Deep Knee Bending Case Study

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Deep Knee Bends: Measuring Knee Stress with a Mechanical Model Questions • How does the angle of the knee joint affect the strain put on the tendons and vice versa? • How does the force produced by a spring change as the spring is lengthened? • What happens if you exceed the elastic limit of the spring? • How should people exercise (squat) properly without putting too much pressure on the knees? • How can prosthetic limbs and artificial joints help people with disease or injury to lead a normal life? • What is patellar tendonitis/Jumper’s knee and how does it affect ballet dancers and volleyball players? Hypothesis If a person does a grande plié (knee is almost fully bent), then there will be more tension on the patellar tendon than if a…show more content…
Mark and drill pilot holes for the four sets of casters on the "hip" piece. Then mount the casters on the "hip" piece. This piece will be needed to determine the correct spacing for the vertical side supports. 2. The vertical support is made of three wooden pieces: a. The back of the vertical support has dimensions 20 x 6-1/4 x 3/4 in. b. The two side pieces of the vertical support have dimensions 20 x 2-1/2 x 3/4 in. c. Use wood screws to attach the U-channel pieces to the side pieces. d. Use wood screws to attach the side pieces to the back (drive screws through the back and into the side pieces). Use the "hip" piece with the casters mounted on it to make sure that the side supports are set at the correct distance. The casters should roll easily in the tracks made by the U-channels. 3. Mark and drill pilot holes for the four sets of hinges in the "hip," "femur," "tibia," "foot," and base pieces. 4. Mark and drill pilot holes for the guitar tuning mechanism (mounted on the back side of the "tibia"). A drill for clearance will be needed to hole for the tuning peg. It sticks through to the front side of the

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