Table2 Acupuncture method, selected acupuncture points and exercise mode

Ding [27]

Electroacupuncture, 5 main points,Yanglingquan(GB34),Liangqiu(ST34),

Zusanli(ST36), Neixiyan(EX-LE4) and Dubi(ST35) + Yijinjing

Jin [19]

Electroacupuncture, 7 main points, Dubi(ST35), Neixiyan(EX-LE4),Xuehai(SP10), Liangqiu(ST34), Yanglingquan(GB34), Zusanli(ST36) and Yinlingquan(SP9) + 

Quadriceps function exercises

Li [28]

Acupuncture, 5 points, Heding (EX-LE2), Dubi (ST35), Neixiyan (EX-LE4), Yinlingquan (SP9) and Yanglingquan (GB34) + Isokinetic eccentric exercise

Lin [20]

Acupuncture, 1 point, Chize(LU5) + Knee function exercises

Liu [21]

Acupuncture, 2 points, Neixiyan(EX-LE4) and Waixiyan(ST35) + Isometric exercise

Liu [22]

Floating acupuncture, Ashi points, + Knee joint strength training

Wang [23]

Acupuncture, 12 points, bilateral Pishu(BL20), bilateral Shenshu(BL23),

Guanyuan(RN4), Zusanli(ST36), Neixiyan(EX-LE4), Dubi(ST35), Xuehai(SP10), Liangqiu(ST34), Yanglingquan(GB34) and Yinlingquan(SP9) + Guided training

Wang [24]

Acupuncture, 9 points, Neixiyan(EX-LE4), Waixiyan(ST35),Heding(EX-LE2), Liangqiu(ST34), Xuehai(SP10), Yinlingquan (SP9), Yanglingquan (GB34), Zusanli(ST36) and Dazhu(BL11) + Knee flexion and extension exercises

Wang [9]

Acupuncture, 20 points, Dubi (ST35), Neixiyan (EX-LE4),Xiyangguan(GB33),

Ququan(LR8),Liangqiu(ST34), Xuehai(SP10), Yinlingquan (SP9), Heding(EX-LE2),

Yanglingquan (GB34),Xiyan(EX-LE5) (All acupuncture points are bilateral) + Walking and squatting

Wu [25]

Acupuncture, 4 points, Xuehai(SP10), Liangqiu(ST34), Yanglingquan(GB34) and Yinlingquan(SP9) + Squatting

Zheng [26]

Acupuncture, 4 points, Xuehai(SP10), Liangqiu(ST34), Neixiyan(EX-LE4), Waixiyan(ST35), Yanglingquan (GB34) and Zusanli(ST36) + Baduanjin