What is the action of anterior fibres of deltoid?
Multipennate acromial fibres are powerful abductors of arm at the shoulder joint from beginning to 90deg.Extension and lateral rotation of arm is mediated by the posterior fibres.Flexion and medial rotation is mediated by the anterior fibres.B D Chaurasia 7th edition Page no: 70,71
Flexion
Lateral Rotation
Flexion and medial dotation
Extension and lateral rotation
Upper limb