Importance of the peridural membrane in percutaneous vertebroplasty.
OBJECTIVE
The peridural membrane is a fibrous membrane that lies anterior to the posterior longitudinal ligament and attaches to its deep layer. It spans the width of the vertebral body and encircles the bony canal around the outside of the dura. The purpose of this study was to determine if the peridural membrane helps contain posterior cement leakage during percutaneous vertebroplasty.


METHODS
Compression fractures were experimentally created in cadaveric spines. The bodies were stabilized using bipedicular injection of cement, and injection was continued until cement was evident beyond the posterior border of the vertebral body. The vertebral segments were then dissected and the extravasated cement localized anatomically.


CONCLUSIONS
All extravasated cement was constrained by the peridural membrane, and no direct contact of the cement with the dura was seen.
Hostin
Richard
R
Department of Orthopaedics, University of California at Davis, 4860 Y Street, Sacramento, CA 95817, USA.
Carr
James
J
Gupta
Munish C
MC
Hazelwood
Scott
S
Dublin
Arthur
A
D001843:Bone Cements / Q000032:analysis* / Q000627:therapeutic use; D004388:Dura Mater / Q000473:pathology / Q000601:surgery; D006801:Humans; D008422:Materials Testing / Q000379:methods; D008566:Membranes / Q000473:pathology / Q000601:surgery; D013115:Spinal Canal / Q000473:pathology* / Q000601:surgery; D013117:Spinal Cord Compression / Q000473:pathology* / Q000601:surgery; D016103:Spinal Fractures / Q000473:pathology* / Q000601:surgery; D013123:Spinal Fusion / Q000295:instrumentation / Q000379:methods*; D013904:Thoracic Vertebrae / Q000473:pathology / Q000601:surgery
D001843:Bone Cements