Compartment Rules of LEs Flashcards
General rules for posterior compartment of thigh (O, N, A)
Posterior Compartment (thigh)
- O: Ischial tuberosity
- N: Tibial n.
- A: Extend hip, flex knee
What is the one exception (2) to the rules of the posterior compartment of thigh?
Biceps Femoris, short head
- N: Common Fibular n.
- A: Flex knee only
General rules for anterior compartment of thigh (N (1 motor and 2 sensory), A)
Anterior Compartment (thigh)
- N (motor): Femoral n.
- N (sensory): Anterior cutaneous branches, Saphenous
- A: Flex hip, extend knee
What are the two exceptions (1, 2) to the rules of the anterior compartment of thigh?
Sartorius
- A: Flex, abduct and laterally rotate hip, and flex knee
Pectineus
- N: Femoral n. AND branch of Obturator n.
- A: Flex hip, adduct hip
General rules for medial compartment of thigh (O, N, A)
Medial Compartment (thigh)
- O: Pubis
- N: Obturator n.
- A: Adduct hip
What are the three exceptions (2, 1, 1) to the rules of the medial compartment of thigh?
More posteromedial 1/2 of Adductor Magnus (other 1/2 follows normal medial compartment rules)
- N: Tibial n.
- A: Extend hip only
Gracilis
- A: Adduct hip, flex knee
Obturator Externus
- A: Laterally rotate hip only
What is the arterial blood supply of the posterior compartment of thigh (2)?
- Deep a. of the thigh (branches into perforating aa.)
- Obturator a.
What is the arterial blood supply of the anterior compartment of thigh (2)?
- Femoral a.
- Deep a. of the thigh
What is the arterial blood supply of the medial compartment of thigh (3)?
- Femoral a.
- Deep a. of the thigh
- Obturator a.
What is the venous blood supply of the posterior compartment of thigh? What does it drain into (2)?
Deep v. of thigh
- Drains into Femoral v. > External Iliac v.
AND
Obturator v.
- Drains into Internal Iliac v.
What is the venous blood supply of the anterior compartment of thigh? What does it drain into (2)?
Deep v. of thigh
- Drains into Femoral v. > External Iliac v.
What is the venous blood supply of the medial compartment of thigh?
Deep v. of thigh
- Drains into Femoral v. > External Iliac v.
AND
Obturator v.
- Drains into Internal Iliac v.
General rules for posterior DEEP compartment of leg (N (1 motor and 1 sensory), A)
Posterior DEEP Compartment (leg)
- N (motor): Tibial n.
- N (sensory): Sural n.
- A: Plantarflex ankle, flex toes
What are the two exceptions (1, 1) to the rules of the posterior DEEP compartment of leg?
Tibialis Posterior
- Plantarflex ankle, invert foot
Popliteus
- A: Laterally rotate knee
General rules for posterior SUPERFICIAL compartment of leg (N (1 motor and 1 sensory), A)
Posterior SUPERFICIAL Compartment (leg)
- N (motor): Tibial n.
- N (sensory): Sural n.
- A: Plantarflex ankle
What is the one exception (1) to the rules of the posterior SUPERFICIAL compartment of leg?
Gastrocnemius
- A: Plantarflex ankle, flex knee
General rules for anterior compartment of leg (N (1 motor and 1 sensory), A)
Anterior Compartment (leg)
- N (motor): Deep fibular n.
- N (sensory): Deep fibular n.
- A: Dorsiflex ankle, extend toes
What are the two exceptions (1, 1) to the rules of the anterior compartment of leg?
Tibialis Anterior
- A: Dorsiflex ankle, invert foot
Fibularis Tertius
- A: Dorsiflex ankle, evert foot
General rules for lateral compartment of leg (N (1 motor and 1 sensory), A)
Lateral Compartment (leg)
- N (motor): Superficial fibular n.
- N (sensory): Superficial fibular n.
- A: Plantar flex ankle, evert foot
Are there any exceptions to the lateral compartment of leg?
NOPE :)
What is a general rule for naming the foot inventor and foot evertor muscles?
- Foot inventors have “Tibialis” in their name
- Foot evertors have “Fibularis” in their name
What are the two motor/sensory nerves of the plantar foot? From what nerve do they originate?
Tibial n. exits the Tarsal Tunnel and splits into:
- Medial Plantar n.
- Lateral Plantar n.
Which four muscles receive motor innervation from the Medial Plantar n.? What are the two areas that receive sensory innervation?
Motor:
- Abductor Hallucis
- Flexor Hallucis Brevis
- Flexor Digitorum Brevis
- Lumbrical 1
Sensory:
- Medial aspect of sole of foot
- Tips and plantar aspects of medial 3 1/2 digits
Which six muscles are innervated by the Lateral Plantar n. (2 are groups)? What are the two areas that receive sensory innervation?
Motor:
- Adductor Hallucis
- Quadratus Plantae
- Flexor Digiti Minimi Brevis
- Adductor Digiti Minimi
- Lateral 3 Lumbricals
- All Interossei
Sensory:
- Lateral aspect of sole of foot
- Tips and plantar aspect of lateral 1 1/2 digits
What are the two arteries of the plantar foot? Which artery do they originate from and what branches do they each give off (2, 3)? Which artery supplies most of the blood of the plantar foot?
Posterior Tibial a. splits into:
Medial Plantar a.
- Plantar digital aa.
- Superficial plantar arch
Lateral Plantar a. (supplies most blood of plantar foot)
- Plantar digital aa.
- Plantar metatarsal aa.
- Deep plantar arch
What is the venous blood supply of the plantar foot (deep versus superficial)? What do they drain into (2)?
- Deep: accompany aa. and share same names; drain into Fibular v. and Posterior Tibial v.
- Superficial: drain into Small saphenous v. and Great Saphenous v.
What is the arterial blood supply of the dorsal foot? Which artery does it originate from and what branches does it give off (3)?
Anterior Tibial a. becomes the Dorsalis Pedis a. - branches into:
- Arcuate a.
- Dorsal Metatarsal aa.
- Dorsal Digital aa.
What is the arterial blood supply of the dorsal foot? Which artery does it originate from and what branches does it give off (3)?
Anterior Tibial a. becomes the Dorsalis Pedis a. - branches into:
- Arcuate a.
- Dorsal Metatarsal aa.
- Dorsal Digital aa.
What is the venous blood supply of the dorsal foot (deep versus superficial)? What does the superficial dorsal foot drain into (2)?
- Deep: accompany aa. and share same names
- Superficial: Dorsal venous arch drains medially into Great Saphenous v. or laterally into Small Saphenous v.
