Flex Of Fingers

Question 1

Flexor Digitorum Superficialis

Answer 1

Origin- med epicondyle of humerus via common flexor tendon
Insertion- palmar surface base of middle phalanx of all fingers

Innervation- Median C7-8,T1

Question 2

Flexor Digitorum Profundus

-four tendons pass below flex ret and deep to superficialis

Answer 2

Origin- med side of coronoid process and upper 3/4 of ulna, IOM, post border of ulna via aponeurosis
Insertion- palmar surface base distal phalanx of all fingers

Innervation- index/middle= ant IO branch Median C7-8,T1
- little/ring= Ulnar C8,T1

Question 3

Flexor Pollicis Brevis

Answer 3

Origin- flexor retinaculum, trapezium (deep=capitate,trapezoid)
Insertion- radial side base phalanx of thumb

Innervation- Median T1, deep part=Ulnar T1

Question 4

Flexor Pollicis Longus

Answer 4

Origin- ant surface of radius between radial tuberosity and pronator quadratus and adjacent IOM
Insertion- palmar surface base of distal phalanx of thumb

Innervation- Medial C8,T1

Question 5

Lumbricals

Answer 5

Origin- lat side FDP tendons on each finger
Insertion- lat edge dorsal digital expansion of same finger

Innervation- lat two= Median T1
- med two= Ulnar T1