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What are the 2 joints of the wrist?
What does the radiocarpal jt articulate with?
(proximal) distal radius, radioular disc articulates with the scaphoid, lunte, and triquetrum (distal)
all carpal bones
What type of jt is the radiocarpal jt?
synovial, biaxial, condyloid
What is between the carpal bones?
What type of jt is the midcarpal jt?
nonaxial, irregular/plane gliding jt
between 2 rows of carpals, contributes to wrist motion
What mvmts do you get at the radiocarpal jt?
- radial/ulnar deviation
What mvmts do you get at the midcarpal jt?
The styloid process of the radius and ulna are the attachments for what?
What is the attachment for the transverse carpal ligament?
hok of hamate (hook is on ant. surface)
What is the attachment for the common flexor tendon?
What is the attachment for the common extensor tendon?
What is another name for golfers elbow?
What is another name for tennis elbow?
The supracondylar ridge is the attachment for what muscle?
extensor carpi radialis longus
What are the 4 proximal carpals?
What are the 4 distal carpals?
Where does the (distal) ulnar collateral lig. attach?
styloid process of ulna to the pisiform and triquetrum bones
What does the ulnar collateral lig. do?
provides support medially to wrist
Where does the (distal) radial collateral ligament attach?
styloid process of radius to the scaphoid and trapezium bones
What does the radial collateral ligament do?
provides support laterally to wrist
Where does the dorsal radiocarpal ligament attach?
posterior surface of distal radius to posterior surface of scaphoid, lunate, and triquetrum
What does the dorsal radiocarpal lig. do?
limits wrist flexion
not as strong as palmar radiocarpal ligament
Where does the palmar radiocarpal ligament attach?
anterior distal radius and ulna to anterior surface of scaphoid, lunate, and triquetrum
What does the palmar radiocarpal lig. do?
- thick, tough ligament
- limits wrist extension
- important for wrist fxn bc most wrist activities are performed in wrist ext.
Where does the articular disc (radioulnar disc) articulate?
at distal ulna to the lunate and triquetrum
shock absorption and a filler
What are the characteristics of the palmar fasia (aponeurosis)?
- thick, superficial on palm of hand
- covers tendons of the extrinsic muscles
- provides some protection of structures of palm
- *distal attachment (insertion) of palmaris longus
- palmaris longus and flexor retinaculum blend into this fascia
What 3 muscles are on the ant. surface of the arm and flex?
- flexor carpi radialis
- flexor carpi ulnaris
- palmaris longus
What 3 muscles are on the posterior surface of the hand and extend?
- extensor carpi radialis longus
- extensor carpi radialis brevis
- extensor carpi ulnaris