The conoid tubercle also known as the coracoid tuberosity (not to be confused with the coracoid process of the scapula) is a bony prominence on the inferior surface of the lateral third of the clavicle.
What attaches at the conoid tubercle?
The conoid ligament attaches to the clavicle at the conoid tubercle, which is posterior medial to the trapezoid tubercle. From superior to inferior, the conoid ligament appears as an inferior pointing cone.
Which of the following ligaments span between the Conoid process of the clavicle and the coracoid process of the scapula?
Coracoclavicular Ligament. The coracoclavicular ligament, which connects the distal end of the clavicle to the coracoid process, functions to help stabilize the acromioclavicular joint. It is made up of two separate bundles, the trapezoid and conoid ligaments.
What is the trapezoid line?
Anatomical terms of bone
From the conoid tubercle an oblique ridge, the trapezoid line (or trapezoid ridge, or oblique), runs forward and lateralward, and affords attachment to the trapezoid ligament on inferior surface of clavicle.
What is the greater tubercle of the humerus?
The greater tuberosity is the prominent area of bone at the top of the humerus and is the attachment for the two large, powerful rotator cuff muscles – supraspinatus and infraspinatus. It is injured/fractured in a fall by either landing directly onto the side of your shoulder or landing with your arm outstretched.
Where is the deltoid tubercle?
The deltoid tuberosity of the humerus lies proximally about a third of the way to the elbow and provides an attachment point for the deltoid muscle. The deltoid is a triangular muscle with three attachment points: the humerus, the clavicle, and the scapula.
What does the conoid ligament do?
The conoid ligament limits anterior movement of the scapula with respect to the clavicle. The trapezoid limits posterior movement between these two bones. Both ligaments prevent the clavicle from overriding the lateral end of the clavicle.
What bone pivots on the capitulum?
The capitulum laterally articulates with the radius; the trochlea, a spool-shaped surface, articulates with the ulna.
What muscle attaches to clavicle?
Muscular attachments to the clavicle include the sternocleidomastoid, pectoralis major, and subclavius muscles proximally and the deltoid and trapezius muscles distally.
Where is the Supraglenoid tubercle?
The supraglenoid tubercle and the coracoid process are located on the distal end of the scapula.
How far medial to the AC joint does the trapezoid and conoid ligaments attach to the under surface of the clavicle?
In women, the trapezoid ligament began, on average, at 0.9 (0.4–1.6) cm and ended at 2.4 (2.0–2.8) cm and in men, it began at 1.1 (0.8–1.6) cm and ended at 2.9 (2.1–3.8) cm medial to the AC joint. The corresponding figures for the conoid ligament were 2.6 (2.0–3.7) cm and 4.7 (3.9–6.2) cm.
Which of the following movements is a good example of flexion?
Flexion, or bending, occurs when the angle between the bones decreases. Moving the forearm upward at the elbow or moving the wrist to move the hand toward the forearm are examples of flexion. Extension is the opposite of flexion in that the angle between the bones of a joint increases.
What is a tubercle in a bone?
A tubercle is a small rounded point of a bone. It also refers to a nodule attached to bone, mucous membrane (moist layer lining parts of the body), or skin.
What are ligaments?
A ligament is a fibrous connective tissue that attaches bone to bone, and usually serves to hold structures together and keep them stable.
Where is the sternal end?
The medial end is also known as the sternal end. It is quadrangular and articulates with the clavicular notch of the manubrium of the sternum to form the sternoclavicular joint. The articular surface extends to the inferior aspect for articulation with the first costal cartilage.
How do you find the greater tubercle of the humerus?
humeral head Palpate in the axilla, posterior to the tendon of the pectoralis major. Passively abduct your partner’s arm to feel the head move inferiorly. greater tuberosity This structure is located about 1/2″ below the lateral edge of the anterior acromion process.
What attaches at the greater tubercle?
The greater tubercle is the most lateral bony point of the humerus and is palpable at the posterolateral aspect of the shoulder. The superior aspect of the greater tubercle is marked by three impressions that serve as attachment points for the supraspinatus, infraspinatus and teres minor muscles.
