shoulder girdle set 2

what happens when the scapula Adducts

. Adduction (Medial Glide). The medial border of the scapula moves closer to the vertebral column and the lateral angle moves posteriorly (this relates to retraction).

scapula movements

1. Anterior Tilt. Movement about a coronal axis in which the coracoid process moves in an anterior and caudal direction (can be considered depressed anteriorly) while the inferior angle moves in a posterior and cranial direction. This movement is associated with elevation. 2. Elevation (Superior Glide). The scapula moves up and away from the ribcage, e.g., shrugging. 3. Depression (Inferior Glide). The scapula moves downward and against the ribcage. 4. Abduction (Lateral Glide). The medial border of the scapula moves away from the vertebral column and the lateral angle moves anteriorly. Following the contour of the thorax, it assumes a posterolateral position in full abduction (also called protraction). 5. Adduction (Medial Glide). The medial border of the scapula moves closer to the vertebral column and the lateral angle moves posteriorly (this relates to retraction). 6. Rotation (Inferior Angle Moves Toward or Away From Midline). Rotation of the humerus is associated with similar rotation of the spine. The movement is around a sagittal axis and is related to the glenoid fossa's movement. Medial or Downward Rotation (Glenoid Fossa Moves Downward): Inferior angle (bottom of the blade) moves superomedially (up and toward the spine) as the lateral angle (nearest the humerus) moves inferolaterally (down and away from the midline). Lateral (Upward) Rotation: Conversely, inferior angle (bottom of the blade) moves superolaterally while the superior angle moves inferomedially again, using the glenoid fossa as the reference point. The scapula and clavicle are moved by numerous muscles, many of which also provide movement of bones such as the humerus, spine and occiput. Depending on whether the scapula is fixed determines the action of these muscles. There are also many muscles that stabilize the scapula and clavicle during arm and head movement.

Scapula adducts with internal rotation

Downward Rotation (Inferior Rotation) Rotary movement of the scapula; moving inferior angle of scapula medially and downward. Typically accompanies Shoulder Adduction or Extension. Levator scapulae Rhomboids Pectoralis minor Pectoralis major Latissimus dorsi

Push ups

For your pectoralis minor and serratus anterior, you're looking for exercises where you pull your shoulder blades apart like push ups— you contract those muscles and your shoulder blades pull apart when you abduct scapula

Internal rotation exercises

Internal Shoulder Rotation with Band Internal (medial) shoulder rotation exercises strengthen the rotator cuff muscles which stabilise the shoulder joint. overhead press coming down is internal rotation

Pairing shoulder girdle and shoulder joint

Joint Girdle Horizontal adduction Abduction (protraction) Horizontal abduction Adduction (retraction) External rotation Adduction (retraction) Internal rotation Abduction (protraction) Extension Depression/downward rotation Flexion Elevation/upward rotation Adduction Downward rotation Abduction Upward rotation

lateral tilt

Lateral (Upward) Rotation: Conversely, inferior angle (bottom of the blade) moves superolaterally while the superior angle moves inferomedially again, using the glenoid fossa as the reference point.

muscles that produce shoulder adduction

Latissimus Dorsi Pectoralis Major Subscapularis Teres Major Teres Minor Coracobrachialis Triceps Brachi

Subscapularis fossa

Located anterior

pectoralis minor

Origin (Proximal/Anterior Attachment) ■ Ribs three through five Insertion (Distal/Posterior Attachment) ■ Coracoid process of the scapula

Pectoralis major

Origin (Proximal/Medial Attachment) ■ Medial clavicle, sternum, and the costal cartilages of ribs one through seven Insertion (Distal/Lateral Attachment) ■ Lateral lip of the bicipital groove of the humerus

Trapezius

Origin spinous processes of vertebrae C1-T12 it cant pull away from the spine

Subscapularis

Origin-scapula fossa insertion-lesser tubericle of the humerus Horizontal adduction, internal adduction, internal rotation

which muscle is superficial to each other rhomboid or trapezius

Rhomboids are underneath the trapezius

Row

Romboids chin ups scapular retraction

External rotation

Rotary movement around the longitudinal axis of the bone away from the center of the body; turning the upper arm outward. Typically accompanies Shoulder Girdle Retration. See shoulder external rotation inflexibility. Teres minor Infraspinatus Deltoid (posterior) Supraspinatus *

Internal rotation

Rotary movement around the longitudinal axis of the bone toward the center of the body; turning the upper arm inward. Typically accompanies Shoulder Girdle Protraction. See shoulder internal rotation inflexibility. Pectoralis major (sternal head) Pectoralis major (clavicular head) Latissimus dorsi Deltoid (anterior) Subscapularis Teres major Supraspinatus *

Why do rotator cuff injuries happen

Rotator cuff disease may be the result of either a substantial injury to the shoulder or to progressive degeneration or wear and tear of the tendon tissue. Repetitive overhead activity, heavy lifting over a prolonged period of time, and the development of bone spurs in the bones around the shoulder may irritate or damage the tendon Age. As you get older, your risk of a rotator cuff injury increases. Rotator cuff tears are most common in people older than 40. Certain sports. Athletes who regularly use repetitive arm motions, such as baseball pitchers, archers and tennis players, have a greater risk of having a rotator cuff injury. Construction jobs. Occupations such as carpentry or house painting require repetitive arm motions, often overhead, that can damage the rotator cuff over time. Family history. There may be a genetic component involved with rotator cuff injuries as they appear to occur more commonly in certain families. Complications Without treatment, rotator cuff disease may lead to permanent stiffness or weakness and may result in progressive degeneration of the shoulder joint. Although resting your shoulder is necessary for your recovery, keeping your shoulder immobilized for a prolonged time can cause the connective tissue enclosing the joint to become thickened and tight (frozen shoulder).

4 Anterior rotator cuff muscles

Subscapularis, superspinatus, infraspinatus and teres minor

3 posterior rotator cuff muscles

Supraspinatus, intraspinatus, teres minor

What happens when you squeeze your scapula together

The muscles in your chest that abduct your shoulder blades are your serratus anterior and your pectoralis minor. Makes sense, right? When those muscles contract, they pull toward the front and pull the shoulder blades apart. The muscles in your back that that adduct your shoulder blades are your middle trapezius and your rhomboid minor and major. Also makes sense! When those muscles contract, they pull toward the center of the back and pull the shoulder blades together. And you can see that the rhomboids being on a diagonal pull both up and in, so they both elevate and adduct.

what muscle does retraction, depression and upward rotation

Trapezius

shoulder joint movements

abduction, adduction, flexion, extension, internal rotation, Horizontal adduction, horizontal abduction external rotation

Lat pull down

abducts shoulder blades

romboids

adduct the scapula

rotator cuff

allows humeral rotation

what happens when the scapula Abducts

also called lateral glide The medial border of the scapula moves away from the vertebral column and the lateral angle moves anteriorly. Following the contour of the thorax, it assumes a posterolateral position in full abduction (also called protraction).

supraspinatus

attaches to greater tubercle superior part of the humerus. abducts

anterior tilt

deals with elevation

intraspinatus

external rotation, horizontal abduction extension head of the gleniod fossa

teres minor

external rotation, horizontal abduction, extension stabilization of humeral glenoid fossa

pec major

frequently injured during eccentric contractions ie: on the way down.

Glenohumeral joint

labrum enhances its stability

medial tilt

or Downward Rotation (Glenoid Fossa Moves Downward): Inferior angle (bottom of the blade) moves superomedially (up and toward the spine) as the lateral angle (nearest the humerus) moves inferolaterally (down and away from the midline). MY OWN WORDS bottom of the blade moves up and toward the spine as the area near the humerus moves down and away from the midline

seratus anterior origin and insertion

origin anterior surface of the first 8 or 9 ribs insertion anterior surface of the medial border of the scapula action abduction and upward rotation while its abducting the arm. pushups make it sore

what muscles lies on the ribs

seratus anterior

internal rotation

slumped shoulders A way to develop this posture is to have a workout program that is dominated by pressing movements. This is a common mistake among bodybuilders and men who want to develop their upper body. When you over develop the chest, front of the shoulder, and other internal rotators in relationship to the muscles of the back, a rounded shoulder posture is inevitable. When a person is in this postural position, the shoulder does not sit properly in the socket. This can lead to impingement issues, neck pain, a limited range of motion or even a subluxation of the shoulder.

what muscle works with the latisumus dorsi

the teres major helps the lats

Movements of the shoulder joint

• Scapula movement usually occurs with movement of humerus - Humeral flexion & abduction require scapula elevation, rotation upward, & abduction - Humeral adduction & extension results in scapula depression, rotation downward, & adduction - Scapula abduction occurs with humeral internal rotation & horizontal adduction - Scapula adduction occurs with humeral external rotation & horizontal abduction