Define glenohumeral joint.
The joint connecting the humerus to the scapula, allowing a wide range of shoulder movements.
What type of joint is the glenohumeral joint?
It is a ball-and-socket joint, providing multi-directional movement.
True or false: The glenohumeral joint is the most mobile joint in the body.
TRUE
Its structure allows for extensive range of motion.
Fill in the blank: The glenoid cavity is part of the ______.
Scapula
What is the primary function of the glenohumeral joint?
To facilitate shoulder movement including flexion, extension, abduction, and rotation.
Name the ligament that stabilizes the glenohumeral joint.
The glenohumeral ligaments provide stability to the joint.
True or false: The rotator cuff muscles support the glenohumeral joint.
TRUE
The rotator cuff consists of four muscles that stabilize the joint.
What is the role of the labrum in the glenohumeral joint?
The labrum deepens the glenoid cavity, enhancing joint stability.
Fill in the blank: The glenohumeral joint allows for _______ rotation of the arm.
Internal and external
What is a common injury associated with the glenohumeral joint?
Shoulder dislocation is a common injury affecting this joint.
Define shoulder impingement.
A condition where shoulder tendons are irritated and inflamed during arm movement.
True or false: The glenohumeral joint is less prone to injuries than other joints.
FALSE
Its high mobility makes it more susceptible to injuries.
What is the subacromial bursa?
A fluid-filled sac that reduces friction between the shoulder joint and surrounding structures.
Fill in the blank: The humeral head fits into the ______ of the scapula.
Glenoid cavity
What movements are restricted by the glenohumeral joint?
It restricts excessive lateral movement and extreme ranges of rotation.
True or false: The glenohumeral joint can only perform flexion and extension.
FALSE
It also performs abduction, adduction, and rotation.
What is the scapulothoracic joint?
An articulation between the scapula and the thoracic rib cage, aiding shoulder movement.
Fill in the blank: The glenohumeral joint is surrounded by a _______ capsule.
Synovial
What is the primary muscle responsible for shoulder abduction?
The deltoid muscle primarily facilitates shoulder abduction.
Define shoulder instability.
A condition where the glenohumeral joint frequently dislocates or feels loose.
True or false: The glenohumeral joint can be affected by arthritis.
TRUE
Arthritis can lead to pain and reduced mobility in the joint.
What is the function of the rotator cuff?
To stabilize the glenohumeral joint and allow for smooth shoulder movements.
Fill in the blank: The glenohumeral joint is innervated by the _______ nerve.
Axillary
What is the common treatment for glenohumeral joint dislocation?
Reduction and rehabilitation exercises are common treatments for dislocation.
