Chapter 6 mms of the UE Flashcards
Opponens pollicis
Lumbricals (radial side)
Flexor pollicis brevis
Abductor polliscis brevis
all innervated by median nerve
APB: O-scaphoid, trapezium, flexor retinaculum, and tendon of the abductor pollicis longus I-base of prox phalanx, radial side of thumb Fx-palmar abd.
OP: O-trapezium and flex retinaculum; I-1st mc; fx-opposition
FPB: superficial head: O-trapezium, trapezoid, capitate, and flex ret; I-base of prox phalanx, radial side of thumb; fx-thumb mcp flex, deep head innervated by ulnar nerve.
Lumbricals (radial side): O-tendons of flex digitorum profundus, index and middle fingers (radial and palmar sides). I-radial side of digits 2 and 3 into ext expansion. fx-MCP flex and ext of IP joints.
abductor digiti minimi
Opponenes digiti minimi
flexor digiti minimi
ADM: O-pisiform and tendon of the flexor carpi ulnaris; I-prox phalanx of the 5th MC; FX-abduction of d5
ODM-O-hook of hamate and flex retinaculum; I-5th MC; FX- opposition of D5
FDM: O-hook of hamate and flex retinaculum; I-prox phalance of d5; FX-flex of MCP joint and opposition of D5
lumbricals
palmar interossei
dorsal interossei
lumbricals: O-tendons of flex dig profundus for D4&5; I-radial side of digits 4/5 into ext expansion; FX-MCP flex and ext of IP joints of digits 4/5.
palmar interossei: O-first palmar: ulnar surface of 2nd MC; 2nd palmar radial surface of 4th metacarpal; third palmar radial surface of 5th MC. I-first palmar: ulnar surface of 2nd MC; 2nd palmar: radial surface of 4th prox phalanx; third palmar: radial surface of 5th prox phalanx. FX-adduction and assistance with MCP flex/ext of IP joints of digits 2-5.
Dorsal Interossei: O-all 4 mm arise form the adjacent sides of the MCs; I-prox phalanx on the radial aspect of the index, radial and ulnar sides of middle finger, and ulnar side of the ring finger (all into extensor digitorum). FX-abduction adn assists with MCP flex/ext of IP joints of D 2-5.
Flexor Pollicis Longus
Flexor Digitorum Profundus
Flexor Digitorum Superficialis
FDS: O- Medial epicondyle
I- Middle phalanx (two slips)
fx- flexion of PIP joints
FDP: O- proximal 2/3 of ulna and interosseous membrane
I- distal phalanx
fx-flexion of DIP joints to digits 2 and 3
FPL: O- radius, middle 1/3
I- distal phalanx of thumb
fx- flexion of IP joint of thumb
Flexor digitorum Profundus
O- Proximal 2/3 of ulna and interrosseous membrane
I- distal phalanx
fx- flexion of DIP joints to digits 4 and 5
Extensor digitorum communis
Extensor digiti minimi
Extensor indicis proprius
Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicis Longus
EDC: O- lateral epicondyle
I-Medial band to middle phalanx and lateral band to distal phalanx
fx- extension of MCP joints and contributes to extension of IP joints
EDM: O- lateral epicondyle
I- inserts into EDC at MCP level of the 5th digit
fx- extension of 5th digit and contributes to extension of IP joints
EIP: O- Ulna, middle 1/3
I- EDC at MCP level
fx- extension of MCP joint of the 2nd digit, contributes to extension of IP joints
EPL: O- ulna, middle 1/3
I- distal phalanx of thumb
fx- extension of IP joint of thumb
EPB: O- radius, middle 1/3
I-proximal phalanx of thumb
fx- extension of MCP and CMC joints
APL: O- middle 1/3 of ulna and radius
I- 1st metacarpal, radial side
fx- abduction and extension of CMC joint
Flexor carpi radialis
Palmaris longus
FCR: O- medial epicondyle
I- 2nd and 3rd metacarpal, base
fx- flexion of wrist and radial deviation
PL: O- medial epicondyle
I- palmar aponeurosis
fx- flexion of wrist
Flexor carpi ulnaris
O-medial epicondyle
I- pisiform and 5th metacarpal
fx- flexion of wrist and ulnar deviation
Extensor carpi radialis brevis
Extensor carpi radialis longus
Extensor carpi ulnaris
ECRB: O- lateral epicondyle
I- 3rd metacarpal, base
fx- extension of wrist and radial deviation
ECRL: O- supracondylar ridge of the humerus
I- 2nd metacarpal, base
fx-extension of wrist and radial deviation
ECU: O- Lateral epicondyle
I- 5th metacarpal
fx- extension of wrist and ulnar deviation
