaneous spinal procedures in which bone cement is injected through a small hole in the skin into a fractured vertebra in order to relieve back pain caused by a vertebral compression fracture.
A Chance fracture is a type of vertebral fracture that results from excessive flexion of the spine. [8][9] Symptoms may include abdominal bruising (seat belt sign), or less commonly paralysis of the legs. [4][10] In around half of cases there is an associated abdominal injury such as a splenic rupture, small bowel injury, pancreatic injury, or ...
Radial inclination. The radial inclination of a distal radius fracture is shown in red in image at right. The angle is measured between: [4][5] A line drawn between the distal ends of the articular surface of the radius on an AP view of the wrist. A line that is perpendicular to the diaphysis of the radius. Radial inclination is normally 21-25°.
A Salter–Harris fracture is a fracture that involves the epiphyseal plate (growth plate) of a bone, specifically the zone of provisional calcification. [2] It is thus a form of child bone fracture. It is a common injury found in children, occurring in 15% of childhood long bone fractures. [3] This type of fracture and its classification ...
Other names. Hill–Sachs fracture. Anterior shoulder dislocation on X-ray with a large Hill–Sachs lesion. Specialty. Orthopedics. A Hill–Sachs lesion, or Hill–Sachs fracture, is a cortical depression in the posterolateral head of the humerus. It results from forceful impaction of the humeral head against the anteroinferior glenoid rim ...