(From Hamilton and Luttgens) Have a subject lie supine with elbows holding them up on a table with knees at the edge and the lower legs (knee)…

1. (From Hamilton and Luttgens) Have a subject lie supine with elbows holding them up on a table with knees at the edge and the lower legs (knee) hanging down at approximately 45 degrees. Ask the subject to extend one leg at the knee while you attempt to stop the motion by applying strong resistance anteriorly, just above the ankle. Note the amount of resistance you have to apply. Now ask the subject to sit up and flex the trunk well forward from the hips. Extend at the knee again against resistance.

Which action was easier for the subject sitting on the table? Explain in regards of the L/T relationship only.

Explain:

Now ask the subject to lie completely supine and flex the knee to 45 degrees while you attempt to stop the movement by resisting posteriorly, just above the ankle. Now ask the subject to sit up and flex the knee again against resistance.

Which action was easier for the subject sitting on the table? Explain in regards of the L/T relationship only.

Explain: