Answer :
Final answer:
Mallet (baseball) finger is the correct term for a finger injury involving the avulsion of the tendon of the extensor digitorum muscle. This injury results in the inability to extend the fingertip after a forceful impact. Other hand conditions like Boutonnière deformity and Gamekeeper's thumb refer to different injuries.
Explanation:
Understanding Mallet (Baseball) Finger
The term that denotes a finger injury involving an avulsion of the tendon of the extensor digitorum muscle is Mallet (baseball) finger. This injury occurs when the tip of a finger is struck forcibly, causing the tendon to rupture or detach from its insertion point, leading to an inability to extend the tip of the finger.
Other Terms Explained
- Boutonnière deformity: A condition resulting from an injury to the central slip of the extensor tendon, leading to a characteristic bending of the finger at the middle joint.
- Ganglion: A fluid-filled sac that develops on joints or tendons within the hand.
- Gamekeeper's thumb: An injury to the ulnar collateral ligament of the thumb, commonly caused by repetitive stress or an acute injury.
- de Quervain's disease: A painful condition affecting the tendons on the thumb side of the wrist.
In summary, while there are various hand injuries and conditions, Mallet finger specifically refers to the injury described in the question where the tendon of the extensor digitorum muscle is avulsed.
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