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Arch Surg. 1924;8(3):782-790. doi:10.1001/archsurg.1924.01120060079004.
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A fracture is usually classed as ununited when there is free motion between fragments at the end of six months. However, there is no arbitrary time when distinction can be made between delayed union and nonunion. If stability gradually increases, the prognosis for solid union is good; and only after a stationary period has been reached without effort to consolidate can the fracture be designated as ununited. The length of time differs according to the seat of the fracture and to local and constitutional conditions. For instance, if no union occurs in a central or intracapsular fracture of the neck of the femur at the end of eight weeks, in all probability an ununited fracture exists. Failure of bony union is more frequent in the neck of the femur than elsewhere, and presents such a distinct and definite problem that a brief discussion will be made of ununited fractures of


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