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Fig. 4 | BMC Musculoskeletal Disorders

Fig. 4

From: Morphology of intervertebral disc ruptures evaluated by vacuum phenomenon using multi-detector computed tomography: association with lumbar disc degeneration and canal stenosis

Fig. 4

Characteristics of intradiscal vacuum phenomena (VPs) in shape classification. a Number of vacuum phenomena (VPs) positive-discs by shape classification in males and females. b Number of VP-positive discs by age group by VP shape classification. The counts of VP-positive discs are written in the graph. Percentages in parentheses indicate the proportion of VP-positive discs of each rupture shape compared with the total number of VP-positive discs by gender (a) and by age group (b)

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