The acromioclavicular joint connects the clavicle to the acromion, which is part of the shoulder blade or scapula. There is not a lot of movement in this joint, but when there is an injury here it can be very painful. The scapular thoracic joint is the space between the back of the chest wall and the front of the shoulder blade or scapula and there is a lot of movement in this joint.
There is forward and back tilt, gliding movement across the back and rotation across the back. Ligaments are a dense connective tissue that connects bone to bone. They are fairly short in comparison to tendons, but very similar in what they are made of. Ligaments are tough and flexible and look like a white band or cable-like structure. To withstand forces that it takes from different directions a ligament is made of a weaving matrix of fibers. The ligaments in the shoulder are all named after the bones they connect.
The clavicle has two ligaments involving the shoulder that help with stabilizing it to nearby bony structures: The acromioclavicular ligament and the coracoclavicular ligament both stabilize the clavicle to the shoulder blade. There is also the costoclavicular ligament that stabilizes the clavicle to the sternum of the chest.
Injuries to these ligaments can cause clavicle instability. There are ligaments that connect the shoulder blade scapula to the Humerus which include: coracohumeral ligament and the glenohumeral ligaments superior, middle and inferior. Finally, there is a ligament connecting the coracoid process to the acromion called the you guessed it! This ligament plays a role in stopping the head of the humerus from shifting too high upward into the shoulder as well as a tension band in.
A diagnostic test that uses invisible electromagnetic energy beams to produce images of internal tissues, bones, and organs onto film. Magnetic resonance imaging MRI. A diagnostic procedure that uses a combination of large magnets, radiofrequencies, and a computer to produce detailed images of organs and structures within the body; can often determine damage or disease in a surrounding ligament or muscle.
A diagnostic imaging procedure that uses a combination of X-rays and computer technology to produce horizontal, or axial, images often called slices of the body.
A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. CT scans are more detailed than general X-rays. Electromyogram EMG. A test to evaluate nerve and muscle function. A diagnostic technique that uses high-frequency sound waves to create an image of the internal organs.
A minimally-invasive diagnostic and treatment procedure used for conditions of a joint. This procedure uses a small, lighted, optic tube arthroscope that is inserted into the joint through a small incision in the joint. Health Home Conditions and Diseases. The shoulder is made up of several layers, including the following: Bones.
Facilitate movement, including the following: Sternoclavicular joint where the clavicle meets the sternum Acromioclavicular AC joint where the clavicle meets the acromion Shoulder joint glenohumeral joint. A white, shiny, flexible band of fibrous tissue that binds joints together and connects various bones and cartilage, including the following: Joint capsule. Ligaments that attach the clavicle to the acromion Ligaments that connect the clavicle to the scapula by attaching to the coracoid process Acromion.
Muscles to help support and rotate the shoulder in many directions Bursa. What causes shoulder problems? Edward McFarland. Shoulder specialist Edward McFarland, M. These ligaments are the main source of stability for the shoulder. They are the superior , middle and inferior glenohumeral ligaments. They help hold the shoulder in place and keep it from dislocating.
This ligament can thicken and cause Impingement Syndrome. Coraco-clavicular Ligaments CCL : These two ligaments trapezoid and conoid ligaments attach the clavicle coracoid process of the scapula.
These tiny ligaments with the acomioclavicular joint play an important role in keeping the scapula attached to the clavicle and thus keeping your shoulder 'square'. They carry a massive load and are extremely strong. A fall on the point of the shoulder can rupture these ligaments with dislocation of the AC Joint.
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