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Table 1 Checklist for the diagnosis of clinical instability in the lumbar spine

From: Doxycycline plus streptomycin versus ciprofloxacin plus rifampicin in spinal brucellosis [ISRCTN31053647]

Element

Point value

Anterior elements destroyed or unable to function

2

Posterior elements destroyed or unable to function

2

Radiographic criteria

4

   Flexion-extension radiographs

 

Sagital plan translation >4.5 mm or 15% (2pt)

 

Relative sagittal plane angulation >22 degress (2pt)

 

Cauda equine damage

3

Dangerous loading anticipated

1