Illustration of five tai chi movements. (A) Brush Knee and Twist Steps;

Illustration of five tai chi movements. (A) Brush Knee and Twist Steps;

Full article: Muscle co-contraction and pre-activation in knee and ankle joint during a typical Tai Chi brush-knee twist-step

Effect of Tai Chi on knee pain and muscle strength in middle-aged and older adults with knee osteoarthritis: a randomized controlled trial protocol, BMC Complementary Medicine and Therapies

Brush Knee and Step Forward (Taijiquan Movement), Modern Wushu Wiki

tai chi

Tai Chi Y3D258: Brush Knee to Punch – Wanderings in the Labyrinth

The TAI CHI CHUAN of Yang ChengFu. 85 section Long form

Tai Chi History - Taiji Forum

Tai Chi Moves