Four symptoms define the piriformis syndrome: an updated systematic review of its clinical features

@article{Hopayian2017FourSD,
  title={Four symptoms define the piriformis syndrome: an updated systematic review of its clinical features},
  author={Kevork Hopayian and Armine Danielyan},
  journal={European Journal of Orthopaedic Surgery \& Traumatology},
  year={2017},
  volume={28},
  pages={155-164}
}
PurposeTo update the evidence on the clinical features of the piriformis syndrome since the first systematic review published in 2010.MethodA systematic review of all case, cross-sectional and prevalence studies.ResultsThe commonest features reported were: buttock pain, pain aggravated on sitting, external tenderness near the greater sciatic notch and pain on any maneuver that increases piriformis muscle tension, and limitation of straight leg raising. The quality of case reports since the… 
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TLDR
The most common features found in sciatica patients with and without disc herniation or spinal stenosis were: buttock pain, external tenderness over the greater sciatic notch, aggravation of the pain through sitting and augmentation of thePain with manoeuvres that increase piriformis muscle tension.
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TLDR
The maneuver described in this report was helpful in diagnosing the piriformis syndrome because it relies on contraction of the muscle, rather than stretching, which the author believes better reproduces the actual syndrome.
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TLDR
Among a variety of deep muscle trigger points, the piriform muscle trigger point is selected for individual scrutiny by the great potential for confusing this entity with discogenic disease and consequently having unnecessary surgical procedures carried out.
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