The WSRS is a valid and reliable instrument for quantitative assessment of facial skin folds, with good inter- and intra-observer consistency. By allowing objective and reproducible grading of data, the WSRS should prove a useful clinical tool for assessi
Objective To investigate the efficacy of poly (L-lactic acid) application in the rejuvenation of hands, and to analyzethe safety of its application. Methods two subjects with aging problems of the hands were given subcutaneous injections of poly-L-lactic
聚乳酸材料凭借其独特的优势在美容医学中已得到了越来越广泛的应用，然而其不同异构体由于其体内代谢产物不同，在疗效和安全性方面也不同。因此，本文对聚左旋乳酸和右旋乳酸材料的区别以及其在临床中的应用做一综述，以期为科研和临床工作中不同的需求提供参考依据。