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Describe the main bones involved in the shoulder joint.
Press to flip
Humerus and scapula.
Name the ligament that extends from the coracoid process to the humerus.
Coracohumeral Ligament.
What are the functions of the muscles Teres Major and Triceps Brachii (Long Head) in the shoulder joint?
Teres Major enhances lower joint stability, while Triceps Brachii spans the joint.
Explain the clinical implications of Subacromial Bursitis.
Inflammation from overuse or trauma affecting supraspinatus movements, leading to painful arc syndrome.
What are the features of the humerus that were discussed?
Articular surface, Lesser and greater tubercles, inter-tubercular groove, anatomical neck.
What movements are possible at the shoulder joint?
Flexion, extension, abduction, adduction, medial and lateral rotation, circumduction.
What type of joint is the shoulder joint?
Ball-and-socket synovial joint.
What muscles are involved in providing lower joint stability in the shoulder?
Teres Major.
Explain the role of the Joint Capsule in the shoulder joint.
It envelops the humeral head, extends to the anatomical neck of the humerus, and contains synovial fluid.
Describe the Glenoid Cavity/Fossa and its significance in the shoulder joint.
A shallow, poorly supportive socket enhanced by the glenoid labrum increasing depth.
What is the purpose of the Subtendinous Bursa of Subscapularis?
It reduces friction under the tendon of subscapularis.
What is the function of the Coracoacromial Ligament?
Forms a protective arch over the shoulder joint.
Which bursa reduces friction between the acromion process and the supraspinatus tendon?
Subacromial Bursa.
Which muscles make up the rotator cuff muscles and what are their functions?
Supraspinatus (superior stability), Infraspinatus (posterior stability), Teres Minor (posterior stability), Subscapularis (anterior stability).
Describe the location and function of the Glenohumeral Ligaments.
They enhance anterior stability and help prevent inferior displacement in the shoulder joint.
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