Characterization of rectus femoris lesions in knee osteoarthritis at different stages and the effect of ultrasound-guided acupotomy - Yu, Wen-Ying; Liu, Jing; Lin, Ze-Hao; Liu, Hong; Zhang, Liang-Zhi; Feng, Xiang-Long; Xiu, Zhong-Biao (Frontiers in Physiology, 2025)