MOVEMENTS OF SHOULDER JOINT

  • Movement in every direction (Flexion, extension, abduction, adduction, rotation, circumduction)
  • Spinal Cord regulating Shoulder movements (C5, C6, C7 & C8)
  • oFlexion, Abduction, & lateral rotation (C5, C6,).
  • oExtension, Adduction, & Medial rotation is (C6, C7, C8)
  • Movements that take place during abduction of shoulder are axial rotation of humerus at acroclavicular joint ,elevation of humerus & movement at clavicular end of sternoclavicular joint.

TYPE OF MOVEMENT PLANE OF MOTION AXIS OF MOTION MUSCLES INVOLVED HUMERAL HEAD GLIDING RANGE OF MOTION FACTOR LIMITING
Flexion Saggital plane Transverse axis Pectoralis Major,Ant. fiber of deltoid,
Coraco-brachialis, Biceps
Posteriolaterally in glenoid cavity 0-90º Inferior Glenohumeral ligament,
Tightness of posterior joint capsule
Extension Saggital plane Transverse axis Latissimus dorsi,Teres major,Post.
fibersof deltoid, Triceps
Anteriomedially in glenoid cavity 0-45º or 60º Superior & medialgleno-humeralligament
Abduction Frontal plane Saggital axis Deltoid, Supraspinatus Inferiorly in glenoid cavity Total-0-165º or 175º
Full internal rotation ofhumerus0-60º
Full external rotation ofhumerus0-90º
-Inferior glenohumeral ligament-Tightness of the inferior joint capsule of the gleno-humeral joint
Adduction Frontal plane Saggital axis Subscapularis,Pectoralis Major,
Latissimus dorsi, Teres major
Superiorly in glenoid cavity - Trunk
Internal Rotation Transverse plane vertical axis Subscapularis,Pectoralis Major,
Latissimus dorsi, Teres major
Posteriolaterally in glenoid cavity -0-70º as the arm at 90º ofshoulder abduction and 90ºelbow flexion-
If the elbow is extended, shoulderrotation occurs simultaneously with forearm rotation.
Posterior capsule
External Rotation Transverse plane vertical axis Infraspinatus, Teres minor Anteriomedially in glenoid cavity -0-90º as the arm at 90º ofshoulder abduction and 90ºelbow flexion-
If the elbow is extended, shoulderrotation occurs simultaneously withforearm rotation.
-Coracohumeral ligament-
3 glenohumeral ligaments
NOTE: Circumduction:it is a combination of flexion, abduction, extension, and adduction or in the reversed sequence
  • Glenohumeral flexion -> abduction ->extension ->adductiong
  • Glenohumeral extension ->abduction -> flexion -> adduction
Exam Question
  • Movements that take place during abduction of shoulder are axial rotation of humerus at acroclavicular joint ,elevation of humerus & movement at clavicular end of sternoclavicular joint.
  • Movement in every direction (Flexion, extension, abduction, adduction, rotation, circumduction)
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