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Clin Orthop Relat Res. 1975 Sep;(111):257-62.

The effect of movement on the holding power of screws in bone.

Abstract

Movement between screw threads and bone inhibits bone formation, revascularization and remodeling of dead bone. Movement causes the screw to become enveloped by fibrous tissue in response to necrosis and resorption of adjacent dead cortical bone. This results in a radiologically discernible radiolucent "halo" about the screw, a certain sign of screw loosening.

PMID:
1157420
[Indexed for MEDLINE]
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