12 Questions
What is the typical angle of inclination in the frontal plane for an adult?
125°
What is the term for an increased angle of inclination in the frontal plane?
Coxa valga
What is the primary function of the hip during bilateral support of the HAT?
To provide stability to the upper body
What is the effect of coxa valga on the weight bearing of the head of the femur?
Increased weight bearing
What is the effect of coxa vara on the moment arms of gluteus medius and minimus?
Decreased moment arms
In a closed kinematic chain, which part of the body is moving?
The upper body is moving on the leg
At what stage of life is the angle of inclination in the frontal plane typically 150°?
Infancy
What is the name of the kinematic chain where the movement of the leg is on the trunk?
Open kinematic chain
In optimal posture, what is the characteristic of the line of gravity in the coronal plane?
It divides the body into two symmetrical parts
What is the term for a decreased angle of inclination in the frontal plane?
Coxa vara
What is the term for the hip's ability to support the head, arms, and trunk on one leg?
Unilateral support of HAT-L
What is the direction of the external flexion moments in a flexed-knee posture?
Acting around the hip, knee, and ankle joints
Test your understanding of ground reaction force and frontal plane motion in unilateral stance, including normal hip weakness and compensated movements. Explore the concepts outlined in Powers 2010 and Pollard, Clin Biomech, 2010.
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