What are acromioclavicular joints?

What are acromioclavicular joints?

The acromioclavicular, or AC, joint is a joint in the shoulder where two bones meet. One of these bones is the collarbone, or clavicle. The second bone is actually part of the shoulder blade (scapula), which is the big bone behind the shoulder that also forms part of the shoulder joint.

What is the purpose of the acromioclavicular joint?

Structure and Function The AC joint is a plane type synovial joint, which under normal physiological conditions allows only gliding movement. As it attaches the scapula to the thorax, it allows an additional range of motion to the scapula and assists in arm movement such as shoulder abduction and flexion.

What is the meaning of arthropathy?

Arthropathy is a joint disease, of which arthritis is a type. Arthropathies can be associated with a hematologic (blood) disorder or an infection, such as Lyme disease.

What are 3 main ligaments that make up the acromioclavicular joint?

Acromioclavicular (AC) joint

Type Synovial plane joint; multiaxial
Ligaments Intrinsic: Superior acromioclavicular ligament, inferior acromioclavicular ligament Extrinsic: Coracoclavicular ligament (with conoid and trapezoid parts)
Innervation Lateral pectoral nerve, suprascapular nerve

What supports the acromioclavicular joint?

The AC joint is stabilized by the two sets of ligaments; A pair of intrinsic ligaments found within the articular capsule; the superior and inferior acromioclavicular ligaments. A single extrinsic ligament found outside the joint capsule; the coracoclavicular ligament.

What is acromioclavicular joint degenerative change?

ACJ degeneration is a progressive problem where there is localised pain in the ACJ area. Tenderness is localised to the tip of the shoulder and a swelling may develop. It is usually painful to lie on the shoulder or perform activities which compress the ACJ.

What is Moderate acromioclavicular joint arthrosis?

AC joint arthrosis, or osteoarthritis of the acromioclavicular joint is most common in people who are middle aged. It develops when the cartilage in the AC joint begins to wear out. With this condition, there is usually pain that limits the motion of the arm. Causes of AC Arthritis of the Shoulder.

What causes arthropathy?

Factors that may contribute to the development of facet arthropathy include: Osteoarthritis: Degeneration of joint cartilage over time. Degeneration of the facet joints from wear and tear over the years. Direct trauma to the joint.

What is acromioclavicular joint?

Acromioclavicular joint (Articulatio acromioclavicularis) The acromioclavicular (AC) joint is the articulation between the two bones of pectoral girdle; the clavicle and scapula. It is a plane synovial joint, with flat articular surfaces which are approximately the same in size. Since there are no muscles that act directly on this joint,

What is the difference between acromial and clavicular articular?

The AC joint is the articulation between the acromial end of clavicle and the clavicular facet of the acromion of scapula. The clavicular articular surface is oval and slightly convex while the acromial surface is accordingly concave. Both articular surfaces are covered with fibrocartilage .

What are the symptoms of acromioclavicular joint arthrosis?

The symptoms of acromioclavicular (AC) joint arthrosis usually begin with pain and tenderness in the front of the shoulder around the joint. The pain may be worse when the arm is brought across the chest, since this motion compresses the joint.

What does acromial mean in medical terms?

ac·ro·mi·o·cla·vic·u·lar. Relating to the acromion and the clavicle; denoting the articulation and ligaments between the clavicle and the acromion of the scapula. Synonym(s): scapuloclavicular (1) .

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