Anatomy- Limb Arthrology Flashcards
Sternoclavicular joint type
Synovial
Stellar shape
What is the only bone-bone joint in the upper limb and axial skeleton?
Sternoclavicular joint
Sternoclavicular joint shape
Stellar
Sternoclaviculat joint Degrees of freedom
2
Movements at sternoclavicular joint
Elevation/depression
Protraction/retraction
Articulations of sternoclavicular joint
Clavicle and manubrium
Extra features of sternoclavicular joint
Contains articulate joint which divides joint into 2 synovial cavities
Acromialclavicular joint type
Synovial
Acromiolclavicular joint shape
Plane (gliding)
Acromioclavicular joint degrees of freedom
2
Movements at acromioclavicular joint
Elevation/depression
Scapular upward/downward rotation (direction glenoid fossa faces)
Articulations of acromioclavicular joint
Clavicle and scapula (acromion)
Also includes syndesmosis between clavicle and coracoid process of scapula
Special features of acromioclavicular joint
My contain articular disk
Glenohumeral joint type
Synovial joint
Glenohumeral joint shape
Spheroidal
Glenohumeral degrees of freedom
3
Movements at glenohumeral joint
Flexion/extension
Abduction/adduction
Internal/external rotation
Three joints of “elbow”
Humeroulnar
Humeroradial
Proximal radioulnar
[all share a single synovial capsule with a single capsular ligament]
Humeroulnar joint shape
Ginglymus
Degrees of freedom of Humeroulnar joint
1
Movement at Humeroulnar joint
Flexion/extension
Humeroradial joint shape
Ginglymous
Humeroradial degrees of freedom
1
Movement at humeroradial joint
Flexion/extension
Proximal radioulnar joint shape
Trochoid
Degrees of freedom of proximal radioulnar joint
1
Movement at proximal radioulnar joint
Pronation/supination
Articulations of wrist joint
Radius
Ulna
Carpal bones
Main wrist joint
Radiocarpal joint
Articulations of radiocarpal joint
Radius
Scaphoid
Lunate
Wrist joint shape
Ellipsoid
Wrist joint types
Synovial
Degrees of freedom of wrist
2
Movements at wrist
Flexion/extension
Adduction/abduction
Where can you find an articular disk in the wrist
Joint between ulna and triquetral bones
Bones of thumb joint
Metacarpal 1
Trapezium
Thumb joint shape
Stellar
Degrees of freedom of thumb joint
2
Movements at thumb joint
Flexion/extension
Adduction/abduction
Ligaments of thumb joint
Palmar carpometacarpal ligaments
Dorsal carpometacarpal ligaments
Intermetacarpal ligament (joins metacarpals 1&2)
Articulations of metacarpophalangeal joints
Heads of metacarpals and proximal phalanges
Metacarpophalangeal joint shape
Ellipsoid
Metacarpophalangeal joint degrees of freedom
2
Movements at metacarpophalangeal joints
Flexion/extension
Adduction/abduction (except thumb)
Interphalangeal joint shape
Ginglymous
Interphalangeal joint degrees of freedom
1
Interphalangeal joint movement
Flexion/extension
Ligaments at interphalangeal joint
Articular capsule
Collateral ligaments-reinforce sides of joint
Palmar ligaments/plates- continue groove that guides flexor tendon
Extensor hood/dorsal digital expansion sheath (digits 2-5)- allows simultaneous extension of interphalangeals