What muscles originate on the clavicle

There are five muscles that make their origin or insertion on the clavicle: pectoralis major and sternocleidomastoid muscles medially; subclavius muscle centrally; and deltoid and trapezius muscles distally (Gray, 1918; Netter, 1987).

What muscle attaches under clavicle?

Subclavius muscleInsertionsubclavian groove of clavicle (inferior surface of middle one third of the clavicle)Arterythoracoacromial trunk, clavicular branchNervesubclavian nerveActionsdepression of clavicle elevation of first rib

What muscle is above the clavicle?

The largest of these shoulder muscles is the deltoid. This large triangular muscle covers the glenohumeral joint and gives the shoulder its rounded-off shape. It stretches across the top of the shoulder from the clavicle in the front to the scapula in the back.

What muscle originates at the medial clavicle?

The medial component of the CA ligament is the conoid ligament which inserts onto the conoid tubercle, and the lateral component is the trapezoid ligament which inserts onto the trapezoid line. Anterior surface: The clavicular part of the pectoralis major muscle originates from the medial clavicle anteriorly.

What tendons attach to the clavicle?

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.

Where does the clavicle originate from?

The clavicle first appears as part of the skeleton in primitive bony fish, where it is associated with the pectoral fin; they also have a bone called the cleithrum.

Where does the Sternocleidomastoid originate from on the clavicle?

The sternal head originates from the manubrium sterni, while the clavicular head from the medial third of the clavicle.

Can you pull a muscle around your collarbone?

Pain in the collarbone is also commonly caused by muscular injury to your shoulder. Your shoulder contains a number of muscles and tendons that can be strained or torn from overuse or trauma. It is often difficult to describe this pain other than “shoulder pain”.

What is the muscle on top of shoulder?

The supraspinatus muscle rests on top of the shoulder. Its tendon travels under the bone on the outside of the shoulder (the acromion). This tendon is the one most often injured because of its position between the bones.

Which muscle inserts into both the clavicle and the scapula?

The trapezius muscle has an extensive origin, which includes back of the skull, and most of the vertebrae of the spine. It inserts on to the clavicle, acromion and crest of the spine of scapula.

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How many muscles attach to clavicle?

Three muscles originate on the clavicle, and 3 muscles insert on it. The muscles that take their origin from the clavicle are as follows: Sternohyoid. Pectoralis major.

Why does your clavicle hurt?

Collarbone pain can be caused by a fracture, arthritis, a bone infection, or another condition related to the position of your clavicle. If you have sudden collarbone pain as the result of an accident, sports injury, or other trauma, get to an emergency room.

What are the symptoms of a torn tendon in the shoulder?

• Dull, deep pain in the shoulder.
• Pain at night, particularly when sleeping on the affected side.
• Tenderness or swelling in the shoulder.
• Inability to bear weight on the affected side.
• Bulge or deformation around the shoulder.

What is the origin of the trapezius muscle?

It originates on the occipital bone, the ligamentum nuchae, and the spinous processes of T01–T12. The trapezius inserts on the lateral third of the clavicle, as well as the acromion and scapular spine of the scapula. Image from Human Anatomy Atlas.

What muscles connect to the mastoid process?

The mastoid process serves for the attachment of the sternocleidomastoid, the posterior belly of the digastric muscle, splenius capitis, and longissimus capitis.

What is the origin of SCM muscle?

SternocleidomastoidOriginManubrium and medial portion of the clavicleInsertionMastoid process of the temporal bone, superior nuchal lineArteryOccipital artery and the superior thyroid arteryNerveMotor: spinal accessory nerve sensory: cervical plexus Proprioceptive: ventral rami of C2-3

Why is the clavicle the first bone to ossify?

The clavicle is the first bone to ossify in the devel- oping embryo. At approximately 5 weeks of gesta- tion, primary ossification of the clavicle proceeds by membranous ossification of two centers with no prior cartilaginous anlage. Both will soon fuse.

Is clavicle axial or appendicular?

The appendicular skeleton is everything else. It’s everything that attaches on to the axial skeleton. Think “appendages”. The pelvis, femur, fibula, tibia and all of the foot bones as well as the scapula, clavicle, humerus, radius, ulna and all of the hand bones are classified as appendicular.

What muscle is on the outside of your shoulder?

Deltoid: The deltoid muscle is on the outside of your shoulder. It helps you move your arm forward, backward and to the side.

What are the 3 shoulder muscles?

The deltoid muscle is the main muscle of the shoulder. It consists of three muscle heads: the anterior deltoid, lateral deltoid, and posterior deltoid.

What are the trapezius muscles?

The trapezius is a muscle that starts at the base of your neck, goes across your shoulders and extends to the middle of your back. The trapezius (traps muscle) helps you move your head, neck, arms, shoulders and torso. It also stabilizes your spine and helps with posture.

How do you treat a strained collarbone?

Seek prompt medical attention for a broken collarbone. Most heal well with ice, pain relievers, a sling, physical therapy and time. But a complicated break might require surgery to realign the broken bone and to implant plates, screws or rods into the bone to hold the bone in place during healing.

How do I know if I tore a ligament in my shoulder?

1. Shoulder pain and swelling.
2. Increased pain with arm movement or shrugging your shoulder.
3. Distortion in the normal contour of the shoulder.

What are the Axioappendicular muscles?

• Pectoralis major.
• Pectoralis minor.
• Subclavius.
• Serratus anterior.

Which muscles are on the anterior of the shoulder?

Anterior muscles include the pectoralis major, pectoralis minor, coracobrachialis, and the biceps brachii (Figure 1). Figure 1: The anterior muscles of the shoulder, including the pectoralis major, the underlying pectoralis minor, and the coracobrachialis, largely underlying the biceps brachii.

What are the 17 muscles of the shoulder?

Each scapula has 17 muscles attached to it: 1. Posteriorly, from superficial to deep: trapezius, rhomboid major, rhomboid minor, supraspinatus, infraspinatus, levator scapulae, teres minor, teres major, latissimus dorsi, serratus anterior, and subscapularis. 2.

What does arthritis in collarbone feel like?

Symptoms of osteoarthritis in the collarbone include: pain in the area that gets worse very gradually. stiffness in the AC joint. pain in the AC joint.

Can you sprain your collarbone?

What is it? An SC sprain is an injury to the joint where the clavicle (collarbone) meets the sternum (breastbone). These injuries are rare, requiring an accident with a lot of force, such as a tackle in football or rugby. Most SC sprains occur when an athlete is struck on the back or side of the shoulder.

How should you sleep with a sore collarbone?

Try to lie on your side or back. Have the bottom pillow supporting your shoulders and the top pillow supporting your neck. Hug a pillow, as this will put your top shoulder in an open position. Tuck the pillow up high under the arm.

How can I tell if I tore my rotator cuff?

1. Difficulty and pain caused by raising your arm.
2. Popping or clicking sounds or sensations when moving your arm.
3. Shoulder pain that worsens at night or when resting your arm.
4. Shoulder weakness and struggling to lift items.

Where is the rotator cuff muscle located?

The rotator cuff is a group of muscles and tendons that surround the shoulder joint, keeping the head of your upper arm bone firmly within the shallow socket of the shoulder.