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BIOMECHANICS OF THE SHOULDER COMPLEX Sternum Clavicula Scapula Humerus Glenohumeralis Acromioclavicularis Sternoclavicularis Scapulothoracalis.

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Presentation on theme: "BIOMECHANICS OF THE SHOULDER COMPLEX Sternum Clavicula Scapula Humerus Glenohumeralis Acromioclavicularis Sternoclavicularis Scapulothoracalis."— Presentation transcript:

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2 BIOMECHANICS OF THE SHOULDER COMPLEX

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5 Sternum Clavicula Scapula Humerus Glenohumeralis Acromioclavicularis Sternoclavicularis Scapulothoracalis

6 GLENOHUMERAL JOINT

7 1/3 - 1/4 Diameter: mmDiameter: 41 mm 25 mm

8 Angle of inclination Angle of torsion 30°

9 Synovial sheath Glenoid cavity When the arm is at rest at the side, the large capsule is taut superiorly and lax inferiorly

10 Greater tuberosity

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12 FRONTAL PLANE SAGITTAL PLANE SCAPULLAR PLANE degrees

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18 : The labrum broadens and makes deeper the glenoid socket (top image). The labrum also acts as an anchoring point for the ligaments of the shoulder (lower image).

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20 The normal main ligament of the shoulder (inferior glenohumeral ligament) supports the humeral head like a hammock supports a person (top image). With arm rotation, the ligament (hammock) moves forward and backward to keep the ball in the socket during this rotation (lower image).

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30 Arm elevation Flexion Abduction Flexion and abduction Extension

31 Horizontal plane 30-45° ° 15-30° 90°

32 Flexion and extension in horizontal plane extension flexion

33 Flexion-extension

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35 degrees 30 degrees Sagittal plane Extension Flexion

36 Abduction - adduction

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39 90-110° Távolítás Gördülés 60° Befelé fordítás Neutrális és lapocka sík

40 Gördülés Távolítás Passzív

41 Távolítás

42 75 o 40 o sternoclavicularis 20 o acromioclavicularis Frontal plane 120 o glenohumeral Abduction o 135 o 90 o active 120 o passive

43 TÁVOLÍTÁS ABDUCTION ROLLING SLIDING active passive

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46 Rotáció 50°120 °

47 70° 50° 30°20° KifeléBefelé

48 Throwing armContralateral Herrington 1988 External and internal rotation

49 SCAPULOTHORACIC JOINT

50 Depression Elevation Tipping of the scapula

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54 Közelítés -távolítás

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57 Winging of the scapula

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61 Downward rotationUpward rotation

62 0-30° 30-60° 60-90° ° ° Centre of rotation of scapula during abduction

63 MOVEMENT IN STERNOCLAVICULAR AND ACROMIOCLAVICULAR JOINTS

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65 CENTRE OF ROTATION 30°

66 MOVEMENT IN SCAPOLOTHRACIC AND GLENOHUMERALIS JOINTS

67 ACROMIOCLAVICULAR JOINT Scapular rotation: protraction-retraction Scapular rotation around transverse axis 60° 30° Scapular rotation in sagittal plane: elevation-depression 30°

68 60° 30° Scapula forgás előre - hátra Scapula forgás a transverzális tengely körül Scapula forgás oldal síkban: emelkedés - süllyedés

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70 STERNOCLAVICULARIS IZÜLET

71 15 ° 45 / 15 ° ° Rotation about the longitudinal axis Movement in sternoclavicularis joint Elevation and depression Anterior – psoterior movement

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74 Az egyes izmok bekapcsolódása a munkavégzésbe

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76 Az egyes izmok bekapcsolódása a munkavégzésbe

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81 0.05 Bw 0.3 m 0.03 m 0.6 m Bw Fc = Fp sin

82 Winging of the scapula

83 Tipping of the scapula

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