[CORRECT] Kines Shoulder Complex

The collection of bones, joints, and muscles that make up the shoulder, allowing for a wide range of motion and functional significance.

Enumerate the 6 functional significance of the shoulder complex

True joints or bony articulations of the shoulder complex

False joints or functional articulations of shoulder complex.

The long bone that lies horizontally at the root of the neck, providing lateral strut support and shock absorption for the shoulder complex.

Part of clavicle where it is convex anteriorly and concave posteriorly

Part of clavicle where it is concave anteriorly and convex posteriorly

It is the weak spot of the clavicle.

The large, flat triangular bone on the posterior thoracic wall, providing attachment sites for muscles and contributing to shoulder movement and stability.

Scapula lies on the ______ to _______ rib

Superior/Superomedial angle of scapula is a landmark of _________.

Spinous process of scapula is a landmark of _________.

Inferior angle of scapula is a landmark of _________.

The longest and largest bone of the upper extremity, consisting of the humeral head, anatomical neck, surgical neck, and tuberosities, and allowing for movement and stability of the shoulder complex.

Part of humerus where it forms 1/3 or ½ of a sphere.

Part of humerus considered as the end connection of the joint capsule.

Most common site of humeral fracture.

The breastbone, consisting of the manubrium, body, xiphoid process, and sternal angle, providing attachment sites for muscles and contributing to shoulder stability.

Formed by the junction of the manubrium and body of the sternum.

Formed by the cartilage of some of the lower ribs of each side as they ascend to attach to the sternum.

The bony articulations (sternoclavicular joint, acromioclavicular joint, glenohumeral joint) that directly connect the upper extremity to the thorax and allow for movement and stability of the shoulder complex.

The functional articulations (scapulothoracic articulation, bicipital groove, subacromial joint) that contribute to shoulder mobility and stability, but are not true anatomical joints.

Functions of the Scapulothoracic joint.

Muscular boundaries of the bicipital groove of humerus

Also known as the suprahumeral articulation, it is the structure that overlies the subacromial bursa and protects the top of the humeral head, muscles, tendons, and bursae from direct trauma.

Structures within the subacromial joint.

The double plane or sellar joint between the sternal end of the clavicle, manubrium sterni, and 1st costal cartilage, providing stability and allowing for movement of the shoulder complex.

It is the only bony articulations that directly connect the UE to the thorax - "Base of Operation" for the scapula.

The plane joint between the lateral end of the clavicle and the acromion process, providing stability and allowing for movement of the shoulder complex.

An accessory structure of the SC joint that separates the joint into two synovial cavities and also provides congruency of the SC joint.

This ligament prevents both upward and lateral displacement of clavicle.

The ligament that prevents anterior displacement of clavicle.

The ligament that prevents posterior displacement of clavicle.

Enumerate the 3 planes and 3 axes of the SC Joint.

It is the motion of SC disc wherein it becomes part of the Sternum

It is the motion of SC disc wherein it becomes part of the Clavicle

The ligament that assists the capsule and controls the horizontal joint stability.

A ligament that is a primary restraint against inferior stability of clavicle.

A ligament that restraints clavicle against superior instability

Enumerate the 3 planes and 3 axes of the AC joint.

The movement of the AC joint where the glenoid fossa tilts superiorly.

The movement of the AC joint where the glenoid fossa tilts inferiorly.

The movement of the scapula where it moves anteromedially based on the glenoid fossa or acromion process.

The movement of the scapula where it moves posterolaterally based on the glenoid fossa or acromion process.

The movement of the scapula where the acromion moves anteriorly and the inferior angle moves posteriorly.

The movement of the scapula where the acromion moves posteriorly and the inferior angle moves anteriorly.

Axis of the upward/downward rotation of AC joint

Axis of the Internal/External Rotation

Axis of the anterior/posterior tilting

A ball-and-socket joint with 3 degrees of freedom, consisting of the articulations between the humeral head and the glenoid fossa.

Orientation of the humeral head.

Orientation of the glenoid fossa.

The angle formed by the axis of the humeral head and neck and the humeral condyles.

The angle formed by the longitudinal axis of the humeral shaft and the humeral head and neck.

It is the angle of inclination of the GH joint.

A shallow cavity that forms part of the glenohumeral joint.

A ring of cartilage that surrounds and is attached to the periphery of the glenoid fossa, providing enhancement to the joint.

A large and loose capsule that tightens during shoulder abduction and external rotations.

Enumerate possible reasons why GH joint is easily dislocated.

Movements of the AC joint during shoulder abduction

Movements of the SC joint during shoulder abduction

GH joint slides ______________ during external rotation

GH joint slides ______________ during internal rotation

GH joint slides ______________ during shoulder abduction.

GH joint slides ______________ during shoulder adduction.

A ligament that prevents dislocation of the long head of the biceps brachii and prevents antero-inferior translation.

Ligaments that form a "Z" on the anterior capsule and tighten during external rotation and anterior glide of the humeral head.

A ligament that prevents anterior and inferior translation with the hands at the side (0 deg)

A ligament that prevents anterior translation (0 - 60 deg)

A ligament that prevents anterior translation and inferior translation (>45 deg) at the end of elevation.

It is the clear area of weakness between the superior and middle GH ligament.

The coordinated movement between the scapula and humerus during shoulder abduction, with a 2:1 ratio of motion at the glenohumeral joint and scapulothoracic joint.

A small triangular fibrous band that runs from the upper border of the scapula to the base of the coracoid process.

A ligament that runs from the lateral border of the scapular spine to the margin of the glenoid cavity, forming a foramen for the passage of nerves.

A muscle of the shoulder girdle that is important in raising the arm overhead and is known as the "SAW MUSCLE."

It is the strongest portion of the muscle is the last 5 digitations that converge on the inferior angle. It is also important in PUSHING and REACHING activities.

Paralysis of this muscle still allow arms to be raised overhead but shoulder slopes down shifting the orientation of the glenoid fossa resulting to humeral head subluxation

Muscles that, along with the middle and lower trapezius, are important in maintaining good shoulder posture and stabilizing during abduction.

A muscle that participates in scapular rotation, upward tilt, depression, abduction, and lateral tilt.

A large superficial muscle responsible for the roundness of the shoulder and covers the glenohumeral joint on all sides except the axilla.

Muscles closely related in location and action, supplied by two different nerves.

The only rotator cuff muscle that inserts into the lesser tubercle and is the chief internal rotator of the shoulder.

A round muscle located at the axillary border of the scapula, acts in most pulling activities when the shoulder is extended or adducted against resistance.

Muscles that cross the shoulder joint and have different actions, with the biceps being a flexor and an abductor, and the triceps being an extensor and an adductor of the glenohumeral joint.

The broadest muscle of the back and lateral thoracic region, helps in lifting the pelvis when the arms are stabilized.

Enumerate the activities where pectoralis major is important.

A large muscle of the chest that is important in pushing, throwing, and punching activities.

The stability of the shoulder joint provided by the deltoid, rotator cuffs, supraspinatus, and long head of the biceps brachii.

Enumerate the factors affecting the dynamic stability of shoulder joint.

Enumerate the factors that contributes in the deltoid and GH stabilization.

Enumerate the factors that contributes to the static stabilization of the GH joint.

It is a factor that affects dynamic stability and it means two opposing forces creating tension.

It is a force directed upward.

It is a force directed downward.

In the dynamic stabilization of deltoids and GH, it has a larger _________ TF and smaller _______ TF.

In the dynamic stabilization of rotator cuff and GH, it has a larger _________ TF and smaller _______ TF.