duraplasty

Duraplasty is a surgical procedure used to repair or replace the dura mater, the outermost membrane that surrounds the brain and spinal cord. The term derives from “duram” (dura mater) and “plasty” (surgical repair). It is performed in both neurosurgical and spinal procedures to reestablish the protective barrier, prevent cerebrospinal fluid leaks, and reduce the risk of infection.

Indications for duraplasty include traumatic skull fractures, tumor resections, aneurysm clippings, and spinal surgeries such as decompression or fusion. In cases where the native dura is damaged or resected, a duraplasty restores the integrity of the skull base or vertebral canal. The procedure may be performed at the time of initial surgery or as a secondary intervention if postoperative breakdown occurs.

Materials used for the dural substitute are varied. Autologous products such as abdominal fascia or pericardial tissue avoid immunogenicity but require donor site morbidity. Synthetic materials include expanded polytetrafluoroethylene, polytetrafluoroethylene‑coated polypropylene, and collagen matrices. Biologic allografts derived from cadaveric dura or sealants such as fibrin glue are also common. Surgeons select the material based on defect size, location, and patient factors.

Techniques for duraplasty range from direct primary closure for small defects to graft placement for larger resections. The graft is sutured or stapled to the dural edges and may be reinforced with fibrin glue or sealant patches. In spinal duraplasty, a laminotomy or laminectomy site is closed in layers to reduce pseudomeningocele formation.

Complications are uncommon but can include cerebrospinal fluid leak, infection, graft rejection, or aberrant bleeding. Proper patient selection, meticulous technique, and use of reinforced closure methods reduce the incidence of postoperative complications. Duraplasty remains a standard component of neurosurgical and spinal operative protocols, contributing to improved patient outcomes and quality of life.