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B367 Ultrasound-guided injection in piriformis muscle
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  1. N Alexiadou,
  2. E Nikouli,
  3. S Lefkaditis,
  4. M Spyrou,
  5. N Mprazoukakis,
  6. G Koumarampis,
  7. G Papageorgiou and
  8. E Antonopoulou
  1. Anaesthetic Department General Hospital of Xanthi, Xanthi, Greece

Abstract

Background and Aims Piriformis syndrome is a common cause of buttock and posterior leg pain. Diagnosis is often difficult, and it is one of exclusion due to few validated and standardized diagnostic tests. It has been described the US guided technique for piriformis muscle injections. We study the efficacy and efficiency of the above technique.

Methods We studied 24 patients 10 males and 14 females aged from 45 to 75 years old with a diagnosis of piriformis syndrome.The patients received 3 ml of 0.5 ropivacaine combined with 3mg betamethasone sodium phosphate using an ultrasound technique to identify the piriformis muscle. We studied numeric pain score and hip function immediately, 2weeks and 3 months post procedure.

Results The pain score was 5.91±2.13 before the procedure.2.24±0.72 immediately after and 2.73±0.55 two weeks later and 2.88±0.86 three months later.

There was improvement 80–90% in hip function in all patients immediately after the procedure which lasted to 3 months. There were no adverse events due to the injection. Two patients had minor leg weakness which lasted for 5 hours.

Conclusions US –guided technique for piriformis muscle injection is a safe and efficient technique according to our study.

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