If the trochlea was fractured, what joint would be affected?Multiple ChoiceThe wrist jointThe elbow jointThe thumb jointThe shoulder joint

Understanding the Trochlea

1. Identify the Trochlea: The trochlea is a part of the humerus bone located at the elbow joint. It is a spool-shaped surface that articulates with the ulna, allowing for the hinge-like movement of the elbow.

Joint Affected by Trochlea Fracture

2. Consider the Options:
   • The wrist joint: Located distal to the elbow, involves the radius and carpal bones.
   • The elbow joint: Directly involves the humerus, specifically the trochlea.
   • The thumb joint: Involves the carpometacarpal joint of the thumb.
   • The shoulder joint: Forms the connection between the humerus and the scapula.

Analyzing the Options

3. Logical Deduction:
   • A fracture of the trochlea would directly impact the elbow joint since it is where the trochlea serves as a critical component for articulation with the ulna.

Conclusion

4. Final Answer: The joint that would be affected by a fracture of the trochlea is The elbow joint.