Segmental Muscle Vibration on Pain in Patients With Primary Cervical Dystonia

\- Physiotherapy (60 minutes): Includes active strengthening of antagonist muscles, mobilization, stretching of cervical-thoracic kinetic chains, proprioceptive control, postural exercises, and body schema modulation. -Occupational Therapy (30 minutes): Focuses on improving proprioceptive, praxis, and spatial control of movements. -SMV (15 minutes): Administered during the last part of each physiotherapy session. Experimental Group: SMV is applied to the trapezius (middle/descending fibers) and quadratus lumborum bilaterally at 80 Hz with an amplitude of 0.5 mm.

Physiotherapy (60 minutes): Includes active strengthening of antagonist muscles, mobilization, stretching of cervical-thoracic kinetic chains, proprioceptive control, postural exercises, and body schema modulation. Occupational Therapy (30 minutes): Focuses on improving proprioceptive, praxis, and spatial control of movements. SMV (15 minutes): Administered during the last part of each physiotherapy session. Control Group: Sham SMV using disconnected terminals produces sound but no vibration, ensuring blinding.