Physical Examination of the Patient with Pain

CHAPTER 5 PHYSICAL EXAMINATION OF THE PATIENT WITH PAIN










6. What is the straight leg raising test and what are its implications?


Straight leg raising (SLR) is used to check for lower lumbar root irritation (radiculitis) or radiculopathy. In a supine position, the patient’s leg is passively elevated from the ankle. The knee is kept straight. Normal patients can reach nearly 90 degrees without pain. In patients with lower lumbar nerve root irritation, SLR is relatively sensitive and produces pain radiating distally in a radicular distribution. Somewhat less sensitive but more specific is contralateral SLR. In this case, the pain-free leg is elevated; in a positive test, pain is felt on the affected side (e.g., the side of the nerve roots involvement).


The straight leg raise is usually positive for sciatic pain going below the knee at 30 to 45 degrees, except in flexible dancers and athletes. Pain from tight hamstrings is localized to the muscle and tendons and may limit range of motion. If “true” sciatic pain radiating down the leg in a radicular distribution is experienced by the patient, then the examiner should bring down the leg 10 degrees until the pain subsides and plantarflex the foot, asking “does this make the pain worse?”. If it does, this may indicate enhanced pain behavior. Then dorsiflex the foot. This tugs on the sciatic nerve and may worsen the pain of root irritation or impingement. If the examiner brings the leg down to where the pain gets better and then externally rotates the leg (hip), this should make the pain better, and internal rotation of the leg may make it worse. A more central herniation may yield pain in the affected leg on raising of the well leg.


Jun 14, 2016 | Posted by in PAIN MEDICINE | Comments Off on Physical Examination of the Patient with Pain

Full access? Get Clinical Tree

Get Clinical Tree app for offline access