We report a case of degenerative L4–L5 spondylolisthesis in a 32-year-old female who had undergone thoracic (lower level T12) fusion as a teenager. All other levels in the lumbar spine were normal on magnetic resonance imaging. Subsequent fusion of L4–L5 led to improvement in function and alleviation of pain for more than 4 years. The possible relationship between the previous fusion and degenerative spondylolisthesis is discussed.
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