Piriformis syndrome: implications of anatomical variations, diagnostic techniques, and treatment options

@article{Cassidy2012PiriformisSI,
  title={Piriformis syndrome: implications of anatomical variations, diagnostic techniques, and treatment options},
  author={Lindsey Cassidy and Andy Walters and Kathleen Bubb and Mohammadali M. Shoja and R Shane Tubbs and Marios Loukas},
  journal={Surgical and Radiologic Anatomy},
  year={2012},
  volume={34},
  pages={479-486}
}
Details of piriformis syndrome, including the proper diagnosis and most effective form of treatment, continue to be controversial. While the cause, diagnosis, and treatment of piriformis syndrome remain elusive, many studies have been conducted to investigate newly developed diagnostic techniques as well as various treatment options for piriformis-induced sciatica. Despite the quantity of literature, few studies have demonstrated statistically significant results that support one form of… 
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Piriformis syndrome is at a stage previously encountered with herniated intervertebral disc: its prevalence among low back pain and sciatica sufferers and the diagnostic accuracy of clinical features requires cross-sectional studies free of incorporation and verification biases.
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References

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TLDR
The use of botulinum toxin (BTX) to treat piriformis syndrome supports the prevailing pathoanatomic etiology of the condition and suggests a promising future for BTX in the treatment of other myofascial pain syndromes.
PIRIFORMIS SYNDROME: A REAL PAIN IN THE BUTTOCK?
TLDR
An unbiased review of the medical literature pertaining to piriformis syndrome revealed that the existence of this entity remains controversial, and it should be considered in the differential diagnosis of patients with unilateral lower extremity pain.
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TLDR
A perisciatic injection of steroid using simple landmarks and utilizing a nerve stimulator to locate and inject near the sciatic nerve and into the piriformis muscle is described.
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TLDR
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TLDR
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TLDR
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Piriformis Syndrome: Anatomic Considerations, a New Injection Technique, and a Review of the Literature
TLDR
The technique used in the current study was successful in injecting the medications near the area of the sciatic nerve and into the piriformis muscle and in the patients who received the injections.
Piriformis syndrome: a simple technique for US-guided infiltration of the perisciatic nerve. Preliminary results
TLDR
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TLDR
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Nerve Entrapment Syndromes as a Cause of Pain in the Hip, Groin and Buttock
TLDR
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