Spinal Cord Stimulation

You may be a candidate if chronic nerve-related pain — such as back and leg pain after spine surgery, CRPS or painful diabetic neuropathy — has lasted months despite physical therapy, medicines and injections, and more surgery is not the right answer. Medicare describes stimulation as a late resort for chronic intractable pain after other treatments have been tried^[1]. You also need a psychological evaluation and realistic goals, and the trial then shows whether it actually helps you.

For carefully selected patients, spinal cord stimulation can meaningfully reduce pain, but it does not help everyone. In a randomized trial of leg pain after back surgery, 48% of patients given stimulation had at least 50% leg pain relief at 6 months, versus 9% on medical care alone^[9]. In painful diabetic neuropathy, 79% had at least 50% relief at 3 months in an open-label trial^[11]. A Cochrane review was less positive for low back pain^[7].

Thin temporary leads are placed through a needle into the epidural space while you are awake or lightly sedated, then connected to a small battery you wear outside the body. You go home and use the system in your normal routine, usually for 5 to 7 days and rarely more than 10^[15], while keeping a pain and activity diary. At the end, the leads are removed in the office without an incision.

Mood, stress, sleep and expectations strongly affect how well a stimulator works, so screening is required. Medicare requires a psychological as well as a physical evaluation before implantation^[1], and New York workers’ compensation requires one before the trial^[2]. It is not a test of whether your pain is “real”; it identifies concerns, such as untreated depression, that should be addressed first.

Most people return to light activity within a few days, but full healing takes about four to six weeks while the leads settle into place^[14]. During that time, avoid bending, twisting, reaching overhead and lifting heavy objects, because these movements can shift the leads. Desk work often resumes sooner than physically demanding jobs; your physician will give you specific limits.

Sleep in any position that keeps pressure off your incisions — usually on your back or on the side opposite the generator. For the first few weeks, avoid twisting when getting in and out of bed: roll onto your side as one unit and push up with your arms. A pillow under or between your knees can help. Ask your physician whether to lower stimulation at night if the sensation keeps you awake.

No — spinal cord stimulation is reversible. The leads and generator can be removed if they stop helping or cause problems, and settings can be reprogrammed without another procedure. Non-rechargeable generators need a short outpatient replacement when the battery runs down. Some people eventually need a lead revision; in one trial included in a Cochrane review, 31% of patients receiving stimulation needed revision surgery within 24 months^[7].

Battery life depends on the model and your settings. Non-rechargeable generators need no charging but are replaced in a short outpatient procedure when they run down; rechargeable ones are charged through the skin and generally last longer. In one long-term study of devices implanted between 1994 and 2018, median battery life was about 3.7 years for non-rechargeable and 7.2 years for rechargeable generators^[12]. Cleveland Clinic notes that most current implant batteries last at least 10 years^[14]. We review charging routines before you choose.

Often yes, but only under specific conditions. Many current systems are labeled “MR Conditional,” meaning an MRI is safe only when the scanner and settings match the device’s labeled conditions^[4]. Some allow full-body scans and others only head or limb scans, and a broken or shifted lead can change that^[8]. If you expect to need regular MRIs, tell us before choosing a system, and always tell the imaging center you have an implant.

The most common problems are lead movement, infection and hardware issues such as a broken lead or generator failure^[13]. They are not rare: in one randomized trial, 32% of patients had a device-related complication within a year^[9], and some complications need another procedure. Serious complications such as spinal cord injury are rare^[14]. Careful blood thinner management and wound care lower the risk.

Medicare and most commercial plans cover spinal cord stimulation when specific criteria are met. Medicare’s national coverage policy, which applies in New York, requires that stimulation be a late resort, that multidisciplinary screening including a psychological evaluation be completed, and that a temporary trial show relief^[1]. Commercial plans usually require prior authorization for the trial and the implant. New York workers’ compensation requires carrier pre-authorization for each step^[2]; no-fault follows its own rules. We verify your benefits first.

Alternatives depend on the source of your pain. For a pinched nerve, an epidural steroid injection may help; for arthritis-type back pain, radiofrequency ablation is an option; and for lumbar spinal stenosis, the MILD procedure may be considered. If pain follows one nerve, peripheral nerve stimulation avoids a spinal implant, and for neuropathy, non-invasive scrambler therapy is another choice.