Upper limb\ Flashcards
What type of blood supply does the Scaphoid have?
Retrograde
what does the supraspinatus do?
first 15 degrees of abduction
Infraspinatus
external rotation
Subscapularis
Internal rotation and adduction
Teres Minor
external rotation
Anterior muscles of arm
Biceps Brachii, Brachialis, Coracobrachialis
Posterior muscles of arm
Triceps Brachii
Innervation of Biceps brachii
Musculocutaneous nerve
Innervation of Triceps brachii
Radial nerve
Innervation of Brachialis
Musculocutaneous nerve
Innervation of coracobrachialis
Musculocutaneous nerve
Anterior compartment of forearm muscles
Flexors, originate from medial epicondyle
Posterior compartment of forearm muscles
Extensors, originate from lateral epicondyle
Innervation of Anterior compartment
Median nerve
Innervation of Posterior compartment
Radial nerve
Innervation of flexor carpi ulnaris
Ulnar nerve
Innervation of flexor digitorum profundus
Ulnar and median nerves
Golfers’ elbow
Medial epicondylitis - overuse, pain on flexion
Tennis elbow
Lateral epicondylitis - overuse, pain on extension
Intratendinous bursa
Within the triceps brachii tendon
Subtendinous bursa
between the olecranon and triceps brachii tendon
Subcutaneous bursa
between the olecranon and overlying connective tissue
Ligaments of the elbow?
Radial collateral
Ulnar collateral
Annular
Location of radial collateral ligament
lateral epicondyle to annular ligament
Location of ulnar collateral ligament
medial epicondyle to olecranon and coronoid process
Annular ligament?
Encircles the radial head and stabilises it on supination and pronation
What is Nursemaid’s elbow?
Subluxation of annular ligament, so the radial head begins to slip out of it. Causes tenderness on palpation and pain on supination. Common in children from swinging with arms.
Brachial plexus
Nervous supply to upper limb
Musculocutaneous nerve root?
C5, C6 and C7
Axillary nerve root?
C5 and C6
Median nerve root?
C6, C7, C8 and T1
Radial nerve root?
C5, C6, C7, C8 and T1
Ulnar nerve root?
C8 and T1
Order of brachial plexus
Roots, trunks, divisions, cords, branches
Trunks?
Superior, middle and inferior
Divisions?
Anterior and posterior of superior, middle and inferior trunks to form 6 bundles