What is the impression for costoclavicular ligament?
On the inferior surface of clavicle near the sternal end is a broad rough surface, the impression for costoclavicular ligament (costal tuberosity, rhomboid impression), rather more than 2 cm. in length, for the attachment of the costoclavicular ligament.
What is costoclavicular joint?
The costoclavicular joint is a variant of the ligamentous connection between the medial part of the clavicle and the first rib.
What does the costoclavicular ligament connect?
The coracoclavicular ligament, as described above, serves to connect the clavicle and the coracoid process of the scapula. Its two-component structure allows for proper apposition of the acromion and the clavicle while preventing vertical displacement of the scapula with respect to the clavicle.
Where does costoclavicular ligament attach?
Gross anatomy The costoclavicular ligament binds the inferior medial clavicle (via the rhomboid fossa) to the first costal cartilage and the adjacent end of the first rib. It is composed of an anterior lamina and posterior lamina which are usually separated by a bursa.
What is the acromioclavicular ligament?
This ligament is a quadrilateral band, covering the superior part of the articulation, and extending between the upper part of the lateral end of the clavicle and the adjoining part of the upper surface of the acromion.
What movements occur at the acromioclavicular joint?
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 does the acromioclavicular ligament do?
The acromioclavicular ligament serves to reinforce the joint capsule and serves as the primary restraint to posterior translation and posterior axial rotation at the AC joint.
What is the medical term for impression of the clavicle?
im·pres·sion for cos·to·cla·vic·u·lar lig·a·ment. [TA] an irregular pitted area on the inferior surface of the clavicle at its sternal end, giving attachment to the costoclavicular ligament. Synonym(s): impressio ligamenti costoclavicularis [TA], costal tuberosity, rhomboid impression, tuberositas costalis.
What is the costoclavicular area?
an irregular pitted area on the inferior surface of the clavicle at its sternal end, giving attachment to the costoclavicular ligament. Synonym(s): impressio ligamenti costoclavicularis [TA], costal tuberosity, rhomboid impression, tuberositas costalis.
What causes the costoclavicular passage to shear?
A scissoring action of the clavicle against the first rib narrows the costoclavicular passage and shears the neurovascular bundle. The first rib elevates toward/against the clavicle. This often occurs in clients who have laboured breathing. Tight anterior and middle scalenes and subclavius can also cause this to occur.
What is the history of costoclavicular syndrome?
The costoclavicular syndrome was first described in soldiers with loaded knapsacks, who developed pain, numbness, and fatigueability of the arms as they stood at attention. The mechanisms of compression involved downward movement of the clavicle against the first rib with a resultant tendency to shearing of the neurovascular bundle.