What is medical term SLR?
What is medical term SLR?
The Straight Leg Raise (SLR) test is a commonly used test to identify an impairment in disc pathology or nerve root irritation.
What does positive SLR test mean?
A positive straight leg raising test (also known as Lasegue sign) results from gluteal or leg pain by passive straight leg flexion with the knee in extension, and it may correlate with nerve root irritation and possible entrapment with decreased nerve excursion.
What nerve does the SLR test?
The straight leg raise (SLR) test is the most commonly performed physical test for diagnosis of sciatica and lumbar disc hernia [10]. The SLR is considered positive when it evokes radiating pain along the course of the sciatic nerve and below the knee between 30 and 70 degrees of hip flexion [2].
How can sciatica be diagnosed?
The most common imaging tests used to diagnose sciatica and find its cause are spinal X-rays, MRIs, and CT scans. Normal X-rays will not be able to provide a view of sciatic nerve damage. An MRI uses magnets and radio waves to create detailed images of your back.
How do you do a SLR for sciatica?
Straight leg raise (SLR) test. This test includes the patient lying on his/her back and lifting one leg at a time with the other leg flat or bent at the knee. A pain encountered while lifting the affected leg usually indicates sciatica.
Can SLR be negative?
In our practice with LDH patients, the SLR test is frequently negative despite radicular leg pain due to LDH. Furthermore, it was our hypothesis that the age may have an effect on these negative results. Hence, we decided to evaluate the SLR test in different age groups in patients with LDH and positive MRI findings.
What are SLR tests with a particular nerve bias?
Modifications to the Straight Leg Raise test can be used to stress different peripheral nerves to a greater degree; these are referred to as SLR tests with a particular nerve bias. SLR test and its Modifications
How is the SLR test performed in the workup of knee replacement?
Each leg is tested individually with the unaffected leg being tested first. When performing the SLR test, the patient is positioned in supine without a pillow under his/her head, the clinician stands at the tested side with the distal hand around the patient’s heel and proximal hand on patient’s distal thigh (anterior) to maintain knee extension.
What is the specificity of a crossed SLR test?
The crossed SLR showed high specificity (pooled estimate 0.90, 95% CI: 0.85 to 0.94) with consistently low sensitivity (pooled estimate 0.28, 95% CI: 0.22 to 0.35). Combining positive test results increased the specificity of physical tests, but few studies presented data on test combinations.
Can lumbar radiculopathy cause a false positive on an SLR test?
Further, pain that is not specific to lumbar radiculopathy, such as that associated with hamstring tightness, may also lead to false positives for the SLR; and may inflate the sensitivity of the test.
