Trainer position
Stand on the client's left (the side shown in the 3D) with your feet apart front to back, at a height that suits the table. Move by shifting your body weight rather than holding with the arms alone.
Contact and support
Press the front of the knee with the palm and support the back of the lower leg from underneath with the other hand.
Hand placement in 3D: front of the knee, back of the lower leg (near the ankle)
Stabilisation
Rest the straight leg on the table. If it lifts, reduce the range.
Compensation
Lifting of the other leg, posterior pelvic tilt, pinching at the front of the hip.
Easier option
Reduce the range and let the weight of the leg or arm rest on a cushion or the table. Go back to checking a pain-free starting position.
Cues and consent
Tell the client where you will touch and which way you will move, and say, 'Tell me straight away if you feel any pain or discomfort.' Confirm consent before touching and before moving.
Stop criteria
Return to the starting position immediately if the client reports sharp pain, numbness, weakness, a pinching feeling in the joint, dizziness, shortness of breath or anxiety, or asks to stop.