Upper Limb - Hand and Wrist
How many phalanges are there total in one hand?
14 phalanges
The trapezium articulates with which metacarpal?
1st metacarpal
How many phalanges are in the thumb?
2 phalanges, proximal and distal
How many bones total are there in one hand/wrist area?
27 bones
The trapezoid articulates with which metacarpal?
2nd metacarpal
How many phalanges are there in digits 2-5?
3 phalanges, proximal, middle, and distal
The capitate articulates with which metacarpal?
3rd metacarpal
How many middle phalanges total in one hand?
4 middle phalanges
The hamate articulates with which metacarpals?
4th and 5th metacarpals
How many distal phalanges total in one hand?
5 distal phalanges
How many metacarpals in one hand?
5 metacarpals
How many proximal phalanges total in one hand?
5 proximal phalanges
How many carpals in one wrist?
8 carpals
Proximal end of metacarpal articulates with the carpal bone
Carpometacarpal (CMC) joint
Middle and distal phalanx articulate
Distal Interphalangeal (DIP) joint
Proximal and distal phalanx of the thumb articulate
Interphalangeal (IP) joint
Proximal phalanx articulates with distal end of metacarpal
Metacarpophalangeal (MCP) joint
What projections visualize the scaphoid fat stripe?
PA and oblique
Proximal and middle phalanx articulate
Proximal Interphalangeal (PIP) joint
Why do plane (gliding) joint have limited movement?
a tight fibrous capsule around the joint
The triquetrum articulates with
anterior portion of the pisiform
A carpal sulcus view is used for
carpal tunnel
What is a freely moveable joint called?
diarthrodial
The joint between the distal radius and ulna is the
distal radioulnar joint
What type of joint are metacarpophalngeal (MCP) joints?
ellipsodial (condyloid)
What type of movement does ginglymus (hinge) joints allow?
flexion and extension
What type of movement does ellipsodial (condyloid) joints allow? (hint: there are 5)
flexion, extension, abduction, adduction, and circumduction
What type of movement does a saddle (sellar) joint allow? (hint: there are seven)
flexion, extension, abduction, adduction, circumduction, opposition, and rotation
What type of joint is an interphalangeal (IP) joint?
ginglymus (hinge)
What are the parts of each phalanx?
head, body, base
What is the hamulus
hooklike process that projects from the palmar surface
What projections visualize the pronator fat stripe?
lateral
What shape is the lunate carpal bone?
moon shaped
The triquetral bone is
opposite of the articular disk
What type of joint allows the least amount of movement?
plane (gliding)
What type of joint is an intercarpal joint?
plane (gliding)
What type of joints are the 2nd-5th carpometacarpal (CMC) joints?
plane (gliding)
Located about 1/4 inch from the anterior surface of the radius
pronator fat stripe
Which ligament of the wrist extends from the styloid process of the radius to the lateral side of the scaphoid and trapezium?
radial collateral ligament
Wrist is turned towards the radius (lateral)
radial deviation
What joint is at the articulation of the radius, scaphoid, and lunate?
radiocarpal joint
The lunate articulates with
radius
The scaphoid articulates with
radius
What type of joint is the carpometacarpal (CMC) joint of the thumb?
saddle (sellar)
What two carpal bones articulate with the radius?
scaphoid and lunate
Located between the radial collateral ligament and adjoining muscle tendons immediately to the lateral scaphoid
scaphoid fat stripe
What is the characteristic of the pisiform?
smallest carpal bone
All joints of the upper limbs are
synovial and diarthodial (freely moveable)
The hamate is distinguished by
the hamulus
The articular disk is part of
the total wrist articulation
Which ligament of the wrist attaches the styloid process of the ulna to the triquetrum and pisiform?
ulnar collateral ligament
Wrist is turned towards the ulna (medial)
ulnar deviation
