Piriformis Muscle SyndromeButtocksInflammationSciaticaPyomyositisFluoroscopyCadaverNerve Compression SyndromesSciatic NeuropathyMyxosarcomaNeedlesNeuromuscular DiseasesInflammation MediatorsSciatic NerveInjections, IntramuscularAbscessRadiography, InterventionalInjectionsPain ManagementSyndromePainBotulinum ToxinsMuscle, SkeletalMice, Inbred C57BLAnesthetics, LocalDisease Models, AnimalUltrasonography, InterventionalCytokinesMice, KnockoutPneumoniaLung