Clavicular Contouring with a Novel Subperiosteal Filler Injection Technique: A Single-Case Study.

[OBJECTIVE] Injectable cosmetic procedures are increasingly popular among beauty seekers as rapid technology and material advancements making it easier to achieve desired results through minimal trauma. The technique of subperiosteal injection, which is not yet introduced to the field of medical esthetics, may achieve more satisfying results. This study confirms the possibility of subperiosteal injection of dermal filler, using the clavicle area as the validation region, and has been validated by ultrasound examinations. This novel injection technique combining sharp and cannula successfully achieves subperiosteal filling injections, aiming to shape clear contours by utilizing subperiosteal filling and addressing the displacement issues of conventionally injected dermal filler, thereby achieving long-term reliable results.

[METHODS] The new technique involves linear limited subperiosteal dissection using a cannula, followed by further expansion of the periosteum through injection pressure to complete the injection of dermal filler and retain it beneath the periosteum.

[RESULTS] The conclusion drawn from clinical observation and ultrasound validation confirms that the dermal filler is indeed injected at the subperiosteal level and provides very stable support. The results at the 6-month follow-up remain ideal.

[CONCLUSION] This subperiosteal injection technique is easy to practice and conductive to promotion. In terms of results, it achieves long-term stable outcomes that traditional injection methods cannot achieve. Although the clavicle area was used as the validation region, this technique can also be applied to many conventional facial injection sites.

[LEVEL OF EVIDENCE IV] This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors https://www.springer.com/00266 .