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Traumatic Disease
Radiographic Pathology
Term | Definition |
---|---|
Malunion | Fx. that heals in a faulty position impairing the normal function or appearance of that body part |
Nonunion | Fx. in which healing does not occur and the fragments do not join |
Colle's Fx | Fx. through distal inch of radius- usually angled backward on shaft Impact on palmar surface |
Smith's Fx | Dorsal side of hand for impact Opposite of Colle's fx hyper flexion distal fragment toward pulmar aspect of hand |
Boxer's Fx | 5th metacarpal (occasionally the 4th metacarpal) Blow to or with the hand Most common metacarpal fracture |
Bennett's Fx | Intraarticular fx at the base of the first metacarpal (1st carpometacarpal joint) Aculsion fx of the base of 1st in association with dislocation of trapezium from pulling action. Thumb forced backward |
Monteggia Fx. | Proximal 1/3 of ulnar shaft. Anterior dislocation of radial head |
Pott's Fx | Both malleoli, dislocation of ankle joint |
Maisonneuve Fx | widening of ankle joint, unstable ankle Also seen with fx of proximal fibula Mortise joint too open |
Occult Fx. | subtle fx not readily visible on x-ray carpal scaphoid and ribs common Clinical signs are manifested without radiographic evidence ---healing wrong, bruise to bone---> MRI |
Mandibular Fx. | often occurs in two places---- circle |
Bone Bruise | Less severe than fx, but needs time to heal. Seen from skin-- mainly seen on MRI |
Positive Anterior Fat Pad Sign | Fat pad visualization because distended by fluid as a result of a fracture. Can't see fx, but because of fat pad displacement, fx is there |
Nasal Bone Fx. | Most frequent fractured facial bone, usually distal nasal bone |
Supracondylar Fx. | distal Humeral fracture (near elbow) fall onto an outstretched hand |