Introduction  The function of the shoulder allows the greatest range of motion of any joint in the body.  This great range of motion can also lead to several common problems affecting the shoulder joint.  In other words, the shoulder is built for motion, not stability

Considerations  What happens to the ROM during flexion if the arm is externally and internally rotated? Why?  Which arm can you reach furthest up your back with?  Why?

Bones  The bones of the shoulder include the humerus, the scapula, and the clavicle. bones  A “roof” of the shoulder is formed by a part of the scapula called the acromion.

Joints  There are actually two joints around the shoulder joints  The glenohumeral joint or the shoulder joint  The acromioclavicular (AC) joint where the clavicle meets the acromion.

Joint Capsule  The joint capsule is made by a group of ligaments that connect the humerus to the socket of the shoulder joint on the scapula. joint capsulejoint capsule  Three ligaments are the main source of stability for the shoulder, and help to keep the shoulder from dislocating.  Coracohumeral ligament  Middle glenohumeral ligament  Inferior glenohumeral ligament

Bursa  Sandwiched between the rotator cuff muscle layer and the outer layer of large bulky muscles is a structure known as a bursa. bursa  A bursa is simply a closed space between two moving surfaces that has a small amount of lubricating fluid inside

Ligaments  Ligaments are soft tissue structures that connect bones to bones.  The acromioclavicular ligaments that attach the clavicle to the acromion  The coracoclavicular (2) ligaments connects the clavicle to the coracoid process.  The coracoacromial ligament connects the coracoid process and the acromion process Coracoacromia l ligament

coracoacromial coracoclavicular

A Guide to Shoulder Problems htm

Shoulder Injuries 1.Impingement/Bursitis Impingement/Bursitis 2.Rotator Cuff Tear Rotator Cuff TearRotator Cuff Tear 3.Acromioclavicular(AC) Joint Separation Acromioclavicular(AC) Joint SeparationAcromioclavicular(AC) Joint Separation 4.Shoulder Instability Shoulder InstabilityShoulder Instability 5.Labral Tear Labral TearLabral Tear

Impingement Syndrome

 The supraspinatus tendon connects the humerus with the scapula (shoulder blade) and helps raise and rotate the arm. raise  As the arm is raised, the supraspinatus tendon also keeps the humerus tightly in the socket (glenoid) of the scapula.  As the arm is raised, the supraspinatus tendon also keeps the humerus tightly in the socket (glenoid) of the scapula. humerus

Impingement Syndrome  The part of the scapula that makes up the roof of the shoulder is called the acromion process.  The part of the scapula that makes up the roof of the shoulder is called the acromion process.  Between the acromion process and the supraspinatus tendon there is a bursa.  Between the acromion process and the supraspinatus tendon there is a bursa.  The bursa is a lubricated sac of tissue that protects the muscles and tendons as they move against one another.  The bursa is a lubricated sac of tissue that protects the muscles and tendons as they move against one another.  The bursa simply allows the moving parts to slide against one another without too much friction.

Impingement Syndrome

 If any condition decreases the amount of space between the acromion and the supraspinatus tendon, the impingement process may get worse.  Swelling  Bone spurs  Anatomical structure  Anatomical structure

Impingement Syndrome

Impingement can create either bursitis, or tendonitis depending on what structure is being squeezed Overhead athletes are more likely to have problems with this injury 1/3 of shoulder problems are due to impingement

 Signs and Sx  Pain and tender GH joint  Pain and weak active abd in mid range  Limited internal rotation  + Hawkins Test  Tender subacromial area possibly into the deltoid  Treatment  Correct technique  Strengthen inferior muscles  Strengthen weak rotator cuff muscles

Rotator Cuff Tears

Rotator cuff  Subscapularis  Supraspinatus  Infraspinatus  Teres minor

Movement of RC Muscles  Subscapularis is an internal rotator of the arm.  Supraspinatus assists the deltoid in abducting the arm, with its greatest contribution being the initiation of abduction.  Infraspinatus and teres minor muscles both externally rotate the arm.

 In the young person it is more of a traumatic injury, more of a traumatic injury, fall on outstretched arm, fall on outstretched arm, arm yanked back. arm yanked back.  Young person can have chronic injury that ultimately tears a tendon. chronic injury that ultimately tears a tendon.  In the older person it is a result of lose of elasticity in the muscle and tendon and can tear with everyday activities or a bone spur.

 Signs and Sx  With a parcial tear the athlete will feel pain but still be able to move with normal ROM.  With a complete tear the athlete will not have normal ROM.  Overhead motions are hardest.  A shrug motion will result.  Pain sleeping on injured side.

Note: Surgery needs to be performed within 3 months or the supraspinatus muscle will atrophy and be too short to reattach

Shoulder Separation

 A shoulder separation is a fairly common injury, especially in an athletic population.  A shoulder separation is a fairly common injury, especially in an athletic population.  A shoulder separation is actually a dislocation of the acromioclavicular (AC) joint.  A shoulder separation is actually a dislocation of the acromioclavicular (AC) joint.  Some people mistake this for a shoulder dislocation, and vice versa.  Some people mistake this for a shoulder dislocation, and vice versa.  This is a very different injury than a shoulder dislocation.  This is a very different injury than a shoulder dislocation.

Grades of Shoulder Separation

Shoulder Separation  The most common cause of an acromicoclavicular (AC) joint separation is a fall on the shoulder.  The most common cause of an acromicoclavicular (AC) joint separation is a fall on the shoulder.  As the shoulder strikes the ground, the force from the fall pushes the scapula down.  As the shoulder strikes the ground, the force from the fall pushes the scapula down.  The clavicle, because it is attached to the rib cage, cannot move down enough to follow the motion of the scapula.  The clavicle, because it is attached to the rib cage, cannot move down enough to follow the motion of the scapula.  Something has to give, and the ligaments around the acromioclavicular (AC) joint begin to tear - separating, or dislocating, the joint.  Something has to give, and the ligaments around the acromioclavicular (AC) joint begin to tear - separating, or dislocating, the joint.

 Signs and Sx  deformity  Pain in vicinity of AC  Treatment  Three grades –the grade determines treatment  Grade one is exercise and ice  Grade two immobilize 3 weeks and then exercise  Grade three immobilize 5 weeks and then exerccise

Shoulder Dislocation & Instability

Shoulder Dislocation  If the shoulder slips completely out of the socket, it has become dislocated.  If the shoulder slips completely out of the socket, it has become dislocated.  97 out of 100 dislocations are anterior.  3 out of 100 dislocate posteriorly.  Repeated dislocations are not only a nuisance, but can cause further injury to the shoulder and can lead to arthritis of the shoulder if not treated.

Shoulder Subluxation  The ligaments that make up the joint capsule have a considerable amount of slack, or looseness, so that the shoulder is unrestricted as it moves through its rather large range of motion.  The ligaments that make up the joint capsule have a considerable amount of slack, or looseness, so that the shoulder is unrestricted as it moves through its rather large range of motion.  Sometimes the shoulder does not come completely out of the socket but slips partially out and then returns to its normal position. This is called subluxation.  Sometimes the shoulder does not come completely out of the socket but slips partially out and then returns to its normal position. This is called subluxation.

Shoulder Instability  Instability means that the shoulder is too loose and has a tendency to slip out of the socket, (or glenoid fossa).  Instability means that the shoulder is too loose and has a tendency to slip out of the socket, (or glenoid fossa).  This initial injury is usually fairly significant and the shoulder must be reduced, or put back into the socket, by a physician.  This initial injury is usually fairly significant and the shoulder must be reduced, or put back into the socket, by a physician.  After that first violent injury that causes the shoulder to dislocate, the joint may remain unstable.  After that first violent injury that causes the shoulder to dislocate, the joint may remain unstable.  The ligaments that are supposed to hold the shoulder in the socket may not heal back properly, or they may remain stretched and too loose to keep the shoulder in the socket in certain positions.  The ligaments that are supposed to hold the shoulder in the socket may not heal back properly, or they may remain stretched and too loose to keep the shoulder in the socket in certain positions.

Glenoid Labrum

Labral Tear  A part of the scapula, called the glenoid cavity, makes up the socket of the shoulder.  A part of the scapula, called the glenoid cavity, makes up the socket of the shoulder.  This socket is very shallow and flat.  This socket is very shallow and flat.  To make the socket more like a cup, there is a rim of soft tissue called the labrum.  To make the socket more like a cup, there is a rim of soft tissue called the labrum.

Labral Tear  The labrum acts sort of like a gasket, turning the flat surface of the glenoid into a deeper socket that molds to the head of the humerus for a better fit.  A tear of labrum can cause a very difficult to diagnose problem of pain and a catching sensation with movement of the shoulder.  A tear of labrum can cause a very difficult to diagnose problem of pain and a catching sensation with movement of the shoulder.

Labral Tear  This tissue can be caught between the socket and the humerus and be torn.  This flap of tissue can move in and out of the joint, getting caught between the humeral head and glenoid socket, and cause pain and catching.  This flap of tissue can move in and out of the joint, getting caught between the humeral head and glenoid socket, and cause pain and catching.  The labrum is also the area for attachment of several of the tendons and ligaments of the shoulder.  The labrum is also the area for attachment of several of the tendons and ligaments of the shoulder.  The ligaments that attach to the labrum help with maintaining the stability of the shoulder.  The ligaments that attach to the labrum help with maintaining the stability of the shoulder.

Labral Tear  Most labral tears are probably the result of an injury to the shoulder, such as falling on an outstretched hand.  Most labral tears are probably the result of an injury to the shoulder, such as falling on an outstretched hand.  There is reason to believe that the excess motion of the humerus moving around on the glenoid may cause damage to the labrum over time.  There is reason to believe that the excess motion of the humerus moving around on the glenoid may cause damage to the labrum over time.  An unstable shoulder may also cause injury to the labrum, if it repeatedly dislocates out of the glenoid.

Exercises  

Shoulder action = ? Shoulder muscle(s) = ? Scapula action = ? Scapula muscle(s) = ? Abduction Deltoid Upward Rotation Ser. Ant., Trap (lower)

Shoulder action = ? Shoulder muscle(s) = ? Flexion Ant Deltoid Upper Pect Major Coracobrach

Shoulder action = ? Shoulder muscle(s) = ? Scapula action = ? Scapula muscle(s) = ? Horz. Add. Ant. Deltoid Pect. Major Coracobrach. Abduction Pect. Minor Ser. Ant.

Scapula action = ? Scapula muscle(s) = ? Elevation Lev. Scap. Rhomboids Up. & Mid. Trap

Shoulder action = ? Shoulder muscle(s) = ? Scapula action = ? Scapula muscle(s) = ? Hor. Abd Lat. Post. Deltoid Teres Minor Infraspinatus Adduction Rhomboid Upper and Mid. Trap.

Shoulder action = ? Shoulder muscle(s) = ? Scapula action = ? Scapula muscle(s) = ? Adduction Pect. Major Coracobrach. Lat. Teres Major Downward Rotation Pect. Minor Rhomboid

Shoulder action = ? Shoulder muscle(s) = ? Scapula action = ? Scapula muscle(s) = ? Horizontal Add Ant. Deltoid Pect. Major Coracobrach. Adduction Rhomboid Upper and Mid. Trap.

Shoulder action = ? Shoulder muscle(s) = ? Scapula action = ? Scapula muscle(s) = ? Extension Lats Teres Minor Post. Deltoid Adduction Rhomboid Upper and Mid. Trap.

Shoulder action = ? Shoulder muscle(s) = ? External Rotation Infrspinatus Teres Minor

Rotator Cuff Exercises Internal Rotation External Rotation Internal Rotation

Rotator Cuff Exercises External Rotation Internal Rotation Abduction (to work the supraspinatus)

What position are her shoulders in? Flexion

What rotation action is his shoulder performing as he continues to through the ball? Internal Rotation

What position is his right shoulder in? Horizontal Abduction and External Rotation

What position are her shoulders in? Flexion

What position are his shoulders in? Horizontal abduction or Extension

1. 2. Flexion Extension Position of their shoulders?

Position of his scapula? Upward Rotation Position of his shoulder? Abduction

What is the position of scapula? Adduction What is the position of shoulder? Extension