AUTHOR=Yu Wen-Ying , Liu Jing , Lin Ze-Hao , Liu Hong , Zhang Liang-Zhi , Feng Xiang-Long , Xiu Zhong-Biao TITLE=Characterization of rectus femoris lesions in knee osteoarthritis at different stages and the effect of ultrasound-guided acupotomy JOURNAL=Frontiers in Physiology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2024.1496425 DOI=10.3389/fphys.2024.1496425 ISSN=1664-042X