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Cubital Fossa
| Question | Answer |
|---|---|
| What type of joint is proximal radioulnar? | Synovial pivot |
| What are the articular surfaces of the proximal radioulnar joint? | Radial head and radial notch |
| What type of joint is distal radioulnar joint? | Synovial pivot |
| What are the articular surfaces of the distal radioulnar joint? | Head of ulna, ulnar notch of radius and triangular fibrocartilagious disc |
| What is the superior border of the cubital fossa? | The imaginary line between the epicondyles of the humerus |
| What is the medial border of the cubital fossa? | Pronator teres |
| What is the lateral border of the cubital fossa? | Brachioradialis |
| What is the floor of the cubital fossa? | Brachialis and Supinator muscles |
| What is the roof of the cubital fossa? | Skin, fascia and bicipital aponeurosis |
| What are the contents of the cubital fossa? | MBTR - Median nerve, brachial artery, tendon of biceps brachii and radial nerve |
| What are the superficial muscles of the anterior forearm? | Pronator teres, flexor carpi radialis, flexor carpi ulnaris and palmaris longus |
| Where do all superficial anterior forearm muscles attach? | Medial epicondyle of humerus |
| What are the intermediate anterior forearm muscles? | Flexor digitorum superficialis, both radial and humero-ulnar heads |
| What are the deep anterior forearm muscles? | Flexor digitorum profundus, flexor pollicis longus and pronator quadratus |
| What is the attachment of the posterior forearm muscles? | Lateral humeral epicondyle |
| What are the three radial muscles of the forearm? | Bracioradialis, Extensor carpi radialis longus and Extensor carpi radialis brevis |
| Where does brachioradialis attach? | Lateral supracondylar ridge |
| Where does brachiradialis insert? | Radial styloid |
| Where does ECR longus attach? | Lateral supracondylar ridge |
| Where does ECR longus insert? | 2nd metacarpal |
| Where does ECR brevis attach? | Lateral humeral epicondyle |
| Where does ECR brevis insert? | 3rd metacarpal |
| What are the three digital muscles of the forearm? | Extensor digitorum, Extensor digiti Minimi, Extensor indicis |
| What is the attachment of extensor digitorum? | Lateral humeral epicondyle |
| What is the insertion of the extensor digitorum? | Extensor expansions of the digits |
| What is the attachment of the extensor digiti minimi? | Lateral humeral epicondyle |
| What is the insertion of extensor digiti minimi? | Extensor expansion of 5th digit |
| What is the attachment of extensor indicis? | Distal ulna and the interosseus membrane between radius and ulna |
| What is the insertion of extensor indicis? | Extensor expansion of 2nd digit |
| What are the three thumb muscles? | Extensor pollicis longus, Extensor pollicis brevis and Abductor pollicis longus |
| What is the attachment of extensor pollicis longus? | Distal ulna and IO membrane |
| What is the insertion of extensor pollicis longus? | Distal phalanx |
| What is the attachment of extensor pollicis brevis? | Distal radius and IO membrane |
| What is the insertion of extensor pollicis brevis? | Proximal phalanx |
| What is the attachment of abductor pollicis longus? | Radius, Ulna and IO membrane |
| What is the insertion of abductor pollicis longus? | 1st metacarpal |
| What are the medial boundaries of the anatomical snuffbox? | Extensor pollicis longus |
| What are the lateral borders of the anatomical snuffbox? | Extensor pollicis brevis and abductor pollicis longus |
| What is the floor of the snuffbox? | Scaphoid, trapezium, radial styloid and radial artery |
| What is the roof of the snuffbox? | Cephalic vein and radial nerve |
| What are 3 other muscles of the posterior forearm? | Extensor carpi ulnaris, Aconeus and Supinator |
| What is the attachment of extensor carpi ulnaris? | Lateral humeral epicondyle and ulna |
| What is the insertion of extensor carpi ulnaris? | 5th metacarpal |
| What is the attachment of aconeus? | Lateral humeral epicondyle |
| What is the insertion of aconeus? | Olecranon and ulna |
| What is the attachment of Supinator? | Superficial humeral head and deep ulnar head |
| What is the insertion of the supinator? | Proximal radius |
| What passes between the two heads of the supinator? | Deep radial nerve |