Anatomy & Physiology (6th Edition)
Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Chapter 8, Problem 1CCS

In the previous chapter, you met Kayla Tanner, a 45-year-old mother of four who suffered a dislocated right hip in the bus accident on Route 91. Prior to the Kayla Tanner, a 45-year-old mother of four, suffered a dislocated right hip in a bus accident on Route 91. Prior to performing a closed reduction, the doctors noted that her right thigh was flexed at the hip, adducted, and medially rotated. After the reduction, the hip was put through a gentle range of motion (ROM) to assess the joint. A widened joint space in the postreductionX ray showed that the reduction was not complete, but no bone fragments were visible in the joint space. Mrs. Tanner was scheduled for immediate surgery.

Chapter 8, Problem 1CCS, In the previous chapter, you met Kayla Tanner, a 45-year-old mother of four who suffered a

The surgeons discovered that the acetabular labrum was detached from the rim of the acetabulum and was lying deep within the joint space. The detached portion of the labrum was excised, and the hip was surgically reduced. During the early healing phase (first two weeks), Mrs. Tanner was kept in traction with the hip abducted.

Joints can be classified by structure and by function. How would you structurally and functionally classify the joint involved in the injury in this case?

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If your foot is planted and immoveable (think lug-soled boot on a muddy trail), and you are hit from behind (think mountain biker out of control), which knee ligament is more likely to be torn...the anterior cruciate ligament or the posterior cruciate ligament?  Explain your answer in detail, and in particular, how the impact affects the relative movements of femur and tibia and why the ligament you chose is stretched to the breaking point by this motion.  Think and explain carefully...this stuff is confusing.
During her initial visit with the physical therapist, Mrs. Tanner presented with significant "foot drop" (the inability to dorsiflex the foot when taking a step). Mrs. Tanner was asked to perform a variety of movements with her right lower extremity. The therapist focused her attention on the prime movers and synergists of the hip, knee, and ankle. What are "prime movers" and "synergists"? Explain your answer.
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Anatomy & Physiology (6th Edition)

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