Which of the following best describes the implications of a Boutonniere deformity?

Boutonniere deformity is characterized by a specific configuration of the finger that results from an injury to the extensor tendon. It occurs when the central slip, a component of the extensor mechanism that extends the proximal interphalangeal (PIP) joint, is ruptured or injured. This injury leads to the characteristic bending at the PIP joint while the distal interphalangeal (DIP) joint remains hyperextended.

Understanding this condition is crucial in orthopedic practice because it not only affects the function of the hand but also may result in long-term consequences if not properly treated. Treatment often involves splinting to maintain proper alignment and may require surgical intervention in severe cases. Recognizing the implications of this injury helps clinicians effectively plan rehabilitation strategies and manage patient outcomes.

Conditions such as tendon ruptures and fractures in the hand have specific implications for treatment and rehabilitation; however, they differ significantly from the Boutonniere deformity, which specifically involves the extensor tendon.