Wrist Joint & Movements
Wrist Joint ligamnts include:
-Ulnar collateral -Radial collateral -Palmar radiocarpal -Dorsal radiocarpal
Proximal row (lateral to medial) of carpal bones:
-scaphoid -lunate -triangular -pisiform
8 carpal bones are:
-scaphoid -lunate -triangular -pisiform -trapezium -trapezoid -capitate -hamate
Distal row (lateral to medial) of carpal bones:
-trapezium -trapezoid -capitate [very big] -hamate [hook on little finger side]
Thumb movements in the sagittal plane:
Abduction [putting thumb up] Adduction [putting thumb down]
Wrist Joint movements in sagittal plane:
Flexion Extension Hyperextension [not an injury]
Bones of the wrist include:
Radius scaphoid lunate (ulna as well, but there's a gap between the wrist)
Carpal bones acronym to remember:
Some = Scaphoid Lovers = Lunate Try = Triangular Positions = Pisiform That = Trapezium They = Trapezoid Can't = Capitate Handle = Hamate
For wrist joint movements, the reference angle will be on the anterior side. (T/F)
True
Interphalangeal joints of the hand are Proximal and Distal. (PIP & DIP) T/F
True
Wrist joint movements in Frontal plane:
Ulnar flexion = Ulnar deviation = adduction [TOWARD ulna] Radial Flexion = Radial deviation = abduction [TOWARD radius] *Ulnar deviation is done more than radial
In the frontal plane digits 2-5 can perform what movements?
abduction adduction
Movements of the thumb in the frontal plane as a DIP joint include:
flexion extension
Movements the thumb can perform in the frontal plane include:
flexion extension
In the sagittal plane digits 2-5 can perform what movements?
flexion extension hyperextension
Movements of #2-5 digits in the sagittal plane include:
flexion extension hyperextension
Thumb movements in the frontal plane:
flexion [putting thumb across palm] extension [putting thumb away from palm]
Intercarpal joints do what for the wrist?
increase ROM
Carpal Tunnel syndrome is due tot he inflammation of the tendons placing pressure on the ______ nerve.
median
Are there any movements for the digits 2-5?
no named movement
Dorsal radiocarpal ligament functions to do what?
prevent excessive FLEXION
Palmar radiocarpal ligament functions to do what?
prevent excessive HYPEREXTENSION
Ulnar collateral ligaments functions to do what?
prevent excessive RADIAL DEVIATION
Radial collateral ligament functions to do what?
prevent excessive ULNAR DEVIATION
The base of the carpal arch is formed laterally by which bones?
scaphoid & trapezium
Flexor retinaculum goes to hold together the ______ to _______ bones. And the ________ to _______.
scaphoid to pisiform trapezium to hamate
For digits 2-5, the MP joints are what type?
synovial - condyloid
What type of joint is the wrist?
synovial - condyloid
Intercarpal joints of the hand are what type of joints?
synovial - gliding
Carpometacarpal joints of the hand are what type of joints?
synovial - gliding (for digits 2-5)
The thumb of MP joint is what type of joint?
synovial - modified condyloid
DIP #1-5 are what type of joints?
synovial - modified condyloid *with strong collateral ligaments
Carpometacarpal joint for the thumb is what type of joint?
synovial - saddle
The base of the carpal arch is formed medially by which bone?
the pisiform
Metacarpophalangeal joints (MCP) are the heads of your knuckles. (T/F)
true
The carpal arch concaves anteriorly, and is held in place by flexor retinaculum. (T/F)
true
The thumb is the the 1st carpometacarpal joint. (T/F)
true
