Post-Treatment Displacement of Facial Soft Tissue Fillers-A Retrospective Ultrasound-based Investigation of 382 Zygomatic Regions.

Background: Clinical and ultrasound experience has revealed that after soft tissue injections of the lateral cheek, the filler may displace from the zygoma to the caudal temporal area.

Objective: To obtain more data to provide insight into product distribution when soft tissue fillers are injected in the zygomatic region.

Methods: Two hundred patients were examined with facial ultrasound imaging of the zygomatic and temporal region.

Dynamic ultrasound evaluation of body fillers and biostimulators in the buttocks of fresh-frozen specimen.

Background: Ultrasound imaging is a useful tool to study the injection of fillers and biostimulators in the body.

Objective: Sonographically evaluate real-time injections of fillers and biostimulators and describe their behavior in the subcutaneous tissue of the buttocks of fresh-frozen specimen.

Methods: injection of two brands of high-density hyaluronic acid (HA), one brand of calcium hydroxyapatite (CaHA), one brand of hybrid injectable (CaHa + HA), one brand of polycaprolactone (PCL) and three brands of poly-l-lactic acid (PLLA) were performed in the subcutaneous tissue of the gluteal region under ultrasonography visualization on a fresh-frozen specimen.