úlnliðsbeins

Úlnliðsbeins is the Icelandic term for the distal end of the ulna, one of the two long bones in the forearm. The ulna is located on the medial (pinky finger) side of the forearm. The distal end of the ulna articulates with the radius and the carpal bones of the wrist, forming key components of the wrist joint. It plays a crucial role in wrist flexion, extension, and rotation. Specifically, the ulnar head, the distalmost part of the ulna, is a rounded prominence that fits into a notch on the distal radius. This articulation, along with the triangular fibrocartilage complex (TFCC) that stabilizes the joint, allows for pronation and supination of the forearm. Fractures or injuries to the distal ulna, often referred to as úlnliðsbeinsbrots in Icelandic, can significantly impair wrist function. These injuries can occur due to falls or direct trauma. Treatment depends on the severity and location of the fracture, and may involve immobilization or surgical intervention.