joints of upper limb Flashcards
Sternoclavicular Joint
attaches the upper limb to the trunk
what broadly
one of the joints of the pectoral girdle
what type of joint
synovial saddle joint
what is the joint cavity divided by
fibrous articular disc
function/movements
elevation of lateral clavicle
anterior and posterior movements
how is it stabilised
joint stabilised with a number of ligaments
Acromioclavicular Joint (ACJ)
lateral end of the clavicle and the acromion process of the scapula
what are the teo joints of the clavicle
ACJ
SCJ
type
plane synovial joint
movement
Rotation and some
vertical and anterior/posterior (A/P) movements
stabilised by
ligaments and muscles limit movements and stabilise the joint
Scapulothoracic Joint
Not a true joint
movement
Movements of the scapula against the posterior and lateral thoracic wall are the scapulothoracic joint movements.
Shoulder Joint (glenohumeral joint)
ball-and-socket synovial joint.
between
rounded humeral head articulates with glenoid fossa of the scapula
movement
highly mobile joint with wide range of movement
stabilised by
muscles required for joint stability. (eg. Rotator cuff group)
more mobile
less stable
Elbow Joint has how many articulations
2
what are they
distal end of the humerus and the proximal end of the radius and ulna of the forearm
mobility
flexion and extension
3rd joint in elbow (ikhtilaafi joint)
proximal heads of the radius and ulna
proximal radio ulnar joint
what ahppens at this joint
the shaft crosses the ulna
so teh palm faces posterior to anterior
when the arm or forearm faces up
supination
when down
pronation
In full flexion at the elbow,
the radial fossa accommodates the head of the radius, and the coronoid fossa accommodates the coronoid process of the ulna.
the olecranon fossa
accomadates the olecraNON OF THE ULNA
when forearm is fully extended
further extended limites
Wrist Joint
consists of
distal end of the radius and 3 of the proximal carpal bones
is the ulna part of the wrist joint
no
what does it articulate with
the articular disc which articulates with carpals
ewhy is there are large gap between the ulna and the carpal bones in an x ray
the space is occupied by the articular disc
Distal Radio-Ulnar Joint
The distal ends of the radius and ulna form the distal radio-ulnar joint.
what are they connected by
fibrous articular disk
what are the Intercarpal joints
between the proximal and distal carpal bones
Carpometacarpal joints
proximal end of the caroal and the base of the metacarpal
what are all these joints
sinovial joints
exception
1st carpometacarpal joint
which is a
saddle joint
allowing
greater mobility of teh thimb
metacarpophalangeal joints
knuckles
what type
synovial condola joints
what joints are there between the phalanges
interphalngeal joint
function
flexion and extension only
what ligament connects the phalangeas at the medial and lateral sides
collateral ligaments