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Table 1 Group allocation.

From: Influence of preoperative nucleus pulposus status and radiculopathy on outcomes in mono-segmental lumbar total disc replacement: results from a nationwide registry

 

Description

HNP

Radiculopathy

N

DDD

classic precondition

no

no

160

HNP-No radiculopathy

HNP only

yes

no

68

Stenosis

recess stenosis

no

yes

73

HNP-Radiculopathy

classic contraindication

yes

yes

132