Normal Postoperative Change: Epidural Space



  • Peridural fibrosis

    • Some degree of peridural fibrosis along margin of thecal sac is typical finding following discectomy

    • Edema and tissue disruption at discectomy site particularly conspicuous in first 6 weeks postoperatively

    • Can simulate disc residual/recurrent disc herniation

    • Scarring has been implicated with nerve root irritation in failed back surgery syndrome

  • Postoperative fluid collection

    • Fluid collection in operative bed is not uncommon in immediate postoperative setting

    • May have complex signal

    • May have fluid-fluid levels

    • May demonstrate peripheral enhancement

You're Reading a Preview

Become a Clinical Tree membership for Full access and enjoy Unlimited articles

Become membership

If you are a member. Log in here