Shoulder Joint

Share Post:

The humerus, scapula, & clavicle together makeup the shoulder girdle. The clavicle attaches to the sternum in the front body via a small disc of cartilage (referred to as the sternoclavicular joint). The clavicle is able to elevate, depress, protract, retract, & rotate. We experience downward & forward rotation of the clavicle in reverse prayer position. The other end of the clavicle attaches to the scapula (shoulder blade) & is bound together by several ligaments at the acromion process. This is the acromioclavicular (AC) joint & is the small bump we can palpate on top of the shoulder. The acromion is a small ledge of the scapula that sits on top of the humerus. At the top of the lateral edge of the scapula & just underneath the acromion process is a deep depression in the bone. This is referred to as the glenoid fossa & is where the head of the humerus sits (also referred to as the shoulder joint or glenohumeral joint). The scapula sits at about a 45 degree angle relative to the body. As the scapula is connected to the humerus, this creates a mirrored 45 degree angle from which the humerus is oriented to the body. Movements of the shoulder joint include flexion (arms overhead), extension (arms behind), abduction, adduction, & medial & lateral rotation. Once the humerus reaches the end of its range of motion (ROM), it will hit the acromion & begin to move the scapula as well. 

Stay Connected

More Updates

The Duality of Ahimsa

“Care of Others” vs. “Care of Self” The Three Gunas in Minimalism In the lens of ecosex & its overlaps with minimalism, the Yama, “Ahimsa”

Arm-Balance & Inversion Postures

As we have seen, any movement in hand affects the joints in the upper kinetic chain located above the hand. Namely, the elbow & shoulder joint. The muscles

Larissa Farrell

Ecosexual, environmentalist, rope switch, yogini, sex educator, & freelance writer. Like what you are reading & want to collaborate? Check out my freelance writing, design, & photography site.