Fig. 1From: Endoscopic release of congenital muscular torticollis with radiofrequency in teenagersThe SCM muscle was placed under tension by extension of the neck and rotation of the head toward the unaffected side. The anteromedial portal is placed at 3 cm inferior and 1.5 cm medial to the sternoclavicular joint of the affected side, and the working portal is placed at 3 cm inferior to the midpoint of the clavicleBack to article page