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Minimally Invasive Sternocleidomastoid Muscle Thinning for Cervical Feminization.

Rohith M Bhethanabotla1, Jacquelyn K Callander2, Jacqueline A Wulu3

  • 1Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.

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Summary
This summary is machine-generated.

This study introduces a new gender-affirming surgery for lateral neck feminization. Transecting the sternocleidomastoid muscle (SCM) based on the great auricular nerve point (GAP) safely reduces neck girth.

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Area of Science:

  • Plastic Surgery
  • Anatomy
  • Gender-Affirming Care

Background:

  • Lack of established gender-affirming facial surgery for lateral neck feminization.
  • Need for safe and effective surgical techniques to address lateral neck aesthetics in transgender women.

Purpose of the Study:

  • To establish the anatomical relationship between the great auricular nerve point (GAP) and the spinal accessory nerve along the sternocleidomastoid muscle (SCM).
  • To demonstrate the feasibility of SCM transection for lateral neck feminization in transgender individuals.

Main Methods:

  • 14 human anatomical dissections to assess SCM transection safety relative to the GAP and spinal accessory nerve.
  • Surgical documentation of a transgender female patient undergoing SCM transection.

Main Results:

  • A consistent mean distance of 1.01 ± 0.54 cm was found between the GAP and the accessory nerve.
  • SCM transection was successfully performed without neurovascular injury in specimens and the patient.
  • The patient achieved an average neck girth reduction of 7 cm at 2 years post-surgery.

Conclusions:

  • SCM transection, guided by the GAP and accessory nerve relationship, is a viable technique for lateral neck feminization.
  • This method enhances cosmetic satisfaction while minimizing risks of cervical neurovascular injury.
  • Offers a novel surgical option for gender-affirming facial procedures.