Table 3.
The data of Ishihara's study are quoted from the previous our report [7].
The abbreviation of the progressive pattern of the postoperative adjacent disc degeneration after anterior lumbar interbody fusion.
ALIF: Anterior lumbar interbody fusion, JOA: Japanese Orthopaedic Association, DSN: Disc space narrowing, SIT: Segmental instability with translation, CSU: Collapse or spontaneous union.
The data of adjacent disc degeneration were statistically compared with spondylolysis (chi-square test: a)p < 0.001, b)p < 0.01, c)p < 0.05). The rate of postoperative adjacent disc degeneration was statistically high in the item of total cases, DSN type (upper level) and CSU type (lower level) in the spondylolisthesis group (present study).