10 Questions
How many degrees of freedom does the elbow joint have?
One, allowing flexion and extension in the sagittal plane
How many major ligaments are directly associated with the elbow joint?
2
Which type of joint permits rotation for supination and pronation?
Diarthrodial uniaxial joints of the pivot type
How many muscles are directly associated with the proximal & distal radioulnar joints?
4
What type of motion occurs at the humeroulnar joint?
Sliding motion of the ulnar trochlear ridge on the humeral trochlear groove
How many degrees of freedom does the radioulnar joint have?
Two
How many muscles are directly associated with the humeroradial joint?
None
How many ligaments are associated with the proximal & distal radioulnar joints?
6
What type of joint is the elbow joint considered to be?
Modified or loose hinge joint
What type of motion occurs at the humeroulnar joint?
Sliding motion of the ulnar trochlear ridge on the humeral trochlear groove
Study Notes
Elbow Joint Characteristics
- The elbow joint has 1 degree of freedom.
Ligaments Associated with the Elbow Joint
- There are 3 major ligaments directly associated with the elbow joint.
Rotational Joint Motion
- The proximal radioulnar joint permits rotation for supination and pronation.
Muscles Associated with Radioulnar Joints
- There are 4 muscles directly associated with the proximal and distal radioulnar joints.
Motion at the Humeroulnar Joint
- Hinge motion occurs at the humeroulnar joint.
Degrees of Freedom at the Radioulnar Joint
- The radioulnar joint has 1 degree of freedom.
Muscles Associated with the Humeroradial Joint
- There are 2 muscles directly associated with the humeroradial joint.
Ligaments Associated with Radioulnar Joints
- There are 2 ligaments associated with the proximal and distal radioulnar joints.
Classification of the Elbow Joint
- The elbow joint is considered to be a hinge joint.
Motion at the Humeroulnar Joint
- Hinge motion occurs at the humeroulnar joint.
Test your knowledge of the biomechanics of the elbow joint including its complex structure, range of motion, and functionality. Explore the degrees of freedom, types of joints involved, and the specific movements associated with the elbow joint.
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