Knee Extension Tool

POSITIONING/ PHASE ONE

• Sit in chair with knees flexed over side.
• ankle harness should be around the ankle.
• bulb of the tool should be at knee.

UP PHASE

• left leg up by straightening (extending) the knee.
• Knee Joint:
• rectus femoris in sagittal plane, concentrically, to extend knee.
• vastus intermedius in sagittal plane, concentrically, to extend knee.
• vastus lateralis in sagittal plane, concentrically, to extend knee.
• vastus medalis in sagittal plance, concentrically, to extend knee.

DOWN PHASE

• slowly put leg back down by bending (flexing) the knee.
• Knee Joint:
• Bicep femoris in sagittal plane, eccentrically, to control flexing of the knee.
• popiteus in sagittal plane, eccentrically, to control flexing of the knee.
• semimembranous in sagittal plane, eccentrically, to control flexing of the knee.
• semitendinous in sagittal plane, eccentrically, to control flexing of the knee.

Drill/ Stretch:

The following is a home exercise one could do to stretch their hamstring muscle that is used for the knee extension tool.