elbow joint


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Related to elbow joint: wrist joint, tennis elbow

joint

 [joint]
the site of the junction or union of two or more bones of the body; its primary function is to provide motion and flexibility to the frame of the body. Some are immovable, such as the sutures where segments of bone are fused together in the skull. Others, such as those between the vertebrae, are gliding joints and have limited motion. However, most joints allow considerable motion. The most common type are the synovial joints, which have a complex internal structure, composed not only of ends of bones but also of ligaments, cartilage, the articular capsule, the synovial membrane, and sometimes bursae.
acromioclavicular joint the point at which the clavicle joins with the acromion.
ankle joint the joint between the foot and the leg; see ankle.
arthrodial joint gliding joint.
ball-and-socket joint a synovial joint in which the rounded or spheroidal surface of one bone (the “ball”) moves within a cup-shaped depression (the “socket”) on another bone, allowing greater freedom of movement than any other type of joint. See illustration. Called also polyaxial or spheroidal joint.
bicondylar joint a condylar joint with a meniscus between the articular surfaces, as in the temporomandibular joint.
cartilaginous joint a type of synarthrosis in which the bones are united by cartilage, providing slight flexible movement; the two types are synchondrosis and symphysis.
composite joint (compound joint) a type of synovial joint in which more than two bones are involved.
condylar joint (condyloid joint) one in which an ovoid head of one bone moves in an elliptical cavity of another, permitting all movements except axial rotation; this type is found at the wrist, connecting the radius and carpal bones, and at the base of the index finger. See illustration.
diarthrodial joint synovial joint.
elbow joint the synovial joint between the humerus, ulna, and radius. See also elbow.
ellipsoidal joint condylar joint.
facet j's the articulations of the vertebral column.
fibrous joint a joint in which the union of bony elements is by continuous intervening fibrous tissue, which makes little motion possible; the three types are suture, syndesmosis, and gomphosis. Called also immovable or synarthrodial joint and synarthrosis.
flail joint an unusually mobile joint, such as results when joint resection is done to relieve pain.
glenohumeral joint the synovial joint formed by the head of the humerus and the glenoid cavity of the scapula. Called also humeral joint and shoulder joint.
gliding joint a synovial joint in which the opposed surfaces are flat or only slightly curved, so that the bones slide against each other in a simple and limited way. The intervertebral joints are this type, and many of the small bones of the wrist and ankle also meet in gliding joints. Called also arthrodial joint and plane joint.
hinge joint a synovial joint that allows movement in only one plane, forward and backward. Examples are the elbow and the interphalangeal joints of the fingers. The jaw is primarily a hinge joint but it can also move somewhat from side to side. The knee and ankle joints are hinge joints that also allow some rotary movement. See illustration. Called also ginglymus.
hip joint the synovial joint formed at the head of the femur and the acetabulum of the hip. See illustration at hip.
humeral joint glenohumeral joint.
immovable joint fibrous j.
knee joint the compound joint between the femur, patella, and tibia.
pivot joint a synovial joint in which one bone pivots within a bony or an osseoligamentous ring, allowing only rotary movement; an example is the joint between the first and second cervical vertebrae (the atlas and axis). See illustration. Called also rotary or trochoid joint.
plane joint gliding joint.
polyaxial joint ball-and-socket joint.
rotary joint pivot joint.
sacroiliac joint the joint between the sacrum and ilium in the lower back; see also sacroiliac joint.
saddle joint a synovial joint whose movement resembles that of a rider on horseback, who can shift in several directions at will; there is a saddle joint at the base of the thumb, so that the thumb is more flexible and complex than the other fingers but is also more difficult to treat if injured.
shoulder joint humeral joint.
simple joint a type of synovial joint in which only two bones are involved.
spheroidal joint ball-and-socket joint.
synarthrodial joint fibrous j.
synovial joint a specialized joint that permits more or less free movement, the union of the bony elements being surrounded by an articular capsule enclosing a cavity lined by synovial membrane. Called also articulation and diarthrosis. A capillary network in the synovial membrane provides nutrients and synovial fluid to nourish and lubricate the joint space. Strong fibrous bands or cords (ligaments) give strength and security to synovial joints. The majority of the body's joints are of this type. They are divided into five types according to structure and motion: ball and socket, gliding, saddle, hinge, and pivot.
Joints.
trochoid joint pivot joint.
temporomandibular joint (TMJ) a bicondylar joint formed by the head of the mandible and the mandibular fossa, and the articular tubercle of the temporal bone. See also temporomandibular joint disorder.

el·bow joint

[TA]
a compound hinge synovial joint between the humerus and the bones of the forearm; it consists of the articulatio humeroradialis and the articulatio humeroulnaris.
Synonym(s): articulatio cubiti [TA], elbow (2) [TA], cubital joint

elbow joint

the hinged articulation of the humerus, the ulna, and the radius. It is covered by a protective capsule associated with three ligaments and an extensive synovial membrane. The elbow joint allows flexion and extension of the forearm and accommodates the radioulnar articulation. Also called articulatio cubiti.

el·bow joint

(el'bō joynt) [TA]
A compound hinge synovial joint between the humerus and the bones of the forearm; it consists of the articulatio humeroradialis and the articulatio humeroulnaris.
Synonym(s): cubital joint.
Right elbow joint, lateral view.

elbow joint

'hinge joint', allowing only flexion and extension, between the lower end of the humerus and the upper ends of the ulna and radius. The prominent medial and lateral epicondyles of the humerus provide attachment for the major ligaments on the two sides of the joint: on the inside to the margin of the concave notch on the ulna, and on the outside to the ligament around the head of the radius. elbow injury see tennis elbow, golfer's elbow; appendix 1.2 .

el·bow joint

(el'bō joynt) [TA]
A compound hinge synovial joint between the humerus and the bones of the forearm.
Synonym(s): elbow (2) [TA] .
References in periodicals archive ?
On histopathologic examination, chronic, active osteomyelitis was diagnosed in thoracic vertebrae 5 to 7, and chronic, active arthritis was present in both the right shoulder and left elbow joints.
The static joint torques exerted at the shoulder and elbow joints when using the exoskeleton were shown to be nearly equal to the objective static joint torques obtained from models of free-weight exercises and kinematics at lower and moderate motion speeds.
It winds over the lateral surface in the spiral groove of the humerus, finally reaciiing the medial side, where it inserts on the radial and ulnar tuberosities which ends with one tendon on the medial aspect of the radius, just distal to the biceps muscle to insert on the interosseous membrane of the elbow joint.
The arm has five degrees of freedom of movement provided by rotary actuators known as the shoulder azimuth joint, shoulder elevation joint, elbow joint, wrist joint and turret joint.
Possible causes include overuse, subluxation of the nerve, trauma including fractures around the elbow joint, osteophyte formation, soft-tissue masses and a thickened retinaculum.
UNIVERSITY of Liverpool vets were the first in the UK to carry out an elbow joint replacement operation on a dog in 2004.
The most common error made is that instead of keeping the spine vertical as the pelvis rocks forward, the therapist collapses downward toward the client; this causes the elbow joint to further bend.
X-rays showed a fracture of the left femur and a severe right ulna fracture extending in to the elbow joint, in addition to a left hip dislocation.
These include taping techniques of the upper body (scapula, shoulder joint, elbow joint, wrist joint, hand, thumb and finger), lower body (hip and buttock, thigh, knee joint, patellofemoral joint, superior and inferior tibiofibular joints, ankle joint, foot and toe), spinal conditions (cervical, thoracic and lumbar spine, pelvis and sacroiliac joint) and soft casting techniques (thumb, ankle and foot)
The arm is a powerful device: the elbow joint is able to lift 20 pounds, and the arm has end-point control, meaning the shoulder and elbow move simultaneously to reach an end-point.