17 Spinal Cord Stimulator
17.1 Symptoms and Signs
Chronic back, leg, or arm pain (failed back syndrome or postlaminectomy syndrome)
Sciatica
Reduction of mobility from pain
Pain and discomfort derived from consistent nerve irritation
17.2 Surgical Pathology
Spine benign/malignant trauma
Spine benign/malignant disorder
Vascular benign/malignant lesion
17.3 Diagnostic Modalities
Patient history
Physical examination
Neurologic examination
MRI of spine
CT of spine
X-ray of spine
PET of spine
17.4 Differential Diagnosis
Cord compression
Arachnoiditis
Multiple sclerosis
Spinal cord injury
Failed back surgery syndrome
Complex regional pain syndrome
Stump pain
Angina
Peripheral vascular disease
17.5 Treatment Options
Acute pain control with medications and pain management
Physical therapy and rehabilitation
If asymptomatic or mildly symptomatic with cord compression:
Surgical decompression and fusion of implicated segments if deemed suitable candidate for surgery
If poor surgical candidate with poor life expectancy, medical management recommended
If asymptomatic without cord compression and no relief from other therapies:
Baclofen pump (permanent pump implant that delivers baclofen to spinal fluid, treating spasticity refractory to oral medications and chronic pain associated with moderate to severe spasticity)
Baclofen is a GABAB Receptor agonist, promoting muscle relaxation
Morphine may be used instead of baclofen
Spinal cord stimulation (masks nociception before it reaches the brain, resulting in non perception of pain)
Pain relief varies from person to person
Includes: (1) pulse generator with battery, (2) lead wire with 8 to 32 electrodes, and (3) remote control to adjust settings and turn the device on or off
Need a trial showing 50% pain relief with psychological clearance and no untreated drug addiction noted