Leg Muscles - Post Sup

Question 1

What are they

Answer 1

superficial + deep flexors (don’t flex ankle except for GC)

Question 2

List Superficial flexors

Answer 2

• Gastrocnemius
• Soleus
• Plantaris

Question 3

Gastrocnemius: Origin, Insertion, and Function

Answer 3

Origin: Lat. head - postero. surface lat femoral condyle; Med. head - post. surface medial femoral condyle
Insertion: post calcaneus via calcaneal tendon
Function: plantar flex foot + flex knee

Question 4

Soleus: Origin, Insertion, and Function

Answer 4

Origin: soleal line, med. tibial border, head and post border of fibula
Insertion: post calcaneus via calcaneal tendon
Function: plantar flex foot

Question 5

Plantaris: Origin, Insertion, and Function

Answer 5

Origin: lat. supracondylar lineof femur + oblique popliteal lig.
Insertion: post calcaneus via calcaneal tendon
Function: plantar flex foot + flex knee

Question 6

What is the innervation

Answer 6

tibial nerve S1, S2

Question 7

Arterial/ venous supply + its course

Answer 7

Post tibial a. + SSV

SSV penetrates fascia between the GC heads, accompanied by the sural nerve

SSV merges with deep veins to form popliteal v.

Question 8

Achilles (ankle) reflex

Answer 8

• stirke calcaneal tendon to stimulare the superficial flexors
• S1 + S2
• hold foot dorsiflexed/extended

Question 9

What characterizes plantaris

Answer 9

Small belly, huge tendon - can be used for tendon graft

Question 10

Triceps Suraee

• What is it
• Supply
• Functions

Answer 10

• Heads of GC + soleus
• tibial n. S1, S2
• Functions:
  
  • propel body forward when walking
  • elevate body onto toes
  • very powerful ankle flexor