Lumbar stenosis (low back pain with symptoms down the legs due to narrowing of the spinal canal area) predictor rules

Lumbar stenosis predictor rules:

The picture above is from the website: colepaintherapygroup.com

Lumbar stenosis predictor rules are below:

Age: 60–70
>70
1
2
Absence of diabetes 1
Intermittent claudication (leg pain from clogged arterties with activity) 3
Exacerbation of symptoms when standing up 2
Symptom improvement when bending forward 3
Symptoms induced by having patients bend forward −1
Symptoms induced by having patients bend backward 1
Good peripheral artery circulation 3
Abnormal Achilles tendon reflex 1
Straight leg raise test positive (Lifting the leg straight from 30 to 70 degrees and sciatica is experienced) −2
  • A score equal or greater than 7 has a sensitivity of 92.8% and a specificity of 72.0% for the diagnosis of symptomatic lumbar spinal stenosis
  • Konno S, Hayashino Y, et al.  European spine journal.2007;16(11):1951–7.

The basic definition of sensitivity is the more sensitive a test is the more likely it is that you can rule a condition out. The basic definition of specificity is the more specific a test is the more likely you can rule in a condition.

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