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Lower Limb Anatomy I
Nerves
26
Anatomy
Graduate
11/11/2010

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Term
What is the root value of iliohypogastric nerve? What does it innervate?
Definition
L1 it is a cutaneous nerve
Term
What root value of the genitofemoral nerve? What skin of the leg does it innervate?
Definition
L1,2 Innervates area over the top part of femoral triangle
Term
What root value = lateral femoral cutaneous nerve? What does it innervate?
Definition
L2,3. Lateral thigh.
Term
What root value = obturator nerve? What does it innervate?
Definition
L2,3,4. Innervates skin medial thigh. Also innervates adductor muscles (+gracilis, pectineus, but NOT part of the adductor magnus)
Term
What root value of femoral nerve? What does it innervate?
Definition
L2,3,4. Some supply to pectineus. Also iliopsoas. Also quads.

Also it gives off intermediate and medial cutaneous nerves to the thigh (anterior and medial thigh skin).

Also saphenous nerve to medial LEG/
Term
What innervates gluteus minimus and medius? Root values.
Definition
Superior gluteal nerve. L4-S1
Term
What innervates gluteus maximus?
Definition
Inferior gluteal nerve. L5-S2
Term
Posterior femoral cutaneous nerve, go!
Definition
S1,2,3. Innervates posterior thigh skin and some posterior leg skin. Also, a little medial thigh.
Term
What are root values of tibial nerve?
Definition
L4-S3
Term
Tibial nerve innervation
Definition
Hamstrings (except short head of biceps femoris). Knee joint. Posterior compartment.

Medial plantar nerve = skin to 3.5 digits medial foot
Lateral plantar nerve = skin to 1.5 digits and rest of lateral foot.

Sural nerve = lateral/posterior leg (distal)
Term
Common fibular root value
Definition
L4-S2
Term
What is the innervation of the pectineus?
Definition
Obturator and femoral nerves
Term
What nerve supplies biceps femoris?
Definition
Both the tibial (to the long head) and the COMMON fibular (to the short head)
Term
What is innervated by deep fibular?
Definition
Skin between 1st and 2nd toes. Also, anterior compartment of the leg.
Term
What about superficial peroneal?
Definition
Lateral compartment. Also goes to dorsum of foot skin, and a little lateral lower leg skin.
Term
What is the order of the gluts from superficial to deep
Definition
Maximus, medius, minimus
Term
Where do the hamstrings arise?
Definition
Ischial tuberosity.
Term
Which muscles abduct the thigh?
Definition
The abductor muscles are in the lateral compartment of the thigh. They include gluteus medius and minimus, tensor fasciae latae, piriformis, and obturator internus.
Term
What flexes the hip?
Definition
The iliopsoas is a combination of the iliacus muscle and the psoas major which inserts on the lesser trochanter of the femur. It is the most powerful hip flexor. Other hip flexors include sartorius, rectus femoris, and pectineus. These muscles are in the anterior compartment of the thigh, with the exception of pectineus (medial compartment).
Term
What adducts the hip?
Definition
adductors in medial compartment
Term
What extends the hip?
Definition
The major hip extenders are the hamstrings--semimembranosus, semitendinosus, and biceps femoris. They are in the posterior compartment. Gluteus maximus, in the lateral compartment, is also an important muscle for powerfully extending the hip.
Term
What does medial rotation of the hip?
Definition
the adductors and gluteus medius, minimus, and tensor fasciae latae are the medial rotators of the thigh.
Term
What are the lateral rotators of the hip?
Definition
Gemmeli, obturator internus, piriformis, quadratus femoris
Term
Where do the hip adductors insert?
Definition
linea aspera of the femur
Term
What tendon lies in the sustentaculum tali?
Definition
Flexor hallucis longus. This is a calcaneal medial projection which supports the talus.
Term
Where does the spring ligament go?
Definition
sustentaculum tali to navicular
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