Question:
A 20-year-old boy got severe pain due to hyperextension of shoulder while training in the gym. The trainer expected a probable disruption of the structure marked “A” in the image below. Which site is affected?
A 20-year-old boy got severe pain due to hyperextension of shoulder while training in the gym. The trainer expected a probable disruption of the structure marked “A” in the image below. Which site is affected?
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Long head of triceps originates from the infraglenoid tubercle; long head of biceps originates from the supraglenoid tubercle.
Updated On: May 14, 2026
- Shaft of humerus
- Deltoid tubercle of humerus
- Infraglenoid tubercle of scapula
- Supraglenoid tubercle of scapula
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The Correct Option is C
Solution and Explanation
Concept:
The long head of triceps brachii originates from the infraglenoid tubercle of scapula. Shoulder hyperextension can stress structures attached near the glenoid region.
Step 1: Recall attachment.
The long head of triceps originates from: \[ \text{Infraglenoid tubercle of scapula} \]
Step 2: Relate with shoulder movement.
Hyperextension of the shoulder can cause traction injury at the origin of the long head of triceps.
Step 3: Choose the affected site.
Therefore, the affected site is: \[ \text{Infraglenoid tubercle of scapula} \]
Step 1: Recall attachment.
The long head of triceps originates from: \[ \text{Infraglenoid tubercle of scapula} \]
Step 2: Relate with shoulder movement.
Hyperextension of the shoulder can cause traction injury at the origin of the long head of triceps.
Step 3: Choose the affected site.
Therefore, the affected site is: \[ \text{Infraglenoid tubercle of scapula} \]
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