Posterior thigh and popliteal fossa Flashcards

1
Q

what does the femur articulate with proximally?

A

The acetabulum

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2
Q

What does the femur articulate with distally?

A

The Tibia

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3
Q

What is the name for the pair of ridges that run longitudinally along the dorsal surface of the femur?

A

The linea aspera

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4
Q

Name the deep fascia that surrounds the muscles of the thigh?

A

Fascia lata

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5
Q

What is the function of the three inter muscular septa that attach to the linea aspera?

A

to divide the muscles of the thigh into three compartments

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6
Q

what is the main function of the anterior compartment?

A

To extend the leg at knee joint

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7
Q

What is the main function of the medial compartment?

A

To adduct the thigh at hip joint

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8
Q

What is the main function of the posterior compartment?

A

To extend the thigh at hip joint and flex the leg at knee joint.

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9
Q

What is the name given to the muscles in the posterior compartment of the thigh?

A

The Hamstring muscles

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10
Q

Name the three hamstring muscles?

A

Biceps femoris (long head)
Semitendinosus
Semimembranosus

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11
Q

where is the common origin of the hamstring muscles?

A

Ischial tuberosity

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12
Q

What is the innervation of the hamstring muscles?

A

Sciatic nerve L5, S1, S2

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13
Q

Main function of the hamstring muscles?

A

Extend the thigh at hip joint and flex the leg at knee joint

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14
Q

Is the short head of biceps considered part of the hamstrings?

A

No

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15
Q

Which hamstring laterally rotates the thigh?

A

Biceps femoris

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16
Q

Which hamstrings medially rotates the thigh?

A

Semimembranonus and semitendinosus

17
Q

what is the origin of the hamstring part of adductor magnus?

A

the ischial tuberosity

18
Q

What is the origin of the adductor part of adductor magnus?

A

ischiopubic ramus

19
Q

What does the Sciatic nerve divide into?

A

the common fibular and tibial nerves

20
Q

Where does the common fibular run?

A

It deviates laterally

21
Q

Where does the tibial nerve run?

A

continues down he midline

22
Q

Which nerves enter the popliteal fossa?

A

The common fibular and the tibial

23
Q

Name the diamond depression located on the posterior of the knee?

A

The popliteal fossa

24
Q

Which muscles form the upper margins of the popliteal fossa?

A
Medially = semitendinosus and semimembranosus
Laterally = Biceps femoris
25
Q

What forms the lower margins of the popliteal fossa?

A
Medially = the medial head of gastrocnemius
laterally = the lateral head of gastrocnemius and plantaris
26
Q

What is the roof of the popliteal fossa formed by?

A

The deep fascia - continuous above with the fascia late of the thigh

27
Q

What are the contents of the popliteal fossa?

A

Popliteal artery and vein
Common fibular nerve
Tibial nerve