Educational video describing test used to diagnose piriformis syndrome.
Piriformis Syndrome is very popular and is not clearly understood. There is minimal information related to the subject of piriformis syndrome. Piriformis syndrome can be confused with sciatica and lower back pain. Sometimes it's hard to differentiate between Piriformis Syndrome and lumbar spine disc herniation which both can cause sciatica.
Straight leg raising test is the gold standard as a clinical test to diagnose disc herniation that is irritating the sciatic nerve. Elevation of a painful limb causes sciatica and radicular paion.. other clinical tests are described but not frequently used. If the test is positive consider spine problem. Herniated disc is typically the source of sciatic pain.
The Piriformis muscle arises from the anterolateral part of the sacrum and is inserted into the posterior aspect of the greater trochanter (deep into the buttock). Pain associated with, Piriformis Syndrome is usually deep in the buttock and posterior thigh. It may also include the posterior aspect of the leg due to irritation of the sciatic nerve (sometimes misdiagnosed as lumber pine disc pathology). The patient will complain of pain in the buttock, posterior thigh, and may have “pins and needles” down the leg.
There are two tests commonly used to diagnose, Piriformis Syndrome:
Lasegue’s maneuver: stretching the nerve. Reproduction of the pain by hip is flexed to 90 degrees and the knee extended. The test can also be done with the patient on the side.
Stretching the piriformis: when stretching the piriformis muscle, assess if passive stretching of the muscle is predisposed to or causes pressure on the sciatic nerve. By adducting and internally rotating the hip, this maneuver will stretch the piriformis and will compress the nerve. This maneuver will reproduce the patient’s symptoms. Also during this maneuver, when the examiner adds pressure to the posterior part of the buttock, the patient will complain of severe tenderness and pain.
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