SLIDE 1
The Wrist
Articulations:
The radiocarpal joint The midcarpal joint Motions: Flexion & Extension Radial & Ulnar Deviation
Structure and Function of the Wrist 8 small bones in 2 rows that - - PowerPoint PPT Presentation
Structure and Function of the Wrist 8 small bones in 2 rows that - - PowerPoint PPT Presentation
Structure and Function of the Wrist 8 small bones in 2 rows that articulate with the distal radius, ulna and proximal metacarpals The Wrist Articulations: The radiocarpal joint The midcarpal joint Motions: Flexion &
SLIDE 2
SLIDE 3
The Wrist
Palmar = anterior aspect of the wrist and hand Dorsal = posterior aspect of the wrist and hand
SLIDE 4
Distal Ulna & Radius
Ulna Radius Head Styloid Process Styloid Processes
SLIDE 5
Carpals
Left Hand Palmar Aspect (Anterior Aspect)
SLIDE 6
The Wrist with the Carpals
SLIDE 7
Carpal Tunnel Syndrome
The Transverse Carpal Ligament
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Arthrology of the Wrist
Radiocarpal Joint
Accepts approximately 80% of
the force that crosses the wrist
Concave radial surface & articular
disc
Convex carpals: scaphoid (7) & lunate
(8)
Midcarpal
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Intrinsic versus Extrinsic to the Wrist
Intrinsic-
Originating within the area and
inserting in the area
Extrinsic-
Originating outside of the area but
inserting in the area
Triangular fibrocartilage (TFC) Lunotriquetral Ligament (L T Lig) Scaphoid Lunate (S L Lig)
SLIDE 10
Myology of the Wrist
Extensor Carpi Radialis Brevis Origin Lateral epicondyle of the humerus- common extensor tendon Insertion Base of the 3rd metacarpal-dorsal aspect Innervation Radial n. Action Wrist extension, radial deviation “tidbit” What’s in a name? Common origin?
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Myology of the Wrist
Extensor Carpi Radialis Longus Origin Lateral epicondyle of the humerus, common extensor tendon Insertion Base of the second metacarpal- dorsal aspect Innervation Radial n. Action Wrist extension, radial deviation “tidbit” What’s in a name? Common origin?
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Myology of the Wrist
Extensor Carpi Ulnaris Origin Lateral epicondyle of the humerus-common extensor tendon and posterior border of the middle 1/3 of the ulna Insertion Base of the 5th metacarpal-dorsal surface Innervation Radial n. Action Wrist extension, ulnar deviation “tidbit” What’s in a name? Common origin?
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Myology of the Wrist
Flexor Carpi Radialis Origin Medial epicondyle of the humerus- common flexor tendon Insertion Base of the 2nd metacarpal-palmar aspect Innervation Median n. Action Wrist flexion, radial deviation “tidbit” What’s in a name? Common origin?
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Myology of the Wrist
Flexor Carpi Ulnaris Origin Medial epicondyle of the humerus- common flexor tendon and posterior border of the middle 1/3
- f the ulna
Insertion Base of the 5th metacarpal and pisiform- palmar aspect Innervation Ulnar n. Action Wrist flexion, ulnar deviation “tidbit” What’s in a name? Common origin?
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Myology of the Wrist
Palmaris Longus Origin Medial epicondyle of the humerus- common flexor tendon Insertion Transverse carpal ligament and the palmar fascia Innervation Median n. Action Wrist flexion “tidbit” Approximately 10% of the population will NOT have this muscle
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Identify!
Wrist extensors Wrist flexors Radial deviators Ulnar deviators
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Identify!
Flexor Carpi Ulnaris Palmaris Longus Flexor Carpi Radials
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