Spinal Cord Stimulator (SCS): How It Relieves Chronic Pain
A spinal cord stimulator (SCS) is an implanted device for chronic pain unresponsive to conventional treatments.
Components
- Neurostimulator: Small pulse generator implanted under skin (abdomen/buttocks).
- Electrodes: Placed in epidural space over spinal cord.
Mechanism
Mild electrical signals mask pain signals traveling to the brain, replacing pain with a tingling sensation (paresthesia) in the painful area. Newer “paresthesia-free” modes are also available.
Indications
- Chronic back, neck, or leg pain
- Complex regional pain syndrome (CRPS)
- Failed back surgery syndrome
- Neuropathic pain
Procedure & Considerations
Implantation requires a trial period (usually 1 week) to assess efficacy. Permanent implantation involves minor surgery under sedation/general anesthesia. Risks include infection, lead migration, and device malfunction. Discuss benefits vs. risks with a pain specialist.
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