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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]
The brachial plexus may also be compressed by surrounding damaged structures such as bone fragments or callus from the clavicular fracture, and hematoma or pseudoaneurysm from vascular injury. Cervical rib, prominent transverse process, and congenital fibrous bands can also compress the brachial plexus and cause thoracic outlet syndrome. [14]
Clay-shoveler fracture – fracture through the spinous process of a vertebra occurring at any of the lower cervical or upper thoracic vertebrae; Burst fracture – in which a vertebra breaks from a high-energy axial load; Compression fracture – a collapse of a vertebra, often resulting in the form of a wedge-shape due to larger compression ...
Bone abnormalities include the presence of a cervical rib and a prolonged transverse process. [15] Soft tissue abnormalities include scalene muscle hypertrophy, the presence of a fourth scalene muscle (scalenus minimus), or connective tissue abnormalities. [16] Trauma (e.g., whiplash injuries) or repetitive strain is frequently implicated. [15]
The twelfth thoracic vertebra has the same general characteristics as the eleventh, but may be distinguished from it by its inferior articular surfaces being convex and directed lateralward, like those of the lumbar vertebrae; by the general form of the body, laminae, and spinous process, in which it resembles the lumbar vertebrae; and by each ...
A compression fracture of the vertebra can also cause acute and/or chronic pain in the upper back. Trauma may cause a fracture, but in women over age 50 without significant trauma or someone known to have osteoporosis, a spontaneous vertebral compression fracture is possible. [4]
[58] [59] Loss of bone density (bone demineralization), thought to be due to lack of input from weakened or paralysed muscles, can increase the risk of fractures. [60] Conversely, a poorly understood phenomenon is the overgrowth of bone tissue in soft tissue areas, called heterotopic ossification. [61]
A sternal fracture is a fracture of the sternum (the breastbone), located in the center of the chest.The injury, which occurs in 5–8% of people who experience significant blunt chest trauma, may occur in vehicle accidents, when the still-moving chest strikes a steering wheel or dashboard [1] or is injured by a seatbelt.