Archives of physical medicine and rehabilitation
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Arch Phys Med Rehabil · Dec 2007
The S1 "Scotty dog": report of a technique for S1 transforaminal epidural steroid injection.
To report a technique for needle placement by using the bony landmark of the "Scotty dog" on an oblique view for epidural injection of corticosteroid into the S1 foramina. ⋯ Classic description of the S1 spinal nerve block uses an anteroposterior approach to the foramen. Looking for an S1 Scotty dog facilitates predictable visualization of the foramen, medial needle placement with epidural flow of contrast, and simultaneous visualization for needle placement to the L5 foramen.