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Question

Structure responsible for formation of semilunar notch is

A
Olecranon process of humerus
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B
Olecranon process of femur
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C
Olecranon process of radius ulna
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D
Olecranon process of tibia fibula
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Solution

The correct option is C Olecranon process of radius ulna
The semilunar notch or the trochlear notch as it is commonly referred to is a greater sigmoid cavity formed by a large depression in the upper extremity of the ulna. This fits the trochlea of the humerus and becomes a part of the elbow joint. This is formed by the olecranon and the coronoid process. Thus, the correct answer is option C.

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