BACKGROUND: Glabellar wrinkle corrections are usually performed by injecting botulinum toxin and hyaluronic acid fillers. The glabella is one of the most dangerous locations for filler injection because of possible visual complications. OBJECTIVE: The objective of this study was to use Doppler ultrasound to determine the anatomical relationship between glabellar wrinkles and the supratrochlear artery pathway, perform safe hyaluronic acid filler injection for correcting glabellar wrinkles, and determine the efficacy of the procedure. METHODS: From January 2019 to July 2019, 42 patients (74 glabellar wrinkle lines: 32 bilateral and 10 unilateral wrinkles) were evaluated. Glabellar wrinkle lines were corrected by using hyaluronic acid filler. Doppler ultrasound was used to avoid the supratrochlear artery. RESULTS: Among the 74 wrinkle lines, the supratrochlear arteries were located at the glabellar wrinkle lines (30, 41%) and lateral to the glabellar wrinkle lines (44, 59%). In 44 cases, fillers were injected into the subdermal layer of the glabellar wrinkle lines. In patients whose supratrochlear artery was located at the glabellar wrinkle lines (n=30), the artery was located at the deep subcutaneous layer in 24 and at the subdermal layer in 6; thus, filler injection was not performed. CONCLUSION: The supratrochlear artery may be located at the glabellar wrinkle lines, but not in all cases. When performing glabellar wrinkle correction, Doppler ultrasound can be used to confirm the location of the supratrochlear artery before filler injection, which helps in avoiding vascular complications.
BACKGROUND: Glabellar wrinkle corrections are usually performed by injecting botulinum toxin and hyaluronic acid fillers. The glabella is one of the most dangerous locations for filler injection because of possible visual complications. OBJECTIVE: The objective of this study was to use Doppler ultrasound to determine the anatomical relationship between glabellar wrinkles and the supratrochlear artery pathway, perform safe hyaluronic acid filler injection for correcting glabellar wrinkles, and determine the efficacy of the procedure. METHODS: From January 2019 to July 2019, 42 patients (74 glabellar wrinkle lines: 32 bilateral and 10 unilateral wrinkles) were evaluated. Glabellar wrinkle lines were corrected by using hyaluronic acid filler. Doppler ultrasound was used to avoid the supratrochlear artery. RESULTS: Among the 74 wrinkle lines, the supratrochlear arteries were located at the glabellar wrinkle lines (30, 41%) and lateral to the glabellar wrinkle lines (44, 59%). In 44 cases, fillers were injected into the subdermal layer of the glabellar wrinkle lines. In patients whose supratrochlear artery was located at the glabellar wrinkle lines (n=30), the artery was located at the deep subcutaneous layer in 24 and at the subdermal layer in 6; thus, filler injection was not performed. CONCLUSION: The supratrochlear artery may be located at the glabellar wrinkle lines, but not in all cases. When performing glabellar wrinkle correction, Doppler ultrasound can be used to confirm the location of the supratrochlear artery before filler injection, which helps in avoiding vascular complications.