Joints of the Upper Limb
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| show | Saddle type joint; only joint between upper limb and axial skeleton; clavicle holds up upper limb away from chest
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| show | Anterior and posterior sternoclavicular ligaments; COSTOCLAVICULAR LIGAMENT (main support of joint)
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| Where is the acromioclavicular joint? | show 🗑
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| What is the coracoclavicular ligament? | show 🗑
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| What is the acromioclavicular dislocation? What causes it? | show 🗑
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| What is the articulation of the shoulder joint? | show 🗑
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| show | rim of fribocartilage surrounding the glenoid cavity
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| Where is the articular surface of the glenohumeral joint weakest? | show 🗑
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| show | Anterior thickenings of the capsule to strengthen the capsule ANTERIORLY
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| * * What muuscle tendon provides support to the shoulder superiorly, posteriorly, anteriorly, and inferiorly? | show 🗑
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| What structure prevents superior displacement of the head of the humerus? | show 🗑
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| * * What muscles are responsible for flexion of the shoulder joint? | show 🗑
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| show | Posterior deltoid, latissiumus dorsi, teres major
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| show | supraspinatus and middle deltoid
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| show | pectoralis major, latissimus dorsi, teres major AND teres minor
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| show | infraspinatus, teres minor, posterior deltoid
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| show | Subscapularis, latissimus dorsi, teres major, anterior dltoid, pectoralis major
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| show | Combination of flexion, extension, abduction, adduction, lateral rotatio, and medial rotation
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| show | Sudden violence applied to humerus when joint is fully abducted-->inferior part of capsule tears and humeral head is displaced inferior to glenoid cavity; axillary nerve
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| show | Rare; caused by sudden direct violence to front of joint capsule; results in subglenoid displacement of the humeral head into quadrangular space; can hurt axillary nerve (paralysis of deltoid and loss of skin sensation over lower half of deltoid)
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| show | impingement and tendinopathy; supraspinatus, as it passes BENEATH acromion and acromioclavicular ligament
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| show | IMPINGEMENT
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| Recurrent inflammation of the subquadrangular space of the tendon causes degeneration which may result in calcium deposition and extreme paiN; this is known as... | show 🗑
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| show | Extreme pain during abduction; patients may also have inflammation in subacromial bursa, making pain worse
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| show | The trochlea (ulna) and the capitulum (head of radius); it is a synovial hinge joint
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| What bones articulate at the proximal radioulnar joint? | show 🗑
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| show | Supination and pronation
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| What attaches the margins of the radial notch, forming a collar around the head of the radius? | show 🗑
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| show | Sudden lifting of a young child by one arm when it is pronated, causing tearing of the annular ligament; radial head moves distally partially out of ANULAR ligament
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| What bones are involved in the distal radioulnar joint? What motions are allowed? | show 🗑
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| show | Triangular shaped disc composed of fibrocartilage; chief support uniting the distal radius and ulna; SEPARATES THE ULNA FROM THE WRIST JOINT
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| show | The distal radius and the articular disc: scaphoid, lunate, and triquetral; ellipsoid type of synovial joint
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| What prevents the wrist joint from abducting laterally? | show 🗑
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