Which type of finger dislocation is caused by a twisting of a semi-flexed phalanx?

A PIP volar dislocation occurs when the proximal interphalangeal (PIP) joint is dislocated in a direction toward the palm (ventral side) of the hand. This type of dislocation typically results from mechanisms such as a twisting injury combined with a flexed position of the finger. The semi-flexed position of the phalanx allows for the volar plate to become disrupted, leading to a forward displacement of the proximal phalanx.

In situations where there is significant force applied to the finger while it is flexed, such as during a wrestling match or a fall, the combination of flexion and rotation can create a scenario where the joint becomes dislocated in the volar direction. Understanding the mechanics of this injury is essential, as it helps inform the proper treatment and management strategies required to restore finger function and stability.