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Annular Ligament (other)
Annular ligament may refer to: * Zona orbicularis, Annular ligament of femur * Annular ligaments of fingers * Annular ligament of radius *Annular ligament of stapes (also known as the stapediovestibular joint) * Annular ligaments of trachea * Annular ligaments of toes * Annular stapedial ligament See also * Annulus (other), Annular {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zona Orbicularis
The zona orbicularis or annular ligament is a ligament on the Femur neck, neck of the femur formed by the circular fibers of the Capsule of hip joint, articular capsule of the Hip, hip joint. It is also known as the orbicular zone, ring ligament, and zonular band. Structure The zona orbicularis forms a ring around the neck of the femur. The articular capsule is much thicker above and in front of the joint, where the greatest amount of resistance is required, and thin and loose behind and below the joint. The capsule consists of two sets of fibers, circular and longitudinal. The circular fibers, the zona orbicularis, are most abundant at the lower and back part of the capsule where they form a sling or collar around the femoral neck. Anteriorly, they blend with the deep surface of the iliofemoral ligament, and gain an attachment to the anterior inferior iliac spine.''Gray's Anatomy'' (1918), 7a3 Function The zona orbicularis and proximal hip joint capsule are poorly understoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annular Ligaments Of Fingers
In human anatomy, the annular ligaments of the fingers, often referred to as A pulleys, are the annular part of the fibrous sheathes of the fingers. Four or five such annular pulleys, together with three cruciate pulleys, form a fibro-osseous tunnel on the palmar aspect of the hand through which passes the deep and superficial flexor tendons. The annular and cruciate ligaments serve to govern the flexor mechanism of the hand and wrist, providing critical constraints to the flexor tendons to prevent bowstringing upon contraction and excursion of extrinsic flexor musculo-tendinous units. The first annular pulley (A1 pulley), near the head of the metacarpal bone, lies in the flexor groove in the deep transverse metacarpal ligament. As a general rule, the A1, A3, and A5 pulleys in the fingers are "joint pulleys" that originate from the volar plate on the volar aspect of the metacarpophalangeal, proximal interphalangeal, and distal interphalangeal joints, respectively. The A2 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annular Ligament Of Radius
The annular ligament (orbicular ligament) is a strong band of fibers that encircles the head of the radius, and retains it in contact with the radial notch of the ulna.'' Gray's Anatomy'' (1918), see infobox Per '' Terminologia Anatomica 1998'', the spelling is "anular", but the spelling "annular" is frequently encountered. Indeed, the most recent version of ''Terminologia Anatomica'' (2019) uses "annular" as the preferred English spelling. Anatomy The annular ligament is attached by both its ends to the anterior and posterior margins of the radial notch of the ulna, together with which it forms the articular surface that surrounds the head and neck of the radius. The ligament is strong and well defined, yet its flexibility permits the slightly oval head of the radius to rotate freely during pronation and supination. The head of the radius is wider than the bone's neck, and, because the annular ligament embraces both, the radial head is "trapped" inside the ligament which thus ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annular Ligament Of Stapes
The annular stapedial ligament (also called the stapediovestibular joint) is a ring of fibrous soft tissue that connects the base of the stapes to the oval window of the inner ear. Calcification and hardening of the annular ligament of the stapes ( Otosclerosis) is a common cause of adult deafness Deafness has varying definitions in cultural and medical contexts. In medical contexts, the meaning of deafness is hearing loss that precludes a person from understanding spoken language, an audiological condition. In this context it is written .... Ear Ligaments {{ligament-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annular Ligaments Of Trachea
The trachea, also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs. The trachea extends from the larynx and branches into the two primary bronchi. At the top of the trachea the cricoid cartilage attaches it to the larynx. The trachea is formed by a number of horseshoe-shaped rings, joined together vertically by overlying ligaments, and by the trachealis muscle at their ends. The epiglottis closes the opening to the larynx during swallowing. The trachea begins to form in the second month of embryo development, becoming longer and more fixed in its position over time. It is epithelium lined with column-shaped cells that have hair-like extensions called cilia, with scattered goblet cells that produce protective mucins. The trachea can be affected by inflammation or infection, usually as a result of a viral illness affecting other par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annular Ligaments Of Toes
The annular ligaments of the toes are the annular part of the fibrous sheathes of the toes. These strong transverse bands of fibrous tissue cross the flexor tendons at the level of the upper half of the proximal phalanges of the foot The phalanges (singular: ''phalanx'' ) are digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones .... Ligaments Lower limb anatomy Toes {{ligament-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annular Stapedial Ligament
The annular stapedial ligament (also called the stapediovestibular joint) is a ring of fibrous soft tissue that connects the base of the stapes to the oval window of the inner ear. Calcification and hardening of the annular ligament of the stapes ( Otosclerosis) is a common cause of adult deafness Deafness has varying definitions in cultural and medical contexts. In medical contexts, the meaning of deafness is hearing loss that precludes a person from understanding spoken language, an audiological condition. In this context it is written .... Ear Ligaments {{ligament-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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