Related Experiment Video
Updated: Dec 26, 2025
Author Spotlight: Insights into Remotely Supervised Neuromodulation Procedure for Phantom Limb Pain
Published on: March 1, 2024
Neuromodulation Techniques in Phantom Limb Pain: A Systematic Review and Meta-analysis
Kevin Pacheco-Barrios1,2, Xianguo Meng1,3, Felipe Fregni1
1Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Boston, Massachusetts, USA.
Neuromodulation techniques, particularly excitatory primary motor cortex stimulation and anodal transcranial direct current stimulation (tDCS), show significant short-term pain reduction in phantom limb pain (PLP) patients. Further research is needed for definitive conclusions on various methods.
Area of Science:
- Neuroscience
- Pain Management
- Rehabilitation Medicine
Background:
- Phantom limb pain (PLP) is a debilitating condition affecting individuals post-amputation.
- Neuromodulation offers potential therapeutic strategies for managing chronic pain conditions like PLP.
- Evaluating the efficacy of diverse neuromodulation techniques is crucial for clinical practice.
Purpose of the Study:
- To systematically evaluate the effects of various neuromodulation techniques on phantom limb pain (PLP) in adults.
- To synthesize evidence from randomized controlled trials (RCTs) and quasi-experimental (QE) studies.
Main Methods:
- Systematic literature search for RCTs and QE studies on neuromodulation for PLP (inception to February 2019).
- Meta-analysis of effect sizes (Hedge's g) and confidence intervals for pain reduction.
- Inclusion of 14 studies (9 RCTs, 5 QE noncontrolled studies).
Main Results:
- Excitatory primary motor cortex (M1) stimulation demonstrated significant pain reduction post-stimulation (ES = -1.36).
- Anodal M1 transcranial direct current stimulation (tDCS) showed significant pain reduction immediately and at one-week follow-up (ES = -1.50 and -1.04, respectively).
- Transcutaneous electrical nerve stimulation (TENS) and deep brain stimulation (DBS) showed high pain reduction rates in noncontrolled studies (67% and 73%, respectively).
Conclusions:
- Evidence suggests excitatory M1 stimulation, specifically anodal M1 tDCS, provides short-term pain relief for PLP.
- Several neuromodulation techniques show promise for managing PLP.
- Limited data necessitates further investigation for more conclusive findings on the long-term efficacy of various neuromodulation approaches.
