Wrist Flashcards
Where is the Radiocarpal Joint Located?
Proximally: Distal end of the RADIUS
RADIOULNER DISK
Distally: Scaphoid
Lunate
Triquetrum
List the joints that are found in the carpals (wrist)?
Radiocarpal
Midcarpal
What motions occur in the BIAXIAL of the RADIOCARPAL Joint?
Flexion - Extension
Radial - Ulnar Deviation
Circumduction
Where is the MIDCARPAL (Intercarpal) Joint located?
Between the two rows of carpals.
What movement occurs at the nonaxial of the Midcarpal Joint?
Gliding Motion
*No access of rotation
The Radiocarpal is what type(s) of joint(s)?
Synovial
Condyloid
Biaxial
The Midcarpal is what type(s) of joint(s)?
Irregular
Nonaxial
What is the normal degree of wrist flexion?
90 degrees
What is considered to be normal degrees for wrist extension?
70 degrees
What is considered to be the normal degrees for wrist Ulnar Deviation?
35 degrees
What is considered to be the normal number of degrees for Radial Deviation of the wrist?
25 degrees
What are the names of the carpals in the proximal row (lateral to medial)?
Pisiform
Triquetrum
Lunate
Scaphoid
What are the names of the carpals in the Distal row (lateral to medial)?
Hamate
Capitate
Trapezoid
Trapezium
Where is the Styloid Process located??
Distal, Lateral Radius
Where is the Hook of the Hamate located?
Anterior surface of Hamate
Which Bony Landmark is common for FLEXOR Tendon Attachment?
Medial Epicondyle
Which Bony Landmark is common for EXTENSOR Tendon Attachment?
Lateral Epicondyle
Which Bony Landmark is common for EXTENSOR CARPI RADIALIS LONGUS Attachment?
Supracondylar Ridge
What are the 4 basic ligaments of the radiocarpal joint?
Radial Collateral
Ulnar Collateral
Palmer Radiocarpal
Dorsal Radiocarpal
Where does the Radial Collateral Ligament attach?
Styloid Process of Radius
Scaphoid and Trapezium Bones
What does the Radial Collateral Ligament do?
Provides Lateral support to the Wrist
Where does the Ulnar Collateral Ligament attach?
Styloid Process of the Ulna
Pisiform & Triquetrum Bones
What does the Ulnar Collateral Ligament do?
Provides Medial support to the Wrist
Where does the Palmar Radiocarpal Ligament attach?
Anterior Distal Radius and Ulna
Anterior surface of Scaphoid, Lunate & Triquetrum Bones
What does the Palmar Radiocarpal Ligament do?
Important for Wrist Extension.
Where does the Dorsal Radiocarpal Ligament attach?
Posterior Surface of Distal Radius
to
Posterior Surface of Scaphoid, Lunate & Triquetrium
What does the Dorsal Radiocarpal Ligament do?
Limits Wrist Flexion.
Where is the joint capsule located?
It encloses the radiocarpal joint
What do the Joint Capsule and Articular Disk do?
They act as shock absorbers and filler.
What is another term for Palmar Aponeurosis?
Palmar Fascia
What are the ANTERIOR Muscles of the Wrist?
Flexor Carpi Ulnaris
Flexor Carpi Radialis
Pulmaris Longus
What are the POSTERIOR Muscles of the Wrist?
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Extensor Carpi Ulnaris
What are the two common PROXIMAL Attachments?
Wrist Flexors: Medial Epicondyle
Wrist Extensors: Lateral Epicondyle (most)
What is the Distal attachment or insertion for the muscles of the wrist?
The Metacarpals
What muscles aide in FLEXION?
Flexor Carpi Radialis
Flexor Carpi Ulnaris
What muscles aide in EXTENSION?
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Extensor Carpi Ulnaris
What muscles aide in RADIAL DEVIATION?
Flexor Carpi Radialis
Extensor Carpi Radialis Longus
What muscles aide in ULNAR DEVIATION?
Flexor Carpi Ulnaris
Extensor Carpi Ulnaris
Posterior Muscles are associated with what nerve?
Anterior Muscles Radially are associated with what nerve?
Anterior Muscles Ulnarly are associated with what nerve?
Radial
Medial
Ulnar
