12 Questions
What makes the knee relatively stable in the frontal plane?
Its articular geometry and strong collateral ligaments
How were knee movements measured in the study?
Using reflective markers and infrared cameras
How much abduction-adduction movement does the knee have during the first 80% of stance phase?
Minimal and inconsistent
When does approximately 5 degrees of knee adduction occur in most individuals?
During the last 20% of stance phase
What is the average abduction (valgus) of the knee at the time of heel contact?
1.2 degrees
Does the knee alignment change throughout the stance phase?
No
When does the knee typically abducted an additional 5 degrees?
During the swing phase
When does maximum abduction occur in the knee?
When the knee is near its maximum flexion angle
Does the knee return to its slightly abducted position before the next heel contact?
Yes
Are studies using skin-mounted markers generally associated with greater error?
Yes
What is the main reason for the knee's stability in the frontal plane?
Its articular geometry and strong collateral ligaments
What is the main method used to measure knee movements in the study?
Reflective markers and infrared cameras
Study Notes
- The knee is relatively stable in the frontal plane due to its articular geometry and strong collateral ligaments.
- Knee movements were measured in three-dimensions using reflective markers and infrared cameras.
- The knee has minimal and inconsistent abduction-adduction movement during the first 80% of stance phase.
- Approximately 5 degrees of knee adduction occurs in most individuals during the last 20% of stance phase.
- The knee is in an average of 1.2 degrees of abduction (valgus) at the time of heel contact.
- This alignment remains unchanged throughout the stance phase.
- The knee typically abducted an additional 5 degrees during initial swing phase.
- Maximum abduction occurred when the knee was near its maximum flexion angle.
- The knee returned to its slightly abducted position before the next heel contact.
- Studies using skin-mounted markers are generally associated with greater error.
Test your knowledge about knee movements and stability with this quiz! Learn about the knee's articular geometry and strong collateral ligaments that contribute to its stability in the frontal plane. Discover how knee movements are measured using reflective markers and infrared cameras. Explore the minimal and inconsistent abduction-adduction movements during the stance phase and the knee's alignment at heel contact. Test your understanding of the knee's abduction during initial swing phase and its return to its slightly abducted position. Challenge yourself with questions about the errors associated with
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