{"id":90109,"date":"2026-07-16T09:00:00","date_gmt":"2026-07-16T06:00:00","guid":{"rendered":"https:\/\/desu.tr\/?p=90109"},"modified":"2026-07-16T09:00:00","modified_gmt":"2026-07-16T06:00:00","slug":"spinal-dural-repair-durotomy-collagen-graft","status":"publish","type":"post","link":"https:\/\/desu.tr\/tr\/spinal-dural-repair-durotomy-collagen-graft","title":{"rendered":"Spinal Dural Repair: Closing Durotomy with Collagen Grafts"},"content":{"rendered":"

Spinal dural repair<\/strong> presents a different mechanical problem from cranial closure. The dural tube is narrow, access is often limited, and postural pressure changes act on the repair from the first day of mobilisation. Desu Medical manufactures collagen dural grafts<\/a> from more than 99.9% pure Type I bovine collagen for exactly these conditions, where a membrane must seal reliably and then remodel into host tissue.<\/p>\n

When Spinal Dural Repair Is Needed<\/h2>\n

Incidental durotomy during decompression is the most frequent trigger, particularly in revision surgery and in patients with ossified ligament or severe stenosis. Planned durotomy for intradural tumour access is the second. Trauma, dural ectasia and cerebrospinal fluid fistula complete the picture.<\/p>\n

In each case the surgeon faces the same requirement: restore a watertight dural tube without narrowing the thecal sac or leaving material that will complicate later imaging.<\/p>\n

Mechanical Demands of the Spinal Environment<\/h2>\n

Cerebrospinal fluid pressure in the lumbar region rises significantly when the patient sits or stands. Consequently, a repair that appears sound in theatre may be tested far harder within twenty-four hours. The graft material must therefore hold under cyclic pressure, not merely at rest.<\/p>\n

Tensile strength matters for a second reason. In tight corridors the membrane is manipulated with long instruments, often at awkward angles. A material that fragments or tears during placement creates its own problem. Desu membranes resist tearing during suturing and manipulation and maintain their properties in contact with blood and irrigation.<\/p>\n

Working in a Narrow Field<\/h3>\n

Access in minimally invasive and tubular approaches is measured in millimetres. DECOLL<\/a> offers dual-surface usability, so no orientation step is required when the membrane is delivered through a narrow corridor. Moreover, it resists curling, which is the failure mode that most often forces a surgeon to withdraw and reposition.<\/p>\n

Sizing for Spinal Cases<\/h2>\n

Most spinal durotomies are linear and modest in area. The smaller DECOLL formats, DCL2525 (2.5 x 2.5 cm) and DCL5050 (5 x 5 cm), typically provide adequate overlap without excess bulk in the canal. Larger defects, including those after intradural tumour resection, may call for DCL7575. The graft should extend beyond the defect margins onto stable dura, but excessive bulk in a confined canal is undesirable.<\/p>\n

Onlay and Sutured Approaches<\/h2>\n