Sciatica: When to image. When to refer. Juanita Halls M.D. Internal Medicine October 10, 2007. No financial disclosures. Objectives. Understand when to perform imaging on patients presenting with sciatica Understand when to refer patients with sciatica to a spine surgeon. Case 1.
Juanita Halls M.D.
October 10, 2007
Passive lifting of the leg with the knee extended produces pain radiating down the posterior or lateral aspect of the leg, distal to the knee and usually into the foot.
Dorsiflexion of the foot (Lasegue's test) will exacerbate these symptoms
Weak ankle dorsiflexion
Ipsilateral calf wasting
Leg sensation abnormal
Abnormal ankle jerk
Straight-leg raising maneuver
Crossed straight-leg raising maneuver
Sensitivity/specificity for radiculopathy, in patients with sciatica*