Chinese Silkvine (Periploca sepium), known as "Xiang Jia Pi" in traditional Chinese medicine (TCM), has been used historically for various purposes, including treatment of rheumatism, joint pain, and general musculoskeletal discomfort. Its traditional application in TCM is mainly to "dispel wind and dampness" and to "strengthen bones and sinews," which loosely translates to supporting the skeletal and muscular systems in TCM theory. However, this is based on traditional use and not on modern clinical or biomedical evidence.

Scientific studies on Chinese Silkvine primarily focus on its anti-inflammatory and analgesic properties, and some in vitro or animal research suggests that extracts may reduce inflammation or modulate immune response. However, there is a lack of robust clinical trials or scientific evidence specifically demonstrating that Chinese Silkvine can strengthen bones, improve bone density, or directly support skeletal health in humans. The rating reflects the fact that the traditional use for bone and joint support is not strongly backed by modern scientific validation. Thus, while it remains a part of traditional herbal formulas for musculoskeletal complaints, its use for supporting the skeletal system should be considered primarily traditional and speculative in the absence of stronger scientific proof.