We report a rare case of intracanal and extraforaminal disc herniation at L5/S1.
A 30 year-old woman had left low leg pain and motor loss of left M. TA, EHL, Gastrocutaneous and FHL. It was diagnosed as the radiculopathy of L5 and S1. Myelogram and CTM showed only intracanal disc herniation at L5/S1. MRI findings showed evident intracanal disc herniation at L5/S1, but extraforaminal disc herniation unclearly. CTD finding showed intracanal and extraforaminal disc herniation at L5/S1. We performed discectomy with resection of the left facet at L5/S1 and PLIF with the steffy VSP. She had no leg pain and no motor lossseven months postoperatively.
According to extraforaminal disc herniation literature, interacanal and extra-foraminal disc hemiation has been seen in 2 out of 178 cases against extraforaminal disc herniation.