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Laryngeal EMG (Electromyography) Anatomy and Video

see also: Case example EMG guided laryngeal Botox Injection

and Case Example Vocal Tremor Response to Botox

see also: Unilateral Laryngeal Paralysis or Vocal Cord Paralysis

Video

Placement of bipolar hooked wire electrode into the TA muscle via percutaneous trans-cricothyroid membrane puncture with a 25 gauge needle.

After appropriate positioning (neck partially, not fully extended - slightly reclined), landmarks are confirmed by palpation: hyoid, thyro-hyoid,thyroid cartilage and cricoid cartilage (local anesthesia 1% with 1:100,000 already injected superficially).

The index and second finger (left hand) palpate the cricothyroid space and gently push down on the skin to secure the location of needle placement and diminish the distance from the skin to the cricothyroid membrane.

The hooked wire electrodes (two filaments with a 180 bend at their exit from the 25 guage needled) are placed in a subepithelial manner through the skin into either the TA or LCA (through the cricothyroid membrane) or into the CT superficial to the membrane
(see Laryngeal EMG (Electromyography) for placement into specific muscles)

Laryngeal EMG

Return to protocol: Laryngeal EMG (Electromyography)

 Anatomy from cadaver laryngeal dissection

Anatomy from cadaver laryngeal dissection - clearer and larger images available above by clicking on thumbnails