Joints and Ligaments of the Hand and Wrist Flashcards
What are the 2 types of Carp Joints?
a) intercarpal joints
b) mid-carpal joints
where are intecarpal joint found?
between carpals
what type of joint are intercarpal joint
synovial, plane joints
where are mid-carpal joints found?
between proximal and distal row of carpals
what type of joint are mid-carpal joints?
synovial, hinge
where are the carpometacarpal joints found?
between distal carpals and bases of metacarpals
what are the articulations of the carpometacarpal joint of the thumb?
trapezium articulates with base of metacarpal 1
what is different about the carpometacarpal joint of digit 1
digits 2-5 are synovial plane joints so they have linear translation/sliding/gliding, but digit 1 is a saddle joint so it has flexion/extension, abduction/adduction and opposition
what are the 5 movements of the thumb?
1) flexion - across palm
2) extension - return to anatomical position
3) abduction - anterior to palm
4) adduction - return to anatomical position
5) opposition - thumb touches finger tips
what are the articulations at the metacarpophalangeal joints?
head of metacarpal articulates with base of proximal phalanx
what type of joint are metacarpophalangeal joints?
synovial, condyloid, bi-axial
what 3 ligaments are found at the metacarpophalangeal joints?
1) collateral ligaments
2) palmar ligaments
3) deep transverse ligament of the palm
what are collateral ligaments. what do they restrict?
capsular ligaments at sides of joint. restrict side to side movement
what are palmar ligaments (plates)
thickening of joint capsule anteriorly
what is the deep transverse ligament of the palm?
connects palmar plates of digits 2-5
what are the 2 types of interphalangeal joints?
distal and proximal
what type of joint are interphalangeal joints?
synovial, hinge, uni-axial
what are the articulations of the proximal interphalangeal joints?
head of proximal phalanx articulates with the base of the intermediate phalanx
what are the articulations of the distal interphalangeal joints?
head of intermediate phalanx articulates with base of distal phalanx
what are the 2 ligaments found at the interphalangeal joints?
collateral ligaments and plantar ligaments (plates)
what are the articulations of the radoiocarpal joint?
distal radius articulates with the proximal row of carpals and articular disc
what type of joint is the radoiocarpal joint?
synoval, condyloid bi-axial
what movements occur at the radoiocarpal joint?
flexion/extension, abduction (radial deviation)/adduction (ulnar deviation)
what are the 4 ligaments at the radoiocarpal joint?
1) Radial/Lateral Collateral Ligament (of the Radoiocarpal Joint)
2) Ulnar/Medial Collateral Ligament (of the Radiocarpal Joint)
3) Palmar Radiocarpal Ligament
4) Dorsal Radiocarpal Ligament
what are the articulations of the radial/lateral collateral ligament of the radoiocarpal joint?
radial styloid process to the lateral carpals (scaphoid and trapezium)
what does the radial/lateral collateral ligament of the radoiocarpal joint restrict?
adduction (ulnar deviation)
what are the articulations of the Ulnar/Medial Collateral Ligament (of the Radiocarpal Joint)?
Ulnar styloid process to the medial carpals (triquetrum and pisiform)
what does the Ulnar/Medial Collateral Ligament (of the Radiocarpal Joint) restrict?
restricts abduction (radial deviation)
what are the articulations of the palmar radoiocarpal ligament?
Distal radius to proximal carpals (anteriorly)
what does the palmar radiocarpal ligament restrict?
hyperextension
what are thea articulations of the dorsal radiocarpal ligament?
distal radius to proximal carpals (posteriorly)
what does the dorsal radiocarpal ligament restrict?
flexion
