What does the costoclavicular ligament do?
The costoclavicular ligament reinforces the inferior aspect of the joint, acting to limit clavicle elevation and anteroposterior movement.
What does the costoclavicular ligament connect?
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 does the trapezoid ligament do?
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’.
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 are the articulating surfaces of the sternoclavicular joint?
The sternoclavicular joint or sternoclavicular articulation is the joint between the manubrium of the sternum and the clavicle bone. It is structurally classed as a synovial plane joint and functionally classed as a diarthrosis and multiaxial joint.
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 is the impression for costoclavicular ligament?
On the medial part of the clavicle is a broad rough surface, the costal tuberosity (impression for costoclavicular ligament), rather more than 2 cm. in length, for the attachment of the costoclavicular ligament.
What attaches trapezoid ligaments?
Gross anatomy The trapezoid ligament arises from the upper surface of the coracoid process. It attaches to the trapezoid line (or ridge) on the inferior surface of the clavicle. The anterior border of the trapezoid ligament is free. The posterior border attaches to the conoid ligament.
Is acromioclavicular ligament intrinsic or extrinsic?
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 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 is the function of disk in sternoclavicular joint?
The disk is attached to the upper and posterior margin of the clavicle, and to the cartilage of the first rib, which functions to help prevent medial displacement of the clavicle. Greater movement occurs between the disk and the clavicle than between the disk and the manubrium.
What movements normally occur at the acromioclavicular and sternoclavicular joints?
Acromioclavicular (AC) joint
| Type | Synovial plane joint; multiaxial |
|---|---|
| Innervation | Lateral pectoral nerve, suprascapular nerve |
| Blood supply | Thoracoacromial artery, suprascapular artery |
| Movements | Protraction – retraction Elevation – depression Axial rotation |
What does the costoclavicular ligament bind to?
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. The rhomboid fossa may be prominent and simulate a lytic lesion (see case 1).
What does costoclavicular mean in anatomy?
Anatomical terminology. The costoclavicular ligament also known as the rhomboid ligament or Halsted’s ligament is a ligament of the shoulder girdle. It is short, flat, and rhomboid in form. It is the major stabilizing factor of the sternoclavicular joint and is the axis of movement of the joint, especially during elevation of the clavicle.
What do we know about the sternoclavicular ligament?
Introduction: The sternoclavicular joint is of clinical importance. However, there is scant information in the literature regarding one ligament of this area, the costoclavicular ligament (CCL). Material and methods: In order to further elucidate this structure, 10 adult formalin-fixed cadavers (17 sides) underwent dissection of the CCL.
Is the costoclavicular ligament a formalin-fixed ligament?
However, there is scant information in the literature regarding one ligament of this area, the costoclavicular ligament (CCL). Material and methods: In order to further elucidate this structure, 10 adult formalin-fixed cadavers (17 sides) underwent dissection of the CCL.