Author: Glossary
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Pretrochanteric fracture
A fracture that passes through the greater trochanter of the femur.
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Ping-pong fracture
A depressed fracture of the skull that resembles the indentation made by pressing firmly on a ping-pong ball.
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Overriding fracture
A fracture in which the ends of the fractured bone slide past each other.
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Orbital blow-out fracture
A fracture of the bony floor beneath the eye. It typically results in entrapment of the inferior rectus muscle, with a consequent inability to look upward with the affected eye, which causes double vision during vertical gaze.
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Occult fracture
A fracture that is suspected based on clinical grounds (e.g., guarding, pain, and swelling) but not seen on x-rays. The fracture may be seen with bone scans or magnetic resonance imaging.
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Nightstick fracture
A nondisplaced transverse fracture of the ulna resulting from a direct blow.
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Lover’s fracture
A fracture of the calcaneus, due to jumping from a height (e.g., a balcony or second-story window).
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Lead pipe fracture
A fracture in which the bone is compressed and bent so that one side of the fracture bulges and the other side shows a slight crack.
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Intracapsular fracture
A fracture occurring within the capsule of a joint.
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Insufficiency fracture
A stress fracture occurring in abnormal bone (e.g., osteoporotic bone) subjected to normal forces.