Effectiveness of Transcutaneous Electrical Nerve Stimulation and Interferential Current in Chronic Neck Pain

The aim of this study was to determine and compare the efficacy of transcutaneouselectrical nerve stimulation (TENS), interferential current (IFC), and sham therapy inpatients with chronic neck pain.A total of 57 patients diagnosed with chronic mechanical neck pain were included in thestudy. Patients were randomized into three groups. Each group received 10 sessions ofphysiotherapy over a two‐week period: one group received conventional TENS, one groupreceived IFC, and one group received sham therapy. Pain was assessed using the VisualAnalog Scale (VAS), disability and functionality using the Copenhagen Neck DisabilityIndex, quality of life using the SF‐36, depression using the Beck Depression Inventory(BDI), and pain characteristics using the SF‐McGill Pain Questionnaire.