Epidural fibrosis and the failed back surgery syndrome: history and physical findings.

Patients who present with recurrent symptoms after surgical intervention aimed at correcting their lumbosacral disease pose a therapeutic challenge. A heterogeneous group of factors may underlie symptom recurrence and formulation of a therapeutic strategy depends on an accurate diagnosis of the patient's underlying problem. In this review, the authors discuss the relevant historical and physical findings in patients with epidural fibrosis and the failed back surgery syndrome.