From Kim-JongSeo Plastic Surgery Clinic.
Plast Reconstr Surg. 2023 Dec 1;152(6):1212-1225. doi: 10.1097/PRS.0000000000010372. Epub 2023 Mar 7.
With the use of sonography, soft-tissue thickness can be measured accurately to assess the volumizing effects of fillers.
In this prospective study, monophasic stabilized hyaluronic acid filler (1 cc) was injected into the dorsal superficial and intermediate laminae of 20 patients using a subdermal scraping fanning injection technique. Sonograms and topographic computer analyses were used to measure soft-tissue thickness, skin roughness, and stratum corneum hydration (SCH) at 1 week and 1, 2, 3, and 6 months.
Hand appearance and skin roughness improved in all patients. Sonography showed that soft-tissue thickness was increased by 4.52 mm (immediately after treatment), 5.52 mm (1 week), 4.89 mm (1 month), 4.25 mm (2 months), 4.08 mm (3 months), and 3.86 mm (6 months) from the pretreatment baseline of 3.20 mm. Roughness was reduced by 15.39 au (16.17%) at 1 month, 21.5 (18.12%) at 2 months, 22.7 (23.91%) at 3 months, and 27.16 (38.12%) at 6 months, indicating improvements in fine wrinkles. SCH also improved during follow-up.
Detailed subdivision of nine layers of hand dorsum was established in this sonography study for the first time. Soft-tissue thickness was increased more than 207% during follow-up, and placement of hyaluronic acid materials was confirmed in the dorsal superficial and dorsal intermediate laminae. Hand appearance and skin roughness improved in all patients. Veins and tendons became less apparent, with volumizing effects. All patients stated that their skin became more moisturized, youthful, and smooth during the follow-up period after only one session of the subdermal scraping, fanning injection technique.
CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.
通过超声检查，可以准确测量软组织厚度，以评估填充物的体积填充效果。
在这项前瞻性研究中，使用皮下刮削扇形注射技术，向 20 名患者的手背浅层和中间层注射单相稳定透明质酸填充剂（1cc）。在治疗后 1 周、1 个月、2 个月、3 个月和 6 个月，使用超声和地形计算机分析测量软组织厚度、皮肤粗糙度和角质层水分（SCH）。
所有患者手部外观和皮肤粗糙度均得到改善。超声检查显示，软组织厚度增加了 4.52 毫米（治疗后即刻）、5.52 毫米（治疗后 1 周）、4.89 毫米（治疗后 1 个月）、4.25 毫米（治疗后 2 个月）、4.08 毫米（治疗后 3 个月）和 3.86 毫米（治疗后 6 个月），从治疗前的 3.20 毫米基线增加。粗糙度在 1 个月时降低了 15.39 au（16.17%），在 2 个月时降低了 21.5（18.12%），在 3 个月时降低了 22.7（23.91%），在 6 个月时降低了 27.16（38.12%），表明细纹得到改善。在随访过程中，SCH 也得到改善。
在这项超声研究中，首次对手背背部分为九层进行了详细细分。在随访过程中，软组织厚度增加了 207%以上，透明质酸材料被证实位于手背浅层和中间层。所有患者的手部外观和皮肤粗糙度均得到改善。静脉和肌腱变得不那么明显，具有体积填充效果。所有患者在接受皮下刮削扇形注射技术仅一次的随访期间，都表示皮肤变得更加水润、年轻和光滑。
临床问题/证据水平：治疗性，IV 级。
