GROSS ANATOMY
UPPER LIMB JOINTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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articular circumference of ulna and ulnar notch of radius
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articular circumference of radius and radial notch of ulna
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neck of radius and trochlear notch of ulna
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neck of radius and radial notch of ulna
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Detailed explanation-1: -The lateral convex articular surface of the head of the ulna articulates with the ulnar notch of the distal radius to form the distal radioulnar joint.
Detailed explanation-2: -The head of Ulna has convex articular surface on its lateral side inorder to articulate with ulnar notch of radius.It forms the distal radio-ulnar joint.
Detailed explanation-3: -The proximal radioulnar joint is a pivot type of synovial joint, which consists of the head of the radius articulating with the radial notch of the ulna.
Detailed explanation-4: -The articular circumference (or radial or circumferential articulation) is the distal, lateral, round articulation that conforms to the ulnar notch of the radius in the same way that the radial head conforms to the radial notch of the proximal ulna.