A lot of medical sutures are materials made from synthetic biodegradable polymers that allow for use within the body. A commonly used suture, Trisorb®, is made from polyglycolic acid (PGA). To address the shortcomings of PGA, Vicryl™ is made from polylactic-co-glycolic acid (PLGA). PDS™ is produced using polydioxanone (PDO), while Prolene™ is made from polypropylene (PP). Lifting threads are also made from synthetic biodegradable polymers and are classified as medical devices manufactured for lifting purposes. Depending on their components and manufacturing methods, these threads exhibit different characteristics and properties. Since these various types of threads are inserted into the human body, a fundamental understanding of biomaterials is essential, particularly an understanding of polymers, to comprehend the threads used for lifting.