Flashcards in Forearm and Wrist Deck (58):
Where does the axillary artery become the brachial artery?
Inferior border of teres major
Brachial artery produes a branch that is the deep artery of the arm?
Brachial profunda artery
The brachial artery divides again where?
Elbow region distal to the cubital fossa
At the elbow, the brachial artery divides into?
Ulnar and Radial artery
The ulnar artery divides further into?
Anterior and posterior interosseous arteries
Ulnar Artery goes on to supply what structure in the palm?
Superficial palmar arch
The superficial palmar arch produces what arteries?
Common palmar digital arteries
The common palmar digital arteries split into two what?
Proper palmar digital arteries - supply digits
Which artery supplies the DEEP palmar arch?
Name the 3 branches to the deep palmar arch?
Palmar metacarpal arteries
Princeps pollicis artery
Describe the Allen test for collateral circulation.
Occlude both radial and ulnar arteries at wrist and then test each side independently and observe rate of refill
Name the (3) branches of median n.
Anterior interosseous n.
Palmar cutaneous n.
Recurrent median n.
Name the (2) branches of the radial n.
Deep radial n.
Posterior interossesus n.
Name the muscles receiving innervation from the AIN?
Radial portion of FDP
Flexor Pollicis Longus
What innervates the skin of the central palm?
Palmar cutaneous branch of the Median Nerve
Innervation of the thenar muscles?
Recurrent branch of the median n.
Where does the radial nerve divide?
Name the (2) divisions of the radial n.?
Deep radial N.
Superficial sensory N.
Name the muscles supplied by the deep radial N.?
Extensor carpi radialis brevis
The posterior interosseous nerve is actually a continuation of which branch of the radial nerve?
The deep branch of the radial n.
Which spinal cord segments does Biceps Reflex Testing assess?
Name the proximal row of carpal bones? (Lat->Med)
Scaphoid, Lunate, Triquetrum, Pisiform
Name the distal row of carpal bones? (Med-> Lat)
Hamate, Capitate, Trapezoid and Trapezium
The pisiform carpal bone is only visible from which position of the hand?
The Palmar (anterior view)
Colles' Fracture is what type of radius fracture?
DORSAL displacement of distal fragment
What is the mechanism of injury for a Colles' fracture?
Smith fractures are what exactly?
PALMAR displacement of distal radius fragment
MOI of a Smith fracture?
Fall on dorsum of hand with wrist flexion
Name the articulations of the wrist joint (3)?
Radiocarpal, Midcarpal and Distal Radioulnar Joint
Which bones are involved in radiocarpal joint?
Radius and Scaphoid/Lunate
What type of joint is the radiocarpal joint?
Condyloid - biaxial
F/E and ADd/ABduction
Which bones are involved in the midcarpal joint?
Both proximal and distal row carpals
What type joint is the midcarpal joint?
Plane - synovial joint
Classify the distal radioulnar joint?
Pivot type -synovial joint
Describe the functions of the retinaculums.
Prevent bowstringing of tendons
Location of the flexor retinaculum?
On the anterior side above the carpal arch
Locate the radial collateral ligament.
On the volar surface;
protects against excessive ulnar deviation
Locate the ulnar collateral ligament.
On the dorsal surface;
protects against excessive radial deviation
Name the structures contributing to the carpal tunnel.
Flexor retinaculum - forms the roof
Carpal arch forms the floor
Contents of the carpal tunnel include...?
Tendons of FDP
Tendons of FDS
Tendon of FPL
F/E and ABduction/ADduction occur at which joints?
Radiocarpal and Midcarpal joints
Name 3 extensors of the wrist?
Extensor Carpi Ulnaris
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Name 2 flexors of the wrist?
Flexor carpi ulnaris
Flexor carpi radialis
What is the common proximal attachment for extensors of the wrist?
Lateral epicondyle of the humerus
Name the distal attachment for ECRL?
Base of 2nd Metacarpal
Name the distal attachment for ECRB?
Base of 3rd Metacarpal
Name the distal attachment for ECU?
Base of 5th Metacarpal
Innervation of ECU?
Posterior Interosseous Nerve
Innervation of ECRB?
Deep radial N.
Innervation of ECRL?
Repeated forceful flexion/extension strains attachment of common extensor tendon
Flexors of the wrist share which common proximal attachment?
Medial epicondyle of humerus
Distal attachment of FCR?
Base of 2nd Metacarpal
Distal attachment of FCU?
Base of 5th Metacarpal and Pisiform
Distal attachment of Palmaris Longus?
Innervation of FCR and Palmaris Longus?
Innervation of FCU?