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