Hand and Wrist Flashcards
(46 cards)
Movements of the wrist occur at which 2 joints
Radiocarpal and Midcarpal
The Radiocarpal Joint articulates with the convexity formed by the 3 proximal carpal bones:
Scaphoid, Lunate, Triquetrum
Lunate and Triquetrum articulate with the
Cartilaginous Disc
Disc goes
from ulnar side of radius to ulna at the base of the ulnar styloid process
Purpose of Disc
Adds Stability and Acts as a Cushion for Wrist Joint
FOOSH means
Falling on outstretched hand
FOOSH injuries cause fractures of
Scaphoid or Lunate
Injury to Ulnar Disc
Which joints have Palmar Ligaments?
All of them (Radiocarpal, Midcarpal, Intermetacarpal, Carpometacarpal, MCPS, PIPs, DIPs)
Which joints have Dorsal Ligaments?
Radiocarpal, Midcarpal, Intermetacarpal, Carpometacarpal
Which joints have Collateral Ligaments?
Radiocarpal, MCPS, PIPs, DIPs
Which joints have Interosseous Ligaments?
“Metacarpals”- Intermetacarpal, Carpometacarpal, Metacarpalphalangeal or Deep Transverse
Verse for the Hand, Meaning, and Locate them
She Look Too Pretty, Try To Catch Her
What does Rue the day Mr. F mean?
RUE: Radiocarpal Joint Ulnar Deviates and Extends
Mr F: Midcarpal Joint Radial Deviates and Flexes
Disc is damaged by
Forced Wrist Extension and Forearm Pronation
Disc is made up of
Fibrocartilage
Muscles Acting on Wrist Flexion
Flexor Carpi Ulnaris, Flexor Carpi Radialis, Palmaris Longus
Muscles acting on Wrist Extension
Extensor Carpi Ulnaris, Extensor Carpi Radialis Longus, Extensor Carpi Radialis Brevis
MCP joint movements are
Flexion/Extension, Abduction/Adduction
IP Movements are
Flexion/Extension
Thumb Movements are
Flexion, Extension, Abduction, Adduction, Opposition
Muscles acting on the Hand
Flexor Digitorum Superficialis, Flexor Digitorum Profundus, Flexor Pollicis Longus
5 Intrinsic Muscles of the Hand which assist the forearm muscles to close the hand, acting on the thumb and little finger:
Flexor Digiti Minimi, Opponens Digiti Minimi, Flexor Pollicis Brevis,
Opponens Pollicis,
Adductor Pollicis
Sesamoid Bones
Often form in response to strain and acts like pulleys and increase the tendon’s ability to transmit muscle force; they provide a smooth surface for tendons to go over
Muscles Opening the Hand
Extensor Digitorum, Extensor Digiti Minimi, Extensor Digiti Minimi, Extensor Indicis