Biomechanics of shoulder and elbow

Question 1

Mechanism of vacuum effect of shoulder

Answer 1

Intra articular pressure: Negative intra articular pressure

Suction effect: Glenoid labrum provides a suction effect on humeral head

Adhesion- cohesion: 2 wet surfaces of humeral head and glenoid create adhesion- cohesion bond when coming into contact with each other