Shoulder Flashcards
What are the joint surfaces for the shoulder?
Convex humeral head on concave glenoid
What is the close packed position of the Glenohumeral joint?
Abduction and external rotation
What is the capsular pattern of the shoulder?
ER most limited, abduction, IR, then flexion
What type of joint is the AC joint?
Mostly planar joint surface covered in fibrocartilage, small, weak and synovial
What direction does the acromion face?
Anterior, medial, superior
What direction does the clavicle face?
Posterior, lateral, inferior
What are the joint surfaces for the SC joint?
Saddle/sellar joint. Concave superior/inferior and convex anterior/posterior
The SC joint shares a capsule with the?
1st rib
Clavicle on sternum movement is…
Concave on convex
Total elevation of clavicle is
30-35 degrees
Total rotation of clavicle on sternum around longitudinal axis is
30-35 degrees
Brachial plexus entrapment sites:
Scalenes, 1st rib, pec minor
Suprascapular nerve entrapment sites:
Suprascapular notch, traps
Dorsal Scapular nerve entrapment site:
Scalenes, levator scapulae
Axillary nerve entrapment site:
Quadrangular space
Median nerve entrapment site:
Biceps, brachialis, pronator there’s, carpal tunnel, FDP and FDS
Radial nerve entrapment site:
Triceps, brachioradialis, supinator
Ulnar nerve entrapment site:
Long head of triceps, FCU, cubital tunnel, guyons canal
What nerve is in the triangular interval?
Radial nerve. NO NERVE IN TRIANGULAR SPACE
What nerve is in the quadrangular space?
Axillary
Ulnohumeral Joint:
Hinge joint with convex trochlea on concave ulna
Joint plane of Ulnohumeral joint
45 degrees to long axis of ulna
Radiohumeral joint:
Ball and socket. Concave radial head, convex capitulum of humerus
Radiohumeral joint has 2 degrees of freedom:
Flexion/extension and pronation/supination
Proximal Radioulnar Joint:
Synovial pivot joint. Convex radial head on concave ulna
Extension with pronation, radial head moves BLANK on capitulum, BLANK on ulna
Posterior, dorsal
Anterior glide of radius on humerus improves
Flexion and supination
Posterior glide of radius on humerus improves
Extension and pronation
1st rib anterior/inferior glides improves shoulder:
Flexion, abduction, ER
SC joint inferior glide improves shoulder
Flexion and abduction
Anterior glide of SC joint improves
Protraction
Posterior glide of SC joint improves
Retraction
Superior glide of SC joint improves shoulder:
Depression
Distal Radioulnar joint:
Concave on convex. Concave ulnar notch on radius
Pronation: radius moves
Palmar
Supination: radius moves
Dorsal
What are the combined motions of the wrist?
Extension with radial deviation, flexion with ulnar deviation
Radiocarpal joint:
Proximal biconcave and distal biconvex
What is the axis of motion for the Midcarpal joint?
Capitate. Convex on concave
In the MCP joint, the metacarpal head is
Convex
The phalanx are
Concave
In the IP joints, distal BLANK on proximal BLANK
Concave on convex
