sacroiliac joint


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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.

sacroiliac

 [sa″kro-il´e-ak]
pertaining to the sacrum and ilium, or the joint formed between them, or to the lower part of the back where they meet.
sacroiliac disease chronic tuberculous inflammation of the sacroiliac joint.
sacroiliac joint the joint formed by the sacrum and ilium where they meet on either side of the lower back. The tight joint allows little motion and is subject to great stress, as the body's weight pushes downward and the legs and pelvis push upward against the joint. The sacroiliac joint must also bear the leverage demands made by the trunk of the body as it turns, twists, pulls, and pushes. When these motions place an excess of stress on the ligaments binding the joint and on the connecting muscles (such as during weight lifting), strain may result.

sa·cro·il·i·ac joint

[TA]
the synovial joint on either side between the auricular surface of the sacrum and that of the ilium.

sacroiliac joint

the joint formed by the sacrum and ilium where they meet on either side of the lower back. The tight joint allows little motion and is subject to great stress as the body's weight pushes downward and the legs and pelvis push upward against the joint. The sacroiliac joint must also bear the leverage demands made by the trunk of the body as it turns, twists, pulls, and pushes. When these motions place an excess of stress on the ligaments binding the joint and on the connecting muscles (such as during weightlifting), strain may result.

sa·cro·il·i·ac joint

(sā'krō-il'ē-ak joynt) [TA]
The synovial joint between the sacrum and the ilium.

sacroiliac joint

articulation between spine and pelvis; fibrous joint between sacrum and iliac bones

sa·cro·il·i·ac joint

(sā'krō-il'ē-ak joynt) [TA]
The synovial joint between the sacrum and the ilium.

sacroiliac joint (sak´rōil´ēak´),

n an irregular synovial joint between the sacrum and ilium on either side of the pelvis.

sacroiliac

pertaining to the sacrum and the ilium, or the joint between these two bones, or to the part of the back where these bones meet on both sides of the back.

sacroiliac joint
see Table 11.
References in periodicals archive ?
On X-ray of pelvis or MRI images of sacroiliac joints, there was no erosion or joint space narrowing.
Radiofrequency sacroiliac joint denervation for sacroiliac syndrome.
These cages are coated with hydroxyapatite (calcium prosperous combined to match the existing native bone) and are inserted across the sacroiliac joint.
Prior to this, the sacroiliac joint often was overlooked.
Thus, magnetic resonance imaging (MRI) applied and showed low signal intensity on T1-weighted images and high signal intensity on T2- weighted images on the left sacrum wing, which is parallel to sacroiliac joint.
A radiograph of the pelvis showed a rounded well-defined lytic lesion in the sacrum, adjacent to the left sacroiliac joint in addition to the radio-opaque calculus in the distal ureter (Figure 1).
Stress fractures, iliopsoas irritation and sacroiliac joint dysfunction each have the possibility of becoming chronic if not treated properly.
Five women required drainage of the sacroiliac joint, and three needed surgical debridement.
The company intends to use the proceeds to support growing sales and market development efforts as coverage of minimally invasive sacroiliac joint fusion improves in 2016 and beyond.
One-year results from INSITE were published in the journal Neurosurgery and titled Randomized Controlled Trial of Minimally Invasive Sacroiliac Joint Fusion Using Triangular Titanium Implants Vs Non-Surgical Management for Sacroiliac Joint Dysfunction: 12-Month Outcomes.
10 - minimally invasive system to stabilize the sacroiliac joint,Task No.
We report a rare case of hydatid disease with sacroiliac joint involvement mimicking ankylosing spondylitis (AS).