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Injection techniques
Injection techniques
There are multiple acceptable injection techniques, and selecting the most appropriate is often a question of provider preference and experience. Some anatomic locations and fillers are more amenable to particular techniques as described below.6
Serial puncture technique: Small aliquots of filler are injected close together so that
they integrate continuously along a rhytid or fold. Post-injection massage further facilitates this blending.
Linear threading technique: The full length of the needle is introduced dermally or
subcutaneously, and filler injected linearly either retrograde (as the needle is withdrawn) or anterograde (as the needle is inserted), which creates a plane of blunt dissection.
Cross-hatching or radial injection technique: Regularly spaced, linear threads
created by injecting in more than one direction to form a grid pattern.
Fanning technique: The needle is inserted at a single site then passed multiple times
in different directions without fully withdrawing the tip from the skin.
Depot injection techniques: Boluses of filler are injected along the periosteum,
usually to correct volume deficiency in the temporal, zygomatic cheek, and chin areas. Postprocedural massage helps prevent nodularity and smooth contour irregularities.
Historically, augmentation focused on directly filling folds, but there is now an emphasis on facial volumizing to replace the soft tissue and bone loss that occurs with age or photodamage. Furthermore, this volumizing effect indirectly smoothens wrinkles and fine lines.7