Lower Extremities Flashcards

1
Q

Strongest flexor muscle

A

Iliopsoas

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2
Q

Only extensors of the leg

A
Quadriceps muscle:
Rectus femoris
Vastus lateralis
Vastus intermedius
Vastus medialis
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3
Q
What compt of the thigh does these muscles belong?
Iliopsoas
Quadriceps femoris
Tensor fascia lata
Sartorius
Pectineus
A

Anterior compartment

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4
Q

The ANTERIOR compt of thigh is innervated by what nerve?

A

Femoral nerve

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5
Q
What compt of the thigh does these muscles belong?
ADDUCTOR longus
ADDUCTOR brevis
ADDUCTOR magnus
Gracilis
A

Medial compartment

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6
Q

The MEDIAL compartment of the thigh is supplied by what nerve?

A

Obturator nerve

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7
Q

The POSTERIOR compartment of the thigh is supplied by what nerve?

A

Sciatic nerve

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8
Q
What compt of the thigh does these muscles belong?
SEMItendinosus
SEMImembranosus
Biceps femoris
Adductor magnus
A

Posterior compartment

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9
Q

Thigh muscle with dual innervation

A

Adductor magnus

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10
Q

Origin of sartorius and TFL

A

ASIS

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11
Q

Origin of rectus femoris

A

AIIS

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12
Q

Common insertion of iliacus and psoas

A

Lesser trochanter of the femur

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13
Q

Common insertion of the quadriceps femoris

A

Patellar tendon

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14
Q

Contents of femoral triangle

NAVEL

A

Femoral Nerve, (Sheath), Artery, Vein, Lymphatics

lat to med

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15
Q

Contents of femoral sheath

A
Femoral artery (lat)
Femoral vein (intermediate)
Femoral canal (medial)
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16
Q

Funnel-shaped fascial tube formed by inferior prolongation of the ilioposoas and transversalis fascia of the abdomen

A

Femoral sheath

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17
Q

Nerve blocked in femoral vein catheterization

A

Genitofemoral n.

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18
Q

Femoral vein lies _____ to the femoral a.

A

medial

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19
Q

Contents of the adductor canal

A

Femoral artery and vein
Saphenous nerve
Nerve to vastus medialis

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20
Q

Extensor of thigh

A

Gluteus maximus

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21
Q

Adbuctor and medial rotator of the thigh

A

Gluteus medius

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22
Q

Lateral rotator of the thigh

A

Piriformis

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23
Q

Action and innervation of the anterior compt of thigh

A

Flexion

Femoral nerve

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24
Q

Action and innervation of posterior compt of thigh and gluteus maximus

A
Extension
Sciatic n (post compt)
Inferior gluteal (g. maximus)
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25
Q

Action and innervation of medial compt of thigh

A

ADduction

Obturator n.

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26
Q

Action and innervation of gluteus medius and minimus

A

ABduction

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27
Q

6 Branches of Lumbar Plexus

A
Iliohypogastric
Ilioinguinal
Genitofemoral
Lat Femoral Cutaneous
Femoral Nerve
Obturator Nerve
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28
Q

Spinal roots in lumbar plexus

A

L1-L4

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29
Q

Supplies lower part of the ant abdominal wall

A

IlioHYPOGASTRIC

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30
Q

Supplies skin of groin and scrotum/ labia majora

A

IlioINGUINAL

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31
Q

Responsible for cremasteric reflex

A

Genitofemoral nerve

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32
Q

Supplies skin over the lateral surface of the thigh

A

Lateral femoral cutaneous n.

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33
Q

Largest branch of the lumbar plexus; supplies muscles on anterior thigh and skin on the antero-medial aspect

A

Femoral n.

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34
Q

Supplies the medial thigh muscles and skin on the medial aspect of thigh

A

Obturator n.

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35
Q

Area innervated by the sciatic n.

A

Skin of the foot and leg, post thigh muscles

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36
Q

Nerve assoc w/ weakened abduction of the thigh by gluteus MEDIUS; “waddling gait”

A

Superior gluteal n.

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37
Q

Weakness in lateral rotation and flexion of the thigh

A

Inferior gluteal n.

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38
Q

Fascial compartments of the thigh

A

Anterior, posterior and medial

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39
Q

What nerve is affected when there is diff in climbing the stairs or rising from a chair? Presents with weakness in laterally rotating and extending the thigh.

A

Inferior gluteal n.

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40
Q

Safest part of the buttock for IM injections

A

Superolateral

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41
Q

Condition where the sciatic nerve is assoc w/ pain radiating from the back of the thigh to the lower back

A

Sciatica

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42
Q

Abscess of the psoas major can irritate what nerve?

presents as weakness in flexing the thigh and extending the leg

A

Femoral n.

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43
Q

Nerve affected when harvesting for CABG; presents with pain on the medial aspect of the leg and foot; no motor loss

A

Saphenous nerve

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44
Q

Nerve lesioned in the pelvis; diff in adducting the thigh; (+) paresthesia in the skin of the medial thigh

A

Obturator n. lesions

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45
Q

Decreased angulation of the femur;
caused by fracture of the neck;
ABduction limited

A

Coxa vara

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46
Q

Increased angulation of the femur;
caused by congenital dislocation;
ADduction limited

A

Coxa valga

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47
Q

Where does the femoral shaft fracture commonly occur?

A

Upper third

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48
Q

Dreaded complication of femoral neck fracture

A

Avascular necrosis

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49
Q

MSK PE finding in pt w/ femoral neck fracture

A

Shortened with lateral rotation

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50
Q

Common location of femoral neck fracture among the elderly

A

Subcapital

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51
Q

Common location of the femoral neck fracture in the young

A

Trochanteric

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52
Q

Branch of the deep femoral a. that is the major supply of the femoral head

A

Medial femoral circumflex artery

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53
Q

Dislocation of the head of the femur usually occurs in what direction?

A

Posterior

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54
Q

3 compartments of the leg

A

Anterior
Lateral
Posterior

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55
Q

Action and innervation of the anterior leg muscles?

A

Dorsiflexion and extension

Deep peroneal n.

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56
Q

Action and innervation of the lateral leg muscles

A

Evertion and weak plantar flexion

Superficial peroneal n.

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57
Q

Action and innervation of the posterior leg muscles

A

Plantar flexion and flexion of the leg

Tibial n.

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58
Q

Common insertion of the posterior leg muscles

A

Achilles tendon

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59
Q

Triceps surae muscles

A

Gastrocnemius and soleus

60
Q

Muscle that unlocks the knee

A

Popliteus

61
Q

Contents of the popliteal fossa

A
Popliteal vessels
Common peroneal n.
Post cutaneous n.
Tibial n.
Genicular br. of obturator n.
LNs
Small saphenous v.
62
Q
Tibialis anterior
Peroneus tertius
Ext digitorum brevis
Ext digitorum longus
Ext hallucis longus
A

Anterior leg muscles

63
Q

Peroneus longus

Peroneus brevis

A

Lateral leg muscles

64
Q

Superficial grp: gastrocnemius, plantaris, soleus

Deep grp: Popliteus, FDL, FHL, Tibialis posterior

A

Posterior leg muscles

65
Q

Common insertion of post leg muscles

A

Achilles tendon

66
Q

Lateral boundaries of the popliteal fossa

A
Biceps femoris (above)
Gastrocnemius (below)
67
Q

Medial boundaries of the popliteal fossa

A

Semimembranosus, semitendinosus (above)

Gastrocnemius (below)

68
Q

How many muscle layers are there in the foot?

A

4

69
Q

All sole muscles (except for 4) are innervated by:

A

lateral plantar nerve

70
Q
What nerve innervates:
Abductor hallucis
FDB
FHL
1st lumbrical
A

Medial plantar n.

71
Q

Spinal root mediating patellar tendon reflex

A

L4

72
Q

Spinal root mediating achilles tendon reflex

A

S1

73
Q

Landmark for dorsalis pedis a.

A

b/w malleoli or 1st metatarsal space
BOUNDARIES:
Lat: tendon of EDL
Med: tendon of EHL

74
Q

Landmark for femoral a. pulsation

A

b/w ASIS and symphysis pubis

75
Q

Landmark for posterior tibial a. pulsation

A

midway b/w medial malleolus and heel

76
Q

Vein located in front of medial malleolus; drains to femoral v.

A

Great saphenous v.

77
Q

Vein behind lateral malleolus; drains into popliteal v.

A

Small saphenous v.

78
Q

The saphenous nerve lies ___ to the great saphenous vein.

A

anterior

79
Q

Branches of common peroneal n.

A

Lateral cutaneous n.

Superficial peroneal n.

80
Q

Branch of femoral n.

A

Saphenous n.

81
Q

Sciatic nerve divides into 2 nerves namely:

A

Tibial n.

Common peroneal n.

82
Q

Nerve affected in foot drop

A

Common peroneal n. (specifically deep peroneal)

83
Q

LE nerve with no motor innervation

A

Saphenous n.

84
Q

Saphenous nerve innervates what aspect of the leg?

A

Anteromedial

85
Q

Muscles for foot eversion

A

Peroneus muscles

86
Q

Muscles for foot inversion

A

Tibialis anterior and posterior

87
Q

innervates the POSTEROLATERAL surface of the leg

A

Sural n.

88
Q

Nerve affected in paresthesia in skin of the webbed space b/w the great toe and second toe

A

Deep peroneal n.

89
Q

Nerve affected when pt cannot stand on tiptoe, cannot flex leg and plantar flex

A

Tibial n.

90
Q

Intracapsular ligament preventing forward sliding of the tibia on femur, lax during flexion

A

Anterior cruciate ligament

91
Q

Intracapsular ligament that prevents backward sliding of the tibia on femur, lax during extension

A

Posterior cruciate ligament

92
Q

Attachment of ACL (APEX)

A

ANTERIOR tibia
(Post and EXternally coursing to)
LATERAL condyle of femur

93
Q

Attachment of PCL (PAIN)

A

POSTERIOR tibia
(Ant and INternally coursing to)
MEDIAL condyle of femur

94
Q

Extracapsular ligament for forced ABduction of tibia on femur

A

Medial collateral

95
Q

Extracapsular ligament for forced ADduction of tibia on femur

A

Lateral collateral

96
Q

3 most commonly injured structures in the knee

Unhappy triad of O’ Donoghue

A

Tibial collateral ligament
MCL
ACL

97
Q

(+) Anterior drawer sign signifies

A

ACL rupture

98
Q

(+) Posterior drawer sign signifies

A

PCL rupture

99
Q

Tibia is bent laterally

Rupture of tibial collat ligament

A

Genu valgum (Knock knee)

100
Q

Tibia is bent medially

Rupture of fibular collat ligament

A

Genu varum (Bowleg)

101
Q

3 bones of the ankle joint

A

Tibia (medial)
Fibula (lat)
Talus

102
Q

Nerve supply of ankle joint

A

Deep peroneal n.

Tibial n.

103
Q

Action of tibialis anterior

A

Dorsiflexion

104
Q

Action of tibialis posterior

A

Plantar flexion

105
Q

Ligaments torn on excessive inversion or plantar flexion

A

Ant taleofibular

Calcaneofibular ligaments

106
Q

Ligaments torn on excessive eversion

A

Medial/ deltoid ligament

107
Q

Foot dorsiflexed, everted

A

Talipes calcaneovalgus

108
Q

Foot plantar flexed, inverted

A

Talipes equinovarus

109
Q

Lymphatic drainage of the LE

A

Deep inguinal LN

110
Q

Landmark for dorsalis pedis a.

A

b/w malleoli or 1st metatarsal space
BOUNDARIES:
Lat: tendon of EDL
Med: tendon of EHL

111
Q

Landmark for femoral a. pulsation

A

b/w ASIS and symphysis pubis

112
Q

Landmark for posterior tibial a. pulsation

A

midway b/w medial malleolus and heel

113
Q

Vein located in front of medial malleolus; drains to femoral v.

A

Great saphenous v.

114
Q

Vein behind lateral malleolus; drains into popliteal v.

A

Small saphenous v.

115
Q

The saphenous nerve lies ___ to the great saphenous vein.

A

anterior

116
Q

Branches of common peroneal n.

A

Lateral cutaneous n.

Superficial peroneal n.

117
Q

Branch of femoral n.

A

Saphenous n.

118
Q

Sciatic nerve divides into 2 nerves namely:

A

Tibial n.

Common peroneal n.

119
Q

Nerve affected in foot drop

A

Common peroneal n. (specifically deep peroneal)

120
Q

LE nerve with no motor innervation

A

Saphenous n.

121
Q

Saphenous nerve innervates what aspect of the leg?

A

Anteromedial

122
Q

Muscles for foot eversion

A

Peroneus muscles

123
Q

Muscles for foot inversion

A

Tibialis anterior and posterior

124
Q

innervates the POSTEROLATERAL surface of the leg

A

Sural n.

125
Q

Nerve affected in paresthesia in skin of the webbed space b/w the great toe and second toe

A

Deep peroneal n.

126
Q

Nerve affected when pt cannot stand on tiptoe, cannot flex leg and plantar flex

A

Tibial n.

127
Q

Intracapsular ligament preventing forward sliding of the tibia on femur, lax during flexion

A

Anterior cruciate ligament

128
Q

Intracapsular ligament that prevents backward sliding of the tibia on femur, lax during extension

A

Posterior cruciate ligament

129
Q

Attachment of ACL (APEX)

A

ANTERIOR tibia
(Post and EXternally coursing to)
LATERAL condyle of femur

130
Q

Attachment of PCL (PAIN)

A

POSTERIOR tibia
(Ant and INternally coursing to)
MEDIAL condyle of femur

131
Q

Extracapsular ligament for forced ABduction of tibia on femur

A

Medial collateral

132
Q

Extracapsular ligament for forced ADduction of tibia on femur

A

Lateral collateral

133
Q

3 most commonly injured structures in the knee

Unhappy triad of O’ Donoghue

A

Tibial collateral ligament
MCL
ACL

134
Q

(+) Anterior drawer sign signifies

A

ACL rupture

135
Q

(+) Posterior drawer sign signifies

A

PCL rupture

136
Q

Tibia is bent laterally

Rupture of tibial collat ligament

A

Genu valgum (Knock knee)

137
Q

Tibia is bent medially

Rupture of fibular collat ligament

A

Genu varum (Bowleg)

138
Q

3 bones of the ankle joint

A

Tibia (medial)
Fibula (lat)
Talus

139
Q

Nerve supply of ankle joint

A

Deep peroneal n.

Tibial n.

140
Q

Action of tibialis anterior

A

Dorsiflexion

141
Q

Action of tibialis posterior

A

Plantar flexion

142
Q

Ligaments torn on excessive inversion or plantar flexion

A

Ant taleofibular

Calcaneofibular ligaments

143
Q

Ligaments torn on excessive eversion

A

Medial/ deltoid ligament

144
Q

Foot dorsiflexed, everted

A

Talipes calcaneovalgus

145
Q

Foot plantar flexed, inverted

A

Talipes equinovarus

146
Q

Lymphatic drainage of the LE

A

Deep inguinal LN