PMID- 36130064 OWN - NLM STAT- MEDLINE DCOM- 20230405 LR - 20230503 IS - 1526-4637 (Electronic) IS - 1526-2375 (Linking) VI - 24 IP - 4 DP - 2023 Apr 3 TI - Effects of Percutaneous and Transcutaneous Electrical Nerve Stimulation on Endogenous Pain Mechanisms in Patients with Musculoskeletal Pain: A Systematic Review and Meta-Analysis. PG - 397-414 LID - 10.1093/pm/pnac140 [doi] AB - OBJECTIVES: The main aim was to determine the effects of percutaneous electrical nerve stimulation (PENS) and transcutaneous electrical nerve stimulation (TENS) on endogenous pain mechanisms in patients with musculoskeletal pain. DESIGN: A systematic review and meta-analysis. METHODS: The search was conducted on March 1, 2022, in the EMBASE, CINAHL, PubMed, PEDro, Cochrane Library, Web of Science, Medline, and SCOPUS databases. Randomized controlled trials comparing the use of transcutaneous or percutaneous electrostimulation with a placebo, control group, or standard treatment in patients with musculoskeletal pain were included. Outcome measurements were quantitative sensory testing somatosensory variables like pressure pain threshold (PPT), conditioned pain modulation, and temporal summation of pain. The pooled data were evaluated in Review Manager 5.4. RESULTS: Twenty-four randomized controlled trials (n = 24) were included in the qualitative analysis and 23 in the meta-analysis. The immediate effects of PENS and TENS on local PPTs were significant, with a moderate effect size (standardized mean difference [SMD] 0.53; 95% confidence interval [CI]: 0.34 to 0.72; P < 0.00001). When only studies with a lower risk of bias were analyzed, the heterogeneity decreased from I2 = 58% (P < 0.00001) to I2 = 15% (P = 0.01), and a decrease in the overall effect was observed (SMD 0.33; 95% CI: 0.7 to 0.58). The short-term effects on local PPTs were not significant when compared with the control group (P = 0.13). The mid-term effects on local PPTs were significant, showing a large effect size (SMD 0.55; 95% CI: 0.9 to 1.00; P = 0.02). The immediate effects on conditioned pain modulation were significant, with a large effect size (SMD 0.94; 95% CI: 0.48 to 1.41; P < 0.0001). CONCLUSION: PENS and TENS have a mild-moderate immediate effect on local mechanical hyperalgesia in patients with musculoskeletal pain. It appears that these effects are not sustained over time. Analyses suggest an effect on central pain mechanisms producing a moderate increase in remote PPT, an increase in conditioned pain modulation, but further studies are needed to draw clearer conclusions. CI - (c) The Author(s) 2022. Published by Oxford University Press on behalf of the American Academy of Pain Medicine. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Rodriguez Lagos, Leonardo AU - Rodriguez Lagos L AD - Escuela Internacional de Doctorado, Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcon, Spain. FAU - Arribas-Romano, Alberto AU - Arribas-Romano A AD - Escuela Internacional de Doctorado, Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcon, Spain. AD - Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain. FAU - Fernandez-Carnero, Josue AU - Fernandez-Carnero J AUID- ORCID: 0000-0002-1314-624X AD - Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain. AD - Motion in Brains Research Group, Institute of Neuroscience and Sciences of the Movement (INCIMOV), Centro Superior de Estudios Universitarios La Salle, Universidad Autonoma de Madrid, Madrid, Spain. AD - Grupo Multidisciplinar de Investigacion y Tratamiento del Dolor, Grupo de Excelencia Investigadora URJC-Banco de Santander, Madrid, Spain. AD - La Paz Hospital Institute for Health Research, IdiPAZ, Madrid, Spain. FAU - Gonzalez-Zamorano, Yeray AU - Gonzalez-Zamorano Y AD - Escuela Internacional de Doctorado, Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcon, Spain. AD - Grupo de Investigacion en Neurorrehabilitacion del Dano Cerebral y los Trastornos del Movimiento (GINDAT), Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Pozuelo de Alcorcon, Madrid, Spain. FAU - Laguarta Val, Sofia AU - Laguarta Val S AD - Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain. LA - eng PT - Journal Article PT - Meta-Analysis PT - Systematic Review PL - England TA - Pain Med JT - Pain medicine (Malden, Mass.) JID - 100894201 SB - IM MH - Humans MH - *Transcutaneous Electric Nerve Stimulation MH - *Musculoskeletal Pain/therapy MH - *Neuralgia MH - Control Groups MH - Hyperalgesia OTO - NOTNLM OT - Conditioned Pain Modulation OT - Electroacupuncture OT - Musculoskeletal Pain OT - Percutaneous Electrical Nerve Stimulation OT - Pressure Pain Thresholds OT - Transcutaneous Electrical Nerve Stimulation EDAT- 2022/09/22 06:00 MHDA- 2023/04/05 06:42 CRDT- 2022/09/21 14:43 PHST- 2022/07/26 00:00 [received] PHST- 2022/09/05 00:00 [revised] PHST- 2022/09/07 00:00 [accepted] PHST- 2023/04/05 06:42 [medline] PHST- 2022/09/22 06:00 [pubmed] PHST- 2022/09/21 14:43 [entrez] AID - 6706814 [pii] AID - 10.1093/pm/pnac140 [doi] PST - ppublish SO - Pain Med. 2023 Apr 3;24(4):397-414. doi: 10.1093/pm/pnac140.