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fascia surrounding the piriformis muscle, participating in closure of the greater sciatic foramen and sometimes perforated with the muscle, by the fibular nerve portion of the sciatic nerve.
Synonym(s): fascia musculi piriformis [TA]
pir·i·for·mis fas·ci·a(piri-fōrmis fashē-ă) [TA]
Fascia surrounding piriformis muscle.