Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

OT 319 > Lecture 12: Posterior Thigh and Posterior Leg; Popliteal fossa and knee > Flashcards

Lecture 12: Posterior Thigh and Posterior Leg; Popliteal fossa and knee Flashcards

1
Q

biceps femoris attachments

A

proximal: ischial tuberosity (long head) and lateral lip of linea aspera of femur (short head)
distal: head of fibula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

biceps femoris innervation

A

tibial division of sciatic n. (long head); common fibular division of sciatic n. (short head)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

biceps femoris action

A

hip extension; knee flexion; lateral rotation of leg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

semimembranosus attachments

A

proximal: ischial tuberosity
distal: posterior medial condyle of tibia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

semimembranosus innervations

A

tibial division of sciatic n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

semimembranosus actions

A

hip extension; knee flexion; medial rotation of leg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

semitendinosus attachments

A

proximal: ischial tuberosity
distal: medial superior surface of tibia just inferior to sartorius (contributes to pes aserine)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

semintendinosus innervations

A

tibial division of sciatic n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

semitendinosus actions

A

hip extension; knee flexion; medial rotation of leg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

plantaris attachments

A

proximal: supracondylar line of femur
distal: calcaneal tuberosity medial to calcaneal tendon (via long narrow tendon referred to as “freshman’s nerve”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

plantaris innervation

A

tibial n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

plantaris actions

A

knee flexion and plantar flexion (minor)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

popliteus attachments

A

proximal: lateral condyle of femur inferior to attachment of fibular collateral ligament
distal: tibia superior to soleal line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

popliteus innervation

A

tibial n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

popliteus actions

A

knee flexion (minor); lateral rotation of femur on fixed tibia (standing), medially rotates tibia of unplanted limb (not standing). Popliteus unlocks the knee to initiate flexion of the knee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

gastrocnemius attachments

A

proximal: 2 heads of origin; lateral condyle (lateral head) and popliteal surface of femur (medial head)
distal: calcaneal tuberosity via calcaneal tendon (achilles’ tendon)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

gastrocnemius innervation

A

tibial n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

gastrocnemius actions

A

knee flexion; plantar flexion; raises heel during walking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

soleus attachments

A

proximal: soleal line of tibia and posterior surface of fibula
distal: calcaneal tuberosity via calcaneal tendon (achilles’ tendon)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

soleus innervation

A

tibial n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

soleus action

A

plantar flexion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

popliteal fossa borders

A

superior lateral border: biceps femoris
superior medial border: semimembranosus and semitendinosus
inferior: heads of gastrocnemius
roof: skin, superficial and deep fascia
floor: popliteal surface of femur, oblique popliteal ligament and fascia of popliteus

23
Q

3 main components of popliteal fossa

A

popliteal artery
popliteal vein
tibial nerve

24
Q

popliteal artery branches

A
  1. anterior tibial a.
  2. posterior tibial a.
  3. genicular branches
25
Q

popliteal artery

A

continuation from anterior thigh through adductor hiatus; transverses popliteal foss

26
Q

genicular aa.

A

branches of popliteal a., contributes to a network of vessels surrounding the knee that provides collateral circulation

27
Q

anterior tibial a.

A

runs anterior to interosseous membrane of leg to supply anterior compartment and eventually dorsum of foot

28
Q

posterior tibial a.

A

supplies posterior and lateral components of leg and plantar surface of foot

29
Q

small saphenous v.

A

originates from the lateral aspect of the dorsal venous arch of the foot; can be found travelling in close proximity to the sural n.; empties into popliteal v. in the popliteal fossa

30
Q

popliteal v.

A

continuation of the posterior tibial v,; begins at the distal border of popliteus. travels with artery. becomes femoral v. after passing through the adductor hiatus

31
Q

tibial n. branches

A

medial sural n.

32
Q

common fibular n. branches

A
  1. lateral sural n.
  2. communicating sural n.
33
Q

tibial n.

A

most superficial of the three main central components of the fossa; innervated mm. of posterior leg

34
Q

common fibular n.

A

lateral and smaller terminal branch of sciatic n. travels along the medial border of the biceps femoris and its tendon; innervates mm. of anterior and lateral leg

35
Q

lateral sural n.

A

provides cutaneous innervation to lateral leg

36
Q

medial sural n.

A

joins at a variable location with communicating sural n. to sural n. Along with sural n. provides cutaneous innervation to posterior leg

37
Q

sural n.

A

formed from the union of medial sural and communicating sural n. provides cutaneous innervation to posterior leg and lateral margin of foot

38
Q

anterior cruciate ligament (ACL)

A

from anterior intercondylar eminence of tibia, posteriorly and externally to lateral condyle of femur; resists hyperextension of the knee and anterior displacement of the tibia (weaker than PCL)

39
Q

posterior cruciate ligament

A

from posterior intercondylar eminence of tibia, anterior and internal to medial condyle of femur restricts hyperflexion of knee and posterior displacement of tibia

40
Q

medial menisci

A

c-shaped; attached to joint capsule and medial collateral ligament

41
Q

lateral menisci

A

o-shaped

42
Q

patellar ligament

A

continuation of quadriceps tendon from patella to tibial tuberosity

43
Q

patellar retinacula

A

bilateral reinforcements of joint capsule; aponeurotic expansions of the vastus medialis and lateralis

44
Q

fibular collateral ligament (lateral collateral)

A

tough, cord-like, from lateral epicondyle of femur to head of femur; popliteus tendon intervenes between it and lateral meniscus, restricts adduction at knee

45
Q

tibial collateral ligament (medial collateral)

A

flat band from medial epicondyle of femur to superior medial surface of tibia firmly attached to medial meniscus

46
Q

oblique popliteal ligament

A

a recurrent expansion of the tendon of semimembranosus, reinforces joint capsule posteriorly

47
Q

arcuate popliteal ligaments

A

originates from posterior aspect of head of fibula, extends in a superiomedially direction over the tendon of popliteus. reinforces joint capsule posteriorly

48
Q

screw-home mechanism

A

when the knee is fully extended with the foot on the ground, the knee passively locks because of the medial rotation of the femoral condyles on the tibial plateau

49
Q

hamstring injury

A

pull or torn hamstrings are common in individuals who run/kick hard. result from tearing or evulsions of the proximal tendinous attachments of the hamstrings to the ischial tuberosity

50
Q

knee joint injuries

A

most common is ligament sprain, which can occur when the foot is fixed on the ground and cannot move and force is applied to the knee

51
Q

unhappy triad

A

tearing of TCL, medial meniscus and ACL; these structures can be torn together when there is excessive lateral twisting of the flexed knee, such as a pivot movement

52
Q

The short head of biceps femoris muscle is innervated by which nerve?

A

common fibular n.

53
Q

When the femur is fractured, the broken distal end often turns posteriorly to enter the popliteal fossa due to muscle traction. Because of its position deepest in the fossa, which structure is most vulnerable to laceration?

A

popliteal a.

54
Q

The femoral artery enters the popliteal fossa (becoming the popliteal artery) by passing through the:

A

adductor hiatus

OT 319 (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions