Küünarnukid

Küünarnukid is the Estonian word for elbows. The elbow is a joint in the middle of the arm that connects the upper arm to the forearm. It is a hinge joint, meaning it allows for movement in only one plane, primarily flexion and extension. This joint is formed by the articulation of three bones: the humerus, the radius, and the ulna. The elbow joint is crucial for a wide range of arm movements, from simple actions like eating to complex activities like throwing or writing.

The elbow joint is surrounded by a capsule and reinforced by ligaments, which provide stability. Muscles in the upper arm, such as the biceps and triceps, contract and relax to produce the bending and straightening of the arm at the elbow. Tendons connect these muscles to the bones, transmitting the force needed for movement. The bony prominences on either side of the elbow are easily palpable and are commonly referred to as the "funny bone" or olecranon process, which is the most prominent point of the ulna.

Elbow injuries can occur from trauma, overuse, or repetitive strain. Common conditions include sprains, fractures, dislocations, and inflammation of tendons, such as tennis elbow or golfer's elbow. The elbow's exposed position makes it susceptible to bumps and scrapes, and the skin over the bony prominence is thin, often leading to superficial wounds. Despite its relatively simple hinge-like function, the elbow is vital for the overall mobility and utility of the arm.