Foot

Question 1

Extensor Digitorum Brevis
(O, I, A)

Answer 1

O: Dorsal surface of calcaneus
I: Middle and distal phalanx of digits #2-#4 via the dorsal digital expansion.
A: Extension of digits 2 - 4 @ MTPs PIPs, & DIPs

Question 2

Extensor Hallucis Brevis
(O, I, A)

Answer 2

O: Dorsal surface of calcaneus
I: Proximal phalanx of digit #1
A: Extension of the 1stdigit @ the MTP jt.

Question 2

Abductor Hallucis
(O, I, A, N)

Answer 2

O: -Calcaneal tuberosity
I: Proximal Phalanx of digit #1
A: Abduction of digit #1 @ the MTP jt
N: Medial plantar nerve

Question 3

Flexor Digitorum Brevis
(O, I, A, N)

Answer 3

O: Calcaneal tuberosity
I: Middle phalanx of digits #2 -#5
A: Flexion of digits #2-#5 @ the MTP & PIP jts.
N: Medial plantar nerve

Question 4

Abductor Digiti Minimi Pedis
(O, I, A)

Answer 4

O: Calcaneal tuberosity
I: Proximal phalanx of digit #5
A: Abduction of digit #5 @ the MTP jt.

Question 5

Quadratus Plantae
(O, I, A)

Answer 5

O: Calcaneus
I: Tendon of flexor digitorum longus (FDL)
A: Flexion of digits #2- #5 @ the MTP, PIP, & DIP jts.

Question 6

Lumbricals Pedis
(O, I, A)

Answer 6

O+I:
#1: tendon of FDL #2 →tendon of EDL #2
#2: tendon of FDL #2/3 →tendon of EDL #3
#3: tendon of FDL #3/4 →tendon of EDL #4
#4: tendon of FDL #4/5 →tendon of EDL #5
A:
-Extension of digits #2-#5 @ the PIP & DIP jts.
-Flexion of digits #2-#5 @ the MTP jts.

Question 7

Flexor Hallucis Brevis
(O, I, A)

Answer 7

O: Cuboid & 3rd Cuneiform
I: Proximal phalanx of digit #1
A: Flexion of digit #1 @ the MTP jt.

Question 8

Adductor Hallucis
(O, I, A, N)

Answer 8

O: 2 heads
Oblique: Fibularis longus tendon & base of metatarsals #2–#4
Transverse: MTP ligament
I: Proximal Phalanx of digit #1
A: Adduction of 1st digit @ MTP jt.
N: Lateral plantar nerve

Question 9

Flexor Digiti Minimi Pedis
(O, I, A)

Answer 9

O:
-5thmetatarsal
-Fibularis longus
tendon
I: Proximal phalanx of digit #5
A: phalanx of digit #5 Flexion of digit #5 @ the MTP jt.

Question 10

Plantar Interosseus
(O, I, A)

Answer 10

3,4 & 5 @ MTP jts.

O+I:
3 muscle bellies
#1: medial side of MT #3→ medial side of phalanx 3
#2: medial side of MT #4→ medial side of phalanx 4
#3: medial side of MT #5→ medial side of phalanx 5
A: Adduction of digits # 3,4 & 5 @ MTP jts

Question 11

Dorsal Interosseus Pedis
(O, I, A)

Answer 11

O+ I:
4 muscle bellies
#1: bodies of MT 1 & 2 → medial side of toe 2
#2: bodies of MT 2 & 3 → lateral side of toe 2
#3: bodies of MT 3 & 4 → lateral side of toe 3
#4: bodies of MT 4 & 5 → lateral side of toe 4
A: Abduction of digits #2 – 4 @ MTP jts.