Olkaluukyynärluu

Olkaluukyynärluu is a Finnish term referring to the humerus, ulna, and radius bones of the arm. The humerus is the long bone of the upper arm, extending from the shoulder to the elbow. It articulates with the scapula at the shoulder joint and with the ulna and radius at the elbow joint. The ulna is one of the two long bones in the forearm, located on the medial side (pinky finger side) when the arm is in anatomical position. It is the longer of the two forearm bones and forms the main part of the elbow joint with the humerus. The radius is the other long bone in the forearm, located on the lateral side (thumb side) in anatomical position. It articulates with the humerus at the elbow and with the carpal bones of the wrist. The radius also articulates with the ulna at the proximal and distal radioulnar joints, allowing for pronation and supination of the forearm, which are movements that turn the palm of the hand downwards and upwards, respectively. Together, these three bones form the structural framework of the arm and are essential for a wide range of movements, from simple gestures to complex athletic activities.