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Knee Part 2 (Muscles of the Knee) (Exam 3)
Terms in this set (16)
What are the five muscles that are categorized as knee extensors?
Tensor fascia latae
What are the sum of forces of the rectus femoris, vastus lateralis, and patellar tendon?
The sum of forces is lateral
What balances the lateral pull of the quadriceps?
The horizontal pull by the vastus medialis oblique
Define Q angle.
Estimates the lateral pull of the quadriceps.
What degree range of Q angle is considered normal?
10 - 20 degrees
Do women or men have a larger Q angle?
Women have a larger Q angle.
As the Q angle increases the _______ the lateral pull is on the patella which could result in what?
greater; which could result in anterior knee pain.
In normal alignment, the Q angle is usually equal to what?
Valgus angle of the knee
What does lateral torsion do to the Q angle? To the valgus angle?
Lateral torsion increase the Q angle but the valgus angle remains unchanged
What are the six muscles that make up the knee flexors?
What muscles specifically make up the hamstring and are the primary knee flexors?
Biceps Femoris longus and brevis
What is the function of the hamstrings?
Help to slow knee extension and hip flexion (in the late swing phase of the gait cycle)
Contraction resulting in muscle shortening
Contraction in the presence of resistance force resulting in elongation of a muscle.
What occurs in relation hamstring tightness?
Pulls pelvis into posterior pelvic tilt, flattening the lumbar spine.
When is the moment arm of the leg the largest?
When the leg is fully extended the extensor force is the greatest. (Smaller the knee angle is = greater the extensor force)
This set is often in folders with...
Exam 2 Prep
Lumbar Spine Part 1 (Exam 3)
Lumbar Spine Part 2 (Exam 3)
Posture & Scoliosis (Exam 3)
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