avulsion(redirected from Avulsions)
Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.
avulsion/avul·sion/ (ah-vul´shun) the tearing away of a structure or part.
avulsionThe tearing away of an attached or anchored tissue, as in the avulsion of a muscle from its insertion in bone—e.g., an avulsion fracture in which bone remains attached to the inserted muscle, but loses its attachment to surrounding bone.
avulsionMedtalk The tearing away, as may occur with a nerve or part of a bone
avulsion(a-vul'shun) [Gr. a-, not, + L. vellere, to pull]
avulsionForcible tearing off, or separation, of part of the body usually in the course of major injury. From the Latin avulsio , to separate by force.
avulsiona forcible wrenching away, usually by injury, of a structure or part of the body, e.g. of nerves or of part of a bone.
traumatic avulsionnail avulsion due to local injury
nail avulsionremoval of all or part of a nail plate with or without associated matrisectomy
chemical nail avulsion application of 40% urea cream to hypertrophied nail tissue, over several weeks; 40% urea causes marked maceration of nail keratin, and gradual plate erosion
partial nail avulsion elective avulsion of outer segment/s of nail plate Figure 1
surgical nail avulsion removal of all or part of nail plate (by its separation from local soft-tissue attachments [i.e. proximal nail fold and eponychium; lateral/medial nail folds; nail bed], and sharp division of nail segment from remaining main plate) with or without matrisectomy, to relieve symptoms of ingrowing toenail, pain due to nail malformation or severe onychophosis
traumatic nail avulsion unplanned plate avulsion due to application of sudden force/trauma; subsequent nail growth is likely to be dystrophic