Articulation humeroulnaris is a complex medical term that describes the joint between the humerus and ulna bones in the arm. It is spelled using the International Phonetic Alphabet (IPA) as /ɑrtɪkjə’leɪʃən hjuːmərəʊʌl’neərɪs/. The first part of the word, "articulation," is spelled with the letter "c" but pronounced with a "k" sound, represented by the phonetic symbol /k/. The second part, "humeroulnaris," is pronounced with a silent "h" and a long "u" sound represented by the /juː/ symbol. This term is commonly used by physicians and medical professionals.
Articulation humeroulnaris refers to the joint that exists between the humerus bone of the upper arm and the ulna bone of the forearm. This joint, also known as the elbow joint, allows for the articulation or connection of these two bones, enabling movements and flexibility necessary for the functioning of the arm.
The articulation humeroulnaris is a synovial joint, meaning it is surrounded by a joint capsule and contains synovial fluid that lubricates the joint surfaces and reduces friction during movement. It is classified as a hinge joint due to its restricted range of motion, primarily allowing for flexion and extension of the forearm. Along with the articulation humeroradialis and articulation radioulnaris proximalis, it is one of three joints that make up the elbow complex.
The articulation humeroulnaris is supported by several ligaments, including the ulnar collateral ligament and the radial collateral ligament, which provide stability to the joint. The joint is also reinforced by various muscles, tendons, and bursae (small fluid-filled sacs) surrounding it. These structures work together to enable the arm to perform numerous daily activities such as reaching, lifting, and grasping.
Disorders or injuries, such as fractures, dislocations, or overuse conditions like tennis elbow, can affect the articulation humeroulnaris and lead to pain, stiffness, and limited range of motion. Proper medical evaluation and management are essential to restore function and alleviate symptoms in such cases.
Humero-ulnar articulation.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "articulation humeroulnaris" is derived from Latin and Greek roots.
- "Articulation" comes from the Latin word "articulatio", which means joint.
- "Humeroulnaris" is a combination of two Latin terms: "humerus" refers to the bone of the upper arm (humerus), and "ulna" refers to the bone of the forearm (ulna).
Therefore, "articulation humeroulnaris" is used to refer to the joint that connects the humerus bone with the ulna bone in the arm.