Strong glenohumeral ligaments
What is the glenoid fossa?
The glenoid fossa is the socket of the shoulder joint . This part of the shoulder is a ball and socket joint. The head of the Humerus fits into the Glenoid fossa, though it is a shallow socket.
What is the function of glenoid fossa?
Strong glenohumeral ligaments and muscles prevents dislocation in most cases. By being so shallow the glenoid cavity allows the shoulder joint to have the greatest mobility of all joints in the body, allowing 120 degrees of unassisted flexion .
What does glenoid fossa mean in anatomy?
Medical Definition of glenoid fossa
: the depression in each lateral wall of the skull with which the mandible articulates .
What is the glenoid fossa of the scapula articulates and what purpose does it serve?
The glenoid cavity of the scapula (shoulder bone) articulates with the head of the humerus (upper-arm bone) at the shoulder joint, enabling the arm to move relative to the torso .
What is the glenoid process?
In scapula. ...presents a shallow cavity, the glenoid cavity, which articulates with the head of the bone of the upper arm, the humerus, to form the shoulder joint. Overhanging the glenoid cavity is a beaklike projection, the coracoid process , which completes the shoulder socket.
What are the internal rotators of the shoulder?
Subscapularis is the main internal rotator of the shoulder.
Which joint is in shoulder?
The glenohumeral joint is the one most people think of as the shoulder joint. It is formed where a ball (head) at the top of the humerus fits into a shallow cuplike socket (glenoid) in the scapula, allowing a wide range of movement.
What is the most mobile joint in the body?
[3][1][4] The glenohumeral joint ranks as the most mobile joint of the human body.
What are the three major articulations of the shoulder?
The shoulder girdle is composed of the clavicle and the scapula, which articulates with the proximal humerus of the upper limb. Four joints are present in the shoulder: the sternoclavicular (SC), acromioclavicular (AC), and scapulothoracic joints, and glenohumeral joint .
What is a Subscapular fossa?
: the concave depression of the anterior surface of the scapula .
Where is the glenoid fossa located dental?
THE glenoid fossae are depressions on the basal portion of the tem- poral bones of the skull . They furnish articular surfaces for the condylar processes of the mandible. If the mandible be considered a lever, these fossae furnish the points of resistance -for the fulcrum.
What is the glenoid of the shoulder?
The head of the upper arm bone (humeral head) rests in a shallow socket in the shoulder blade called the glenoid. The head of the upper arm bone is usually much larger than the socket, and a soft fibrous tissue rim called the labrum surrounds the socket to help stabilize the joint.
What is the main function of the scapula?
The scapula is an important bone in the function of the shoulder joint . It engages in 6 types of motion, which allow for full-functional upper extremity movement including protraction, retraction, elevation, depression, upward rotation, and downward rotation.
Which joint of the shoulder complex is the weakest?
The weakest area of the shoulder joint capsule is just anterior to the attachment of the long head of the triceps at the infraglenoid tubercle , and disloca- tions are most frequent in this inferior anterior region.
What structures help stabilize the shoulder joint?
The joint is stabilized by a ring of fibrous cartilage surrounding the glenoid, called the labrum . the joint. Four short muscles originate on the scapula and pass around the shoulder where their tendons fuse together to form the rotator cuff.
