Understanding Shoulder Anatomy and Common Disorders

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The shoulder is a complex joint consisting of multiple components like joints, muscles, ligaments, and capsules. Understanding its anatomy is crucial for diagnosing common disorders such as rotator cuff issues, tendinitis, tears, and frozen shoulder. History, examination, and palpation techniques are essential for assessing shoulder conditions, with a focus on identifying potential causes of pain and weakness. Images and descriptions provide insight into shoulder structure and functioning, aiding in differentiating between various shoulder conditions.


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  1. THE SHOULDER IN THE URGENT CARE CLINIC GREGORY JONES MD

  2. Actually four joints The shoulder consists of three joints: GLENOHUMERAL Sternoclavicular join Acromioclavicular joint Scapulothoracic joint

  3. MUSCLES SUPRASPINATUS: Abduction INFRASPINATUS: External rotation and adduction TERES MINOR: External rotation and adduction SUBSCAPULARIS: Internal rotation and adduction

  4. ROTATOROCUFF ANATOMY POSTERIOR VIEW

  5. ROTATOR CUFF ANATOMY ANTERIOR VIEW

  6. LIGAMENTS AND CAPSULE

  7. GLENOHUMERAL JOINT A CUP WITH MOBILE SIDE WALLS. ALLOWS FOR MOBILITY OF JOINT AND STRENGHT. SUBJECT TO INJURY.

  8. SHOULDER PAIN DIFFERENTIAL INFECTION-UNUSUAL ROTATOR CUFF IMPINGEMENT TENDONITIS,TENDON TEAR ("POPEYE MUSCLE") LABRUM TEAR (SLAP) FROZEN SHOULDER-ADHESIVE CAPSULITIS BURSITS-SUB ACROMION DISLOCATION -IS THIS THE FIRST TIME? ACUTE-PAIN,DECR ROM, XRAY CERVICAL RADICULAPATHY: SPURLING'S SIGN/TEST

  9. HISTORY ACUTE OR CHRONIC AGE 35-75: ROTATOR CUFF DISORDERS MOST COMMON PAIN WITH OVERHEAD REACHING, OCCUPATIONAL, REPETITIVE MOTIONS, PAIN WITH SLEEP ATHLETES WEAKNESS IS IT FROM PAIN OR TRUE WEAKNESS

  10. EXAMINATION LOOK FOR SCARS ATROPHY- (INFRASPINATUS,SUPRASPINATUS, DELTOID) SCAPULAR WINGING NEURO-MOTOR VASCULAR DIFFERENTIAL: CONSIDER CERVICAL RADICULOPATHY, PRIPHERAL NEUROPATHY ERYTHEMA HEAT

  11. PALPATION SC JOINT AC JOINT ACROMION CORACOID PROCESS BICIPITAL GROOVE LESSER AND GREATER TUBERCLE SCAPULA

  12. ROM SIX PLANES + ONE FORWARD ELEVATION 150-180 DEGREES EXTERNAL ROTATION 9O DEGREES ABDUCTION EXTERNA ROTATION AT SIDE ABDUCTION INTERNAL ROTATION (T4-T8) INTERNAL ROTATION ABDUCTION SCAPULA PLANE

  13. APLEY SCRATCH TEST

  14. SHOULDER TESTS SHOULDER TESTS SHOULDER IMPINGEMENT SYNDROME :TIGHT - CAN LEAD TO BURSITIS, TENDONITIS AND EVENTUALLY TEARS DROP ARM TEST FOR SUPRASPINATUS NEER TEST- TEST FOR SUB ACROMIAL IMPINGEMENT HAWKINS TEST- FORWARD FLEXION INTERNAL ROTATION "TRAFFIC COP" SIGN-TEST FOR SUPRASPINATUS "EMPTY CAN TEST" (JOBE TEST) -SUPRASPINATUS POSSIBLY MORE SPEED'S AND YEGERSON'S-BICIPTAL GROOVE OBRIAN'S-AC JOINT AND GLENOID LABRUM

  15. ROTATOR CUFF MUSCLES (SITS) SYMPTOM'S: POSTERIOR SHOULDER PAIN,WEAKNESS, NIGHT PAIN SUPRASPINATUS-EMPTY CAN SIGN (JOBE), NEER TEST , HAWKINS AND DROP ARM TEST INFRASPINATUS EXTERNAL ROTATOR TERES MINOR- EXTERNAL ROTATORS-SUBSCAPULARIS- INTERNAL ROTATION- LIFT OFF, BELLY PRESS TESTS

  16. BICEPS BICIPITAL GROOVE PAIN SPEED'S TEST: FORWARD ELEVAT SHOLDER AGAINST RESISTANCE METHOD:WITH ELBOW EXTENDED AND FOREARM SUPINATED. POSITIVE WHEN THERE IS PAIN IN BISIPITAL GROOVE YERGASON'S SIGN: POSITIVE WHEN THERE IS PAIN IN BICIPITAL GROOVE. METHOD: ELBOW AT 90 DEGREES, FOREARM PRONATED. PATIENT ATTEMPTS TO ACTIVELY SUPINATE FOREARM AGAINST RESISTANCE. "POPEYE" SIGN: C/W WITH TEAR OF LONGHEAD OF BICEPS

  17. AC JOINT LOCAL TENDERNESS CROSS-BODY ADDUCTION OBRIEN'S TEST THIS TEST FOR SLAP TEARS BUT MAY BE POSITIVE WITH AC PROBLEMS

  18. INSTABILITY VARIOUS TEST FOR SHOULDER DISLOCATION AND RELCATION SULCUS SIGN

  19. GLENOHUMERAL INSTABILITY TEST APPREHENSION TEST

  20. SHOULDER INSTABILITY A: APPREHENSION B: RELOCATION

  21. EXCELLENT REFERENCES https://www.aafp.org/afp/2008/0215/p453.html https://www.aafp.org/afp/2008/0215/p493.html https://www.aafp.org/afp/2016/0715/p119.html

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