Review Question - QID 7961

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Lumbar Spinal Stenosis QID: 7961 (SAE12SN.48)

QID 7961 (Type "7961" in App Search)

Posterior lumbar spine arthrodesis may be associated with adjacent segment degeneration cephalad or caudad to the fusion segment. Which of the following is the predicted rate of symptomatic degeneration at an adjacent segment warranting either decompression and/or arthrodesis at 5 to 10 years after lumbar fusion?

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5.5% at 5 years and 75.5% at 10 years

27/592

10.1% at 5 years and 65.2% at 10 years

15%

87/592

16.5% at 5 years and 36.1% at 10 years

65%

386/592

26.5% at 5 years and 56.1% at 10 years

12%

70/592

49.2% at 5 years and 15.1% at 10 years

5/592

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Ghiselli and associates described a rate of symptomatic degeneration at an adjacent segment warranting either decompression or arthrodesis to be 16.5% at 5 years and 36.1% at 10 years based on a Kaplan-Meier analysis.

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