Unit I Lec 13-14-15A Flashcards
An area of skin that received genral sensory information from a specific sinal cord segment
dermatome
Skull, scalp is covered by what dermatome
C2
There is no what number dermatome
C1
Dermatome where neck and shoulders meet
C6
Three dermatomes on back of neck
C3,4,5
Dermatome running across top of chest on shoulders (anterior)
C5
2 dermatomes covering anterior neck
C3,4
Dermatome covering lateral arm to thumb
C6
Dermatome covering lateral-medial arm to wrist
C5
Dermatome coving medial part of arm from shoulder to wrist
T1
Dermatome covering most medial part of arm, wring finger, small finger
C8
On dorsal hand dermatome covering thumb
C6
Index finger nad middle finger dermatome
C7
Little finger and wring finger dermatome
C8
Midpoint of breat dermatome
T4
Dermatome for xiphoid process
T6
Dermatome for naval
T10
Dermatome for pelvis to groin
L1
Dermatome from lower groin diagonal across thigh
L2
Dermatome across lower thigh
L3
Dermatome across patella and medial leg and foot with bony prominence for testing, medial big toe
L4
Dermatome supplying lateral leg and plantar surface of foot, lateral big toe
L5
Posterior, dermatome that covers lateral aspect of leg
S1
Posteriod, medial leg dermatome
S2
Dermatomes with circles around anal orifice
S3,4,5
Dermatome for genitalia
S2,3
Join composed of 3-joint complex, power joint for lifting
elbow
Elbow joint where articulation actually occurs
humeroulnar joint
round ball of humerus where ulna articulates
trochlea
concavity on ulna that articulates on trochlea
trochlear notch
Elbow joint type
hinge joint
Joint created by capitulum of humerus and head of radius, created by surrounding articular capsule
humeroradial joint
Third joint of elbow bet radius and ulna
proximal radioulnar joint
depression between medial nad lateral epicondyle of humerus
coronoid fossa
Bony feature on medial side of radius where biceps brachii attaches
radial tuberosity
Big bump of elbow
olecranon process
Muscle that inserts at ulnar tuberosity
brachialis
Term for forearm flaring out from body
carrying angle
Term for deformity where carrying angle is abolished, caused by epicondyular fx
cubitus varus (gunstock deformity)
Posterior elbow dislocation with ulnar fx is called a
sideswipe injury
Small m insertion into post ulna, orig lateral epicondyle, crosses elbow from posterior side, elbow extensor
anconeus
Main function of anconeus
pulls slack out of posterior joint capsule at elbow extension
Anconeus innervation
radial nerve
Triangular shaped ligament with anterior, middle, and posterior parts at ulna
ulnar collateral ligament
ulnar collateral ligament orignates from
medial epicondyle
anterior ulnar collateral lig attaches to
coronoid process
middle and posterior ulnar collateral ligament attach to
trochlear notch
lateral ligament, cord-like at elbow
radial collateral lig
radial collateral lig arises from
lateral epicondyle
radial collateral lig attaches to
annular ligament of radial head
Surgery where they take ligament from other part of body and replace radial collateral ligament
tommy john surgery
Brachialis, biceps brachii, brachioradialis, pronator teres act on elbow joint how
flexion
Triceps brachii and anconeus act on elbow joint how
extension
triangle shaped area on anterior side of elbow
cubital fossa
Lateral border of cubital fossa
brachioradialis
Medial boundary of cubital fossa
pronator teres
Proximal bounfdary of cubital fossa
line from lateral to medial epicondyle
Main vein running through cubital fossa
medial cubital vein
Muscle in floor of cubital fossa
supinator
roof (proximal) of cubital fossa is what mx
brachialis
roof of cubital fossa
skin and fascia
Most superficial vein on cubital fossa
median cubital vein
Vein at lateral side of cubital fossa
cephalic vein
Vein at medial side of cubital fossa
basilic vein
Alternate venous structure of cubital fossa, names of v-shaped veins in middle of cubital fossa
median basilic and cephalic veins
Deep to veins on cubital fossa, sheet of tissue from biceps brachii
bicipital aponeurosis
Lateral to aponeurosis, large tendon deep in fossa
biceps brachii tendon
Median nerve, musculocutaneous nerve, radial nerve are in what structure at elbow
cubital fossa
Terminal branch of musculocuntaneous nerve
lateral antebrachial cutaneous nerve
nerve for general sensation on lateral forearm
lateral antebrachial cutaneous nerve
Radial nerve splits into what 2 nerves in cubital fossa
superficial and deep radial nerves
Nerve for general sensation to dorsolateral aspect of hand
superficial radial nerve
Nerve that pierces supinator canal
deep radial nerve
Deep radial nerve becomes what after piercing supinator canal
posterior interosseous nerve
Nerve that supplies rest of forearm extensor mx
Posterior interosseous nerve
fracture of the wrist is through the distal end of the radius causing the fragments to displace dorsally and radially
Colle’s Fracture
frequently seen fracture through the neck of the fifth metacarpal
Boxer’s Fracture
fracture through the base of the first metacarpal
Bennett’s Fracture
soft tissue inflammation with resulting muscle imbalance which creates the deformities frequently involves the MCP and PIP
Rheumatoid Arthritis
Synovitis around the MCPs creates ligamentous instability. The ED looses its central pull and the MCP flexors pull in an ulnar direction
Ulnar Drift Deformity
Hyperextension of the PIP joint and flexion of the DIP joint. Synovitis at the MCP joint causes the intrinsic muscles to weaken and shorten. This causes an excessive pull for hyperextension at the PIP joint
Swan Neck Deformity
hyperextension of the DIP joint is seen together with flexion of the PIP joint
Boutonniere Deformity
joint destruction due to wear and tear of the bones within the joints that create the deformities
Osteoarthritis
osteophyte formations at the DIP joints
Heberden’s Nodes
Common compression site is at the wrist under the transverse carpal ligament (carpal tunnel syndrome). Results in numbness and tingling along the median distribution and weakess and atrophy of the muscles of the thenar eminence
Median Nerve
Test that reproduces symptoms by sustained wrist flexion, median nerve damage
Phalen Test
ulnar nerve damage, flexion deformity of the ring and little finger called
ulnar claw hand
ulnar nerve damage, Inability to grasp piece of paper between the thumb and radial side of the palm
Froment’s Sign
Common compression sites of median and ulnar nerve are the
cubital tunnel, tunnel of Guyon
Nerve Most commonly injured with mid-humeral fractures of the humerus
Radial Nerve
Compression of the radial nerve is most common in the axilla and is called
Saturday Night Palsy
Radial nerve damage causes weakness in mx significantly effects the grip due to wrist stability
wrist drop
Tendon damage finger locks in a flexed position and can be extended only with difficulty associated with a popping sound
Trigger Finger
commonly seen painful tenosynovitis affecting abductor pollicis longus and extensor pollicis brevis
DeQuervain’s Disease
Test for DeQuervain’s Disease
Finklestein’s Test
chronic hyperplasia of the palmar fascia and tendon binding contractures in the hand
Dupuytren’s Contractures
Compartment on dorsal surface of forearm with 6 superficial mx, 5 deep mx, nerves, and vessels
extensor compartment
Deep radial nerve innervates what mx
supinator
Posterior interosseous nerve is a continuation of
deep radial nerve
Tendon that anchor 4 mx in extensor compartment
common extensor tendon
Attachment point for common extensor tendon
lateral epicondyle
Bony feature where 2 other mx in extensor compartment originate
lateral suprecondylar ridge
Term for tennis elbow, inflammation of common extensor tendon
lateral epicondylitis
Mx that supinate forearm
supinator, brachioradialis
Mx that is triangle shaped, orig lateral supracondylar ridge
supinator
Mx supination and flexion, orig lateral supracondylar ridge
brachioradialis
Extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris all do what
extend wrist
Extensor carpi radialis longus orig
lateral supracondylar ridge
extensor carpi radialis brevis, extensor carpi ulnaris orig
lateral epicondyle common extensor tendon
Extensor digitorum, extensor digiti minimi, extensor indicis all do what
extend digits
Mx extensor that gives off 4 tendons to phalanges 2-5
extensor digitorum
Mx extensor that goes to little finger
extensor digiti minimi
Mx extensor orig distal ulna goes to index finger
extensor indices
Abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus do what
extend/radially abduct thumb
3 Mx extensor orig from ulna, long tendon to thumb
Abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus
Mx extensor with base at 1st metacarpal of thumb
abductor pollicis brevis
Mx extensor with insertion at proximal phalanx of thumb
extensor pollicis brevis
Mx extensor with insertion at distal phalanx of thumb
extensor pollicis longus
Categorical term for extensors that originate from distal humerus and insert on distal portion of digits
hand extrinsic mx
Groove on dorsal radius for long tendon of extensor pollicis longus, test question
Dorsal radial tubercle of Lister
Insertion point for brachioradialis
Radial styloid process
depression on posterior hand at base of thumb
Anatomical snuffbox
Abductor pollicis longus, extensor pollicis brevis, and extensor pollicis longus
Tendons bounding anatomical snuffbox
Tendon at medial side of anatomical snuffbox
extensor pollicis longus
Tendon at proximal lateral side of anatomical snuffbox
abductor pollicis longus
Tendon at distal lateral side of anatomical snuffbox
extensor pollicis brevis
Floor of snuffbox is what bone
scaphoid bone
Radial artery, cephalic vein, superficial radial nerve go through what anatimcal feature near thumb
Anatomical snuffbox
Deep radial nerve innervates what extensors
brachioradialis, extensor carpi radialis longus
Posterior interosseous nerve innervates what extensors
everything but brachioradialis, extensor carpi radialis longus
