Overview Flashcards


how does the radius move in relation to the ulna in pronation
radius moves over the ulna
what type of joints if the 1st CMC joint
synovial - saddle type








subclavis muscle

levator scapulae
what is the innervation of the rhomboid muscles
dorsal scapula nerve



what do the rotator cuff muscles do
hold the head of the humerus in the glenoid fossa


where do the 4 rotator cuff muscles attach
supraspinatus and infraspinatus and teres minor to greater tuberosity
subscapularis to lesser tuberosity


subscapularis is on the anterior side of the scapula

name the muscles in the ant compartment of the arm
biceps brachii
brachialis
coracobrachialis


action of the muscles in ant compartment of the arm
flexion of arm and forearm
innervation of the anterior muscles of the arm
musculocutaneous nerve

muscles in the posterior compartment of the arm
triceps brachii
action of muscles in pos compartmnet of arm
extension of arm and forearm
innervation of muscles in the pos compartment of arm
radial nerve


triceps brachii
anterior compartment of forearm - superficial layer


anterior compartment of forearm - intermediate layer


anterior compartment of forearm - deep layer


what are the muscles of the anterior compartment of the forearm innervated by
MEDIAN nerve
except flexor carpi ulnaris and medial half of flexor digitorum profundus - ulnar nerve

deep layer of pos compartmnet of forearm


superficial layer of muscles of pos compartment of forearm


whatare the muscles of the posterior compartment of the forearm innervated by
radial nerve


what muscles are in the thenar eminence
abductor pollicis brevis
flexor pollicis brevis
opponens pollicis

what is the thenar eminence innervated by
recurrent branch of median nerve

what muscles are in the hypothenar eminence
abductor digiti minimi
flexor digiti minimi brevis
opponens digiti minimi

what is the hypothenar eminence innervated by
deep branch of ulnar nerve

what eminence in the hand is affected by carpal tunnel syndrome
thenar eminence
lumbricals
attach to tendons of flexor digitorum profundus

what are the lumbricals innervated by
lateral 2 - median nerve
medial 2 - ulnar nerve
interossei
dorsal - abduction of digits
plantar - adduction of digits

what are the interossei innervated by
ulnar nerve
brachial plexus course
nerve roots
passes through axilla to medial arm
C5-T1 anterior rami

what forms the sup med and inf trunks of teh brachial plexus
sup - C5 and 6
middle - C7
inf - C8 and T1

what forms the lat, pos and medial cords of the brachil plexus
lateral -anterior divison of sup and middle trunk
posterior - posterior division of sup, middle and inf trunk
medial - anterior divison of inferior trunk

draw out brachial plexus diagram



describe the innervation of the hand

what is the flexor retinaculum
transverse carpal ligament

what is the carpal tunnel formed by
flexor retinaculum and carpals

what is the contents of the carpal tunnel

carpal tunnel syndrome
compression of the medial nerve can lead to weakness in the thenar muscles
numbness in digits 1-3 and lateral half of digit 4 is experienced




describe a saddle joint and give 2 examples
biaxial
movement in 2 planes - reasonable in 1 and less well in another
carpometacarpal thumb joint and sternoclavicular joint

describe a pivot joint and give 2 examples
rotary movement around a single axis
eg atlanto-axial and radioulnar
describe a plane joint and give 2 examples
minimal movement in one plane
eg acromioclavicular and intercarpal

describe a condyloid joint and give an example
permits movement in 2 planes: flexion, extension ab and ad duction, circumduction
eg metacarpophalangeal joints

what type of joint is the acromioclaviuclar joint
plane
what type of joint is the sternoclavicular joint
saddle
what type of joitnts are the proximal and distal radioulnar joints
pivot
what type of joint is the radiocarpal joint
ellipsoid
what type of joints is the elbow joint
radiohumeral and humeroulnar
hinge
what are the muscles of the ant compartment of the forearm inervated by
median nerve
except flexor carpi ulnaris and medial half of flexor digitorum profundus (ulnar nerve)
what acts as static stabilisation of the shoulder
shoulder capsule and labrum

describe the 5 compartments of the hand

where is the volar surface of the hand
anterior wrist
where is the midpalmar space
posterior to the central compartment

where is the thenar space
posterior to the thenar compartment

how can deep infections spread from palm to anterior forearm
via the midpalmar space and carpal tunnel
where does the median nerve enter the anterior arm
via the cubital fossa

what does the median nerve do in the carpal tunnel
divides into recurrent branch and palmar digital branch
recurrent branch of median nerve
innervates the thenar eminence
palmar digital branch of median nerve
Innervates the lateral palmar surface and fingertips of the lateral three and half digits
Also innervates the lateral two lumbrical muscles.

atlanto-axial and atlanto-occipital joint movements
Atlanto-occipital joint does nodding action, and atlanto-axial joint allows head rotation (pivot joint)
- muscle
- nerve innervation
- test

- adductor pollicus
- ulnar nerve
- froment’s test
what type of joint is the sternoclavicular joint
saddle
