- Patient supine, examiner places one hand under patient’s ankle & other hand over patient’s knee (to insure knee stays extended during action).
- Examiner then proceeds to passively elevate the straight leg.
- Bradard’s Sign
- To reproduce the Bradard’s Sign, the patient leg is then lowered to an angle just below the production of pain and the examiner then dorsiflexes the foot, to reproduce the pain.
Radicular leg pain Nerve root compression, intervertebral disc herniation, piriformis entrapment
Lower back pain Sacroiliac/lumbar sprain/strain
|Degrees of Flexion||Tissue Involved|
|0° to 35°||Extradural involvement|
|35° to 70°||Disc/nerve root involvement|
|Above 70°||Sacroiliac/lumbar joint pain|
- Criteria for Sciatica (From Disc Herniation)
- Leg pain is greater then back pain
- Dermatomal paresthesia
- SLR limited to 50% of normal
- Two of four neurological signs present (atrophy, motor weakness, decreased sensation, decreased deep tendon reflex)