leg, ankle and foot muscles and ligs

Question 1

Ligamentous support of joints

Answer 1

Lateral ankle support
ATFL= anterior talofibular
CFL= calcaneofibular (supports ankle joint and subtalor)
PTFL= posterior talofibular

Question 2

bicafate ligament

Answer 2

dorsal calcaneonavicular

dorsal calcaneocuboid

Question 3

Deltoid ligaments

Answer 3

• anterior tibiotalar
• posterior tibiotalar
• tibiocalcaneal
• tibionavicular

Question 4

close-packed positions of the joints of the foot

Answer 4

• Tarsal Joints – full supination (inversion)
• Metatarsophalangeal – extension
• Interphalangeal – extension
* rigid, good for energy transfer

Question 5

Anterior

Answer 5

Dorsiflexors
Invertors
Deep Fibular
N:L4,L5,S1

Question 6

Lateral

Answer 6

Evertors
Superficial fibular
N: L4,L5,S1

Question 7

Posterior

Answer 7

Plantar
Inverters
Tibial Nerve:
L4,L5,S1,2

Question 8

Tibialis posterior:

Answer 8

Agonist for inversion

Small contribution to PF

Question 9

Tibialis anterior

Answer 9

Agonist for DF

Contributes to midfoot inversion

Question 10

Gastrocnemius & Soleus:

Answer 10

Agonists for PF
Small contribution to inversion
Massive PCSA and MA

Question 11

Fibularis longus & brevis

Answer 11

Agonists for eversion
Small contribution to PF
Fibularis longus crosses the plantar aspect of the foot to insert onto the medial cuneiform & base of 1st MT
> stabilises lateral longitudinal arch
> stabilises 1st ray during 1st toe ext & push-off

Question 12

tendons that cross

Answer 12

FDL & T post tendons cross

Question 13

Intrinsic foot muscles

Answer 13

provides support to arches
1. Extensor hallucis brevis 
2. Extensor digitorum brevis
- 4 layers
4 DAB and 3 PAD