GLENO HUMERAL JOINT STRUCTURE (SHOULDER JOINT COMPLEX BIOMECHANICS)Physiotherapy Tutorials

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GLENOHUMERAL JOINT STRUCTURE (SHOULDER JOINT COMPLEX BIOMECHANICS)Physiotherapy Tutorial
Reference book for this video :Cynthia norkins
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summary of the video with the time for reference:
1.Proximal articulating surface 1:15
-upwardly tilted
-retroversion/anterior tilt
-It has a small radius which is increased by articular cartilage ehich is thin at the center and thick at periphery
2.Distal articulatioN 2:56
-head of humerus
-only 1/3rd surface area is covered
-Angle of inclination -135 degree
-Angle of torsion -30 degree
-Higher anterior torsion means high chances of anterior dislocation
-Higher posterior torsion means high chances of posterior dislocation
3. Labrum 5:45
-Increases in surface area
-Increase in depth of socket
-loose superiorly near biceps attachment where SLAP injury that is superior labrum anterior posterior takes place.
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#biomechanicsofshoulderjointinhindi#shoulderjointanatomyand biomechanics#shoulder jointcomplexbiomechanics#shouldercomplex biomechanics#biomechanicsofshoulderjoint#biomechanicsofshoulderjointppt

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@snehapanwar1826 2 жыл бұрын

You are amazing ❤️ can u believe our professor didn’t taught us anything I’m studying and able to understand only through ur videos… thank u soooooo much for helping me out!!!

@MovementScience8 2 жыл бұрын

Really means alot!! Thank you for your support💪

@MovementScience8 2 жыл бұрын

**CORRECTION** Throwing athletes might not have higher chance of posterior dislocation. Its just that such kind of adaptation is seen probably because their arm always goes for abduction and external rotation which is common mechanism of injury for the anterior dislocation. Reduced retroversion (or anteversion) results in a more anterior position of the humeral head on the glenoid surface when the arm is in an anatomically neutral position. Humeral anteversion can result in an increased range of medial rotation of the humerus and a reduced range of external rotation that places the humeral head at risk for anterior subluxation at the end range. Increased retroversion results in a more posterior position of the humeral head on the glenoid surface when the arm is in an anatomically neutral position. Humeral retroversion can result in increased range of external rotation of the humerus and a reduced rang of medial rotation that puts the humeral head at risk for posterior subluxation at end range. Increased GH external rotation and decreased GH medial rotation have been demonstrated in the dominant arm of throwing athletes, and evidence suggests that an increase in humeral retroversion may be one contributing mechanism for this ROM adaptation. Hope this makes sense! sorry for the confusion!!