Do Systemic Factors Influence the Fate of Nonunions to Become Atrophic? A Retrospective Analysis of 162 Cases

Figure 5

Frequency analysis of fracture-implant characteristics. (a) Radiological evident implant loosening occurred more often in atrophic nonunion (n=26, 41.3%) compared with hypertrophic nonunion patients (n=36, 36.4%). However, no association was found between nonunion type and implant loosening ((1)> = 0.392, p=0.619). (b) Frequency of open fractures leading to nonunion was higher in the hypertrophic (n=30, 30.3%) compared to the atrophic group (n=14, 22.2%). There was also no association between fracture type and nonunion type ((1)> = 1.271, p=0.282) ( test, = p <0.05).

(a)

(b)