Related Experiment Videos
[Anatomical basis for the newly developed facelifting]
1Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Beijing 100041.
Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi = Zhonghua Zheng Xing Shao Shang Waikf [I.E. Waike] Zazhi = Chinese Journal of Plastic Surgery and Burns
|March 27, 2001
Summary
This study maps the relationship between the superficial musculoaponeurotic system (SMAS) and facial nerve branches in the midface. Understanding this anatomy is crucial for safe and effective facelifting procedures.
Area of Science:
- Anatomy
- Facial Surgery
- Nerve pathways
Context:
- The superficial musculoaponeurotic system (SMAS) is a key structure in facial anatomy relevant to rhytidectomy.
- Understanding the precise spatial relationship between the SMAS and facial nerve branches is critical for surgical safety.
Purpose:
- To delineate the anatomical relationship between the SMAS and the divisions of the facial nerve within the cheek region.
- To provide anatomical data to guide surgical dissection during facelifting procedures.
Summary:
- Dissection of 12 cadaver heads revealed the SMAS distribution in the midface and its relationship with underlying facial nerve branches.
- Specific findings include the penetration point of the frontal branch and the course of buccal branches relative to the SMAS and cheek fat.
- A consistent zygomatic ramus was identified, with varying innervation patterns observed in the orbicularis oculi and zygomaticus muscles.
Impact:
- The findings offer critical insights for surgeons performing facelifts, emphasizing safe dissection planes relative to the SMAS and zygomatic arch.
- Recommendations include wide SMAS dissection above the parotidomassetric fascia and careful approach to the zygomaticus to avoid facial nerve injury.