Spinal cord stimulation (SCS) is an implantable neuromodulation treatment for selected chronic pain conditions that have not improved adequately with appropriate non-surgical or surgical care. Leads placed near the spinal cord deliver mild electrical impulses that modify pain signals, while a pulse generator powers the system. SCS does not repair a damaged disc, remove nerve compression or cure the source of pain. Its purpose is to reduce selected neuropathic pain and improve function or quality of life. Careful assessment is essential because not every type of back or limb pain responds to stimulation.

Depending on the device indication and clinical evaluation, SCS may be considered for chronic neuropathic back or leg pain, persistent spinal pain after previous surgery, complex regional pain syndrome, selected painful diabetic neuropathy or other difficult-to-manage limb pain. Active structural compression that needs surgery must be assessed separately.

Evaluation reviews the diagnosis, previous treatments, medicines, imaging, function, sleep, mental health, infection risk and treatment goals. Psychological assessment may be recommended because mood, coping and expectations can influence long-term results.

Trial stimulation

Most patients undergo a temporary trial before permanent implantation. Trial leads are placed and connected to an external stimulator for a defined period. The patient records pain relief, activity, sleep and medication use. A successful trial is not judged by pain score alone; meaningful functional improvement and an acceptable stimulation experience matter.

If the trial does not provide useful benefit, the temporary leads are removed and other pain-management options are discussed. If it is successful, the patient may proceed to permanent implantation after review of risks and goals.

Permanent implantation and programming

During permanent implantation, one or more leads are positioned and connected to a pulse generator placed under the skin. The system is programmed and adjusted over follow-up visits. Some devices create a tingling sensation, while other programmes may operate without noticeable sensation.

Patients receive instructions about wound care, temporary movement restrictions, charging if needed, use of the controller, travel and security systems, and precautions around MRI or other procedures. The exact rules depend on the implanted device.

Benefits and risks

SCS may reduce pain and improve activity in selected patients, but results vary and complete pain relief is uncommon. Risks include infection, bleeding, pain at the implant site, lead movement or breakage, loss of benefit, unwanted stimulation, device failure and the need for revision or removal.

Long-term care combines device review with physical rehabilitation, sleep and mental health support, medication review and management of the underlying condition.