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One day while shopping, Ms. Wantta Bargain picked up her 3-year-old son, Somm, by his right wrist and lifted him into a shopping cart. She hard a clicking sound and Somm immediately began to cry and hold his elbow. Given that lifting the child cause a separation at the elbow and not a fracture, which is more likely: separation of the radius and humerus or separation of the ulna and humerus? Why?

Answer :

emmanuelkossy

Answer:

Seperation of the radius and humerus

Explanation:

The elbow joint is formed as humerus articulates with the radius and ulna. The radius loosely attaches to both the humerus and the ulna, whereas the ulna fits tightly over the end of the humerus. The clicking sound Ms. Wantta heard was the separation of the radius and humerus, because the cartilage between these two bones is loosely attached.

Lifting the child cause a separation at the elbow and not a fracture means that there is Seperation of the radius and humerus.

Separation of Radius and Humerus

The reason behind the sound of Clicking and the pain in elbow, describes the separation of radius and humerus because of the shifting of Cartilage from its place.

Hence, the most likely event is the separation of Radius and Humerus, rather than ulna and humerus because ulna fits tightly to humerus, while radius and humerus are attached loosely by cartilage.

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