Fracture of phalanges

Fractures of the phalanx are most common in the hand, and most are open fractures. And most are caused by direct violence, which can cause various types of fractures at any part of the finger. Due to the different parts of the phalanx, it is pulled by tendons from different directions, resulting in displacement in different directions. For example, the middle phalanx fractures are pulled by the interosseous and vermiform muscles, causing an angle to the palm. ; The middle segment of the phalanx fractures at the distal of the superficial flexor tendon, due to its traction, also produces an angle to the palm; (figure 1). Intra-articular fractures of the base of the proximal phalanx can be divided into three types: collateral ligament tear, compression fracture, and longitudinal split fracture. Distal phalanx fractures are mostly comminuted fractures, often without obvious displacement; and avulsion fractures on the dorsal side of the basal base of the distal phalanx usually form hammer finger deformities.