Knee rock, footwork with the one or both knees on the ground.
Knee rock originally referred to dropping the knees in footwork patterns—a kind of kneewalk. Wizard Wiz incorporated "knee rocking" into his footwork in the late 1970s, and others such as Spy and Trac 2 may have as well . The Rock Steady Crew can be seen doing this knee rock in the early 1980s . Knee swipes were popular in Europe in the 1980s and 1990s . Storm's Footwork Fundamentals describes several knee rocks in the chapter "No Hand Footwork" .
List of Knee Rocks
Slide on one or both knees.
Spin on one or both knees.
No Hand Sweep
Front sweep without support from the arms, ending on the knees.