Cubital Fossa and Anterior Forearm Flashcards
Abductor pollicis longus attachments
Proximal posterior radius, ulna & interosseous membrane to the base of the 1st metacarpal & trapezium
Brachioradialis attachments
Lateral supracondylar ridge of the humerus to the distal radius lateral to the styloid process
Extensor carpi radialis brevis attachments
Lateral epicondyle of the humerus (common extensor origin) to the base of the 3rd metacarpal
Extensor carpi radialis longus attachments
Lateral supracondylar ridge of the humerus to the base of the 2nd metacarpal
Extensor carpi ulnaris attachments
Lateral epicondyle of the humerus (common extensor origin) to the base of the 5th metacarpal
Extensor digitorum attachments
Lateral epicondyle of the humerus (common extensor origin) to the extensor expansions of digits 2-5
Extensor digiti minimi attachments
Lateral epicondyle of the humerus (common extensor origin) to the digital expansion of the 5th digit
Extensor indicis attachments
Posterior surface of the ulna & interosseous membrane to the digital expansion of the 2nd digit
Extensor pollicis brevis attachments
Posterior radial surface & interosseous membrane to the base of the 1st proximal phalanx
Extensor pollicis longus attachments
Middle 1/3rd of the posterior surface of the ulna & interosseous membrane to the base of the 1st distal phalanx
Flexor carpi radialis attachments
Medial epicondyle (common flexor origin) to the palmar aspect of the base of the 2nd metacarpal
Flexor carpi ulnaris attachments
Medial epicondyle (common flexor origin) of the humerus & proximal ulnar shaft to the pisiform
Flexor digitorum profundus attachments
Anterior proximal two thirds of the ulna & interosseous membrane to the base of the distal phalanges of digits 2-5
Flexor digitorum superficialis attachments
Medial epicondyle (common flexor origin) of the humerus to the sides of the middle phalanges of digits 2-5
Flexor pollicis longus attachments
Anterior surface of the radius & interosseous membrane to the base of the distal phalanx of the thumb
Palmaris longus attachments
Medial epicondyle of the humerus (common flexor origin) to the palmar aponeurosis
Pronator quadratus attachments
Anterior surface of the distal ulna to the anterior surface of the distal radius
Pronator teres attachments
Medial epicondyle & ulnar coronoid process to lateral aspect of the radius
Supinator attachments
Lateral epicondyle of the humerus, radial collateral ligament & supinator crest of the ulna to the lateral surface of the proximal radius
Abductor pollicis longus actions
Abducts & extends thumb at carpometacarpal joint & abducts hand at wrist (radial deviation)
Brachioradialis actions
Flexes the elbow
Extensor carpi radialis brevis actions
Extends & abducts hand at wrist (radial deviation)
Extensor carpi radialis longus actions
Extends & abducts hand at wrist (radial deviation) & assists in flexion of the elbow
Extensor carpi ulnaris actions
Extends & adducts hand at wrist (ulnar deviation)
Extensor digitorum actions
Extends phalanges (primarily at metacarpophalangeal, secondarily at interphalangeal) & hand at wrist
Extensor digiti minimi actions
Extends 5th digit (metacarpophalangeal & interphalangeal)
Extensor indicis actions
Extends 2nd digit (metacarpophalangeal & interphalangeal)
Extensor pollicis brevis actions
Extends thumb (metacarpophalangeal) & extends & abducts CMC joint
Extensor pollicis longus actions
Extends thumb (CMC & metacarpophalangeal & interphalangeal)
Flexor carpi radialis actions
Flexes & abducts hand at wrist (radial deviation) & may assist in pronation of forearm & flexion of the elbow
Flexor carpi ulnaris actions
Flexes & adducts hand at wrist (ulnar deviation) & assists in flexion of the elbow
Flexor digitorum profundus actions
Flexion of digits 2-5 (metacarpophalangeal & distal interphalangeal & proximal interphalangeal), & flexion of hand at wrist
Flexor digitorum superficialis actions
Flexion of digits (metacarpophalangeal & proximal interphalangeal), & hand at wrist
Flexor pollicis longus actions
Flexes thumb (metacarpophalangeal & interphalangeal)
Palmaris longus actions
Flexes hand at wrist & tenses palmar fascia
Pronator quadratus actions
Pronates the forearm
Pronator teres actions
Pronates and flexes forearm
Supinator actions
Supinates forearm
Abductor pollicis longus innervations; spinal segments
Radial nerve; C6-8
Brachioradialis innervations; spinal segments
Radial nerve; C5-6
Extensor carpi radialis brevis innervations; spinal segments
Radial nerve; C6-8
Extensor carpi radialis longus innervations; spinal segments
Radial nerve; C6-8
Extensor carpi ulnaris innervations; spinal segments
Radial nerve; C6-8
Extensor digitorum innervations; spinal segments
Radial nerve; C6-8
Extensor digiti minimi innervations; spinal segments
Radial nerve; C7-8
Extensor indicis innervations; spinal segments
Radial nerve; C7-8
Extensor pollicis brevis innervations; spinal segments
Radial nerve; C6-8
Extensor pollicis longus innervations; spinal segments
Radial nerve; C6-8
Flexor carpi radialis innervations; spinal segments
Median nerve; C6-8
Flexor carpi ulnaris innervations; spinal segments
Ulnar nerve; C7-T1
Flexor digitorum profundus innervations; spinal segments
Median (anterior interosseous nerve; 2nd & 3rd digits) & ulnar (4th & 5th digits) nerves; C7-T1
Flexor digitorum superficialis innervations; spinal segments
Median nerve; C7-T1
Flexor pollicis longus innervations; spinal segments
Median nerve (anterior interosseous nerve); C7-T1
Palmaris longus innervations; spinal segments
Median nerve; C7-8
Pronator quadratus innervations; spinal segments
Median nerve (anterior interosseous nerve); C8-T1
Pronator teres innervations; spinal segments
Median nerve; C6-7
Supinator innervations; spinal segments
Radial nerve; C5-6
Identify the joints of the elbow and provide their synovial classification on the Structure Information List
Humeroulnar
synovial classification - ginglymus or hinge
Humeroradial
synovial classification - plane or gliding
Proximal radio-ulnar
synovial classification - pivot or trochoid
Identify the functions and attachments of the ligaments of the elbow and forearm on the Structure Information List
Ulnar collateral function: resists excessive cubital valgus
Ulnar collateral attachments: from medial epicondyle to medial margin of coronoid process & olecranon process
Radial collateral function: resists excessive cubital varus
Radial collateral attachments: from lateral epicondyle to annular ligament
Anular function: stabilizes proximal radioulnar joint
Anular attachments: from the anterior margin of the radial notch to posterior margin of radial notch surrounding head of radius
Interosseous membrane
attachments: from interosseous border of radius to interosseous border of ulna
Use a drawing to summarize collateral circulation at the elbow
Draw
Describe the location and function of the bursae at the elbow
j
Describe the following injuries and relate anatomical structures to each: radial head subluxation, olecranon bursitis
j
Describe the fascial compartments of the anterior forearm and list their contents, general actions, innervation, and blood supply
j
Locate the areas of skin associated with a single spinal segment/nerve (dermatome)
Draw
Identify structures from the Cross Section ID List on the Pronator Quadratus Muscle Level photograph on Kenhub.com
Draw