Fig 4: Limited dorsal myeloschisis (LDM) defect with lumbar crater-type flat (nonsaccular) resection. A, B: Ellipse of resected skin crater and subcutaneous tract passing through lumbodorsal fascia defect. C: An intradural exposure demonstrating cord-stalk union and stalk stimulation. D: dissection of stalk flush with cord surface. E: coagulating the filum, F: stimulating the cauda equina rootlets