GROSS ANATOMY
ARM FOREARM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The joint is the sight of the rotation of the radius around the head of the ulnar.
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MRJ:medial radioulnar joint
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DRJ:distal radioulnar joint
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PRJ:proximal radioulnar joint
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None of the above
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Explanation:
Detailed explanation-1: -The distal radioulnar joint is a synovial joint between the distal ends of the radius and ulna. This is a uniaxial pivot joint that allows the movements in one degree of freedom; pronation-supination.
Detailed explanation-2: -The DRUJ is a pivot joint between the distal radius and ulna that allows forearm rotation in conjunction with grasping function of the hand. Its osseous components are the radial sigmoid notch; the ulnar head, consisting of the hub and seat; the fovea; and the styloid (Fig 1) (1).
Detailed explanation-3: -The primary role of the distal radioulnar joint is to stabilize the articulation of the radius around the stationary ulna during pronation and supination.
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