To begin with, the following basic knee strengthening exercises should be performed approximately 10 times, 3 times daily. As your knee strength improves, the exercises can be progressed by gradually increasing the repetitions and strength of contraction provided they do not cause or increase pain.
Static Inner Quadriceps Contraction
Tighten the muscle at the front of your thigh (quadriceps) by pushing your knee down into a towel (figure 1). Put your fingers on your inner quadriceps (VMO – vastus medialis obliquus) to feel the muscle tighten during contraction. Hold for 5 seconds and repeat 10 times as hard as possible pain free.
Quads Over Fulcrum
Begin this exercise lying on your back with a rolled towel or foam roll under your knee and your knee relaxed (figure 2). Slowly straighten your knee as far as possible tightening the front of your thigh (quadriceps). Hold for 5 seconds and repeat 10 times as hard as possible pain free.
Static Hamstring Contraction
Begin this exercise in sitting with your knee bent to about 45 degrees (figure 3). Press your heel into the floor tightening the back of your thigh (hamstrings). Hold for 5 seconds and repeat 10 times as hard as possible pain free.
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