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Limbs - LCRS 2 > The knee, leg, ankle, and foot > Flashcards

The knee, leg, ankle, and foot Flashcards

1
Q

What is the small protrusion in the middle of the tibial plateau called?

A

Intercondylar eminence

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2
Q

What inserts into the tibial tuberosity?

A

Patellar tendon (through which the quadriceps act)

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3
Q

Which bone in the leg does not bear any weight?

A

Fibula

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4
Q

What protrusions in the ankle do the distal ends of the tibia and fibula form?

A

Tibia – medial malleolus

Fibula – lateral malleolus

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5
Q

What is the name of the ridge running obliquely down the posterior surface of the tibia?

A

Soleal line

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6
Q

Name all the tarsal bones.

A 
Tallus 
Calcaneus 
Cuboid 
Navicular 
Cuneiforms (1, 2 and 3)
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7
Q

What are the two main joints in the foot and where do they lie?

A 
Transverse tarsal joint (between calcaneus + tallus and navicular + cuboid)
Tarsometatarsal joint (between the most distal tarsal bones and the metatarsals)
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8
Q

How many phalanges does each of the digits have?

A

Big toe – 2

All other toes - 3

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9
Q

Where are sesamoid bones found in the foot and which tendon do these bones lie in?

A

On the dorsal surface of the foot, beneath the metatarsophalangeal joint of the big toe
It lies in the tendon of flexor hallucis brevis

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10
Q

Which tarsal bones have tuberosities?

A

Navicular and Cuboid

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11
Q

What are the three arches that are formed when the bones of the foot fit together?

A

Medial and lateral longitudinal arches

Transverse arches

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12
Q

Which bones make up the forefoot, midfoot and hindfoot?

A

Hindfoot – calcaneus and tallus
Midfoot – cuboid, navicular and cuneiforms
Forefoot – metatarsals and phalanges

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13
Q

Which muscles of the anterior compartment of the thigh do not act across the knee?

A

Iliopsoas and Pectineus

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14
Q

Which muscle in the medial compartment of the thigh acts across the knee?

A

Gracilis

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15
Q

Describe the arrangement of the three hamstrings.

A

Biceps femoris lies more laterally (its short head comes from the lateral lip of the linea aspera) and inserts into fibula
Semitendinosus and semimembranosus are more medial and insert into the tibia

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16
Q

What movement is the anterior compartment of the leg responsible for?

A

Dorsiflexion of the ankle

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17
Q

Which nerve supplies this compartment?

A

Deep peroneal nerve

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18
Q

Which artery supplies this compartment?

A

Anterior tibial artery

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19
Q

Which muscles are found in this compartment?

A

Tibialis Anterior
Extensor Digitorum Longus
Extensor Hallucis Longus

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20
Q

Describe the structure and attachment of tibialis anterior.

A

Lateral surface of the head of the tibia and travels medially
Goes in front of the medial malleolus
Attaches to the medial cuneiform + 1st metatarsal

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21
Q

What are the names of the two extensor retinacula in the foot?

A

Superior extensor retinaculum

Inferior extensor retinaculum

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22
Q

Which muscles are in the lateral compartment of the leg?

A

Peroneus longus

Peroneus brevis

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23
Q

What movement is the lateral compartment responsible for?

A

Eversion of the foot

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24
Q

Which nerve supplies this compartment?

A

Superficial peroneal nerve

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25
Which artery supplies this compartment?
Peroneal artery
26
Describe the structure and attachments of the two muscles in this compartment.
Both the muscles attach to the shaft of the fibula and run along the lateral side of the leg, behind the lateral malleolus and then: Brevis – attaches to the base of the 5th metatarsal Longus – attaches to 1st metatarsal and medial cuneiform (same as tibialis anterior but on the plantar surface)
27
Which muscles are in the posterior compartment of the leg?
Superficial: Gastrocnemius Soleus Plantaris ``` Deep: Flexor digitorum longus Flexor hallucis longus Tibialis posterior Popliteus ```
28
What movement is the posterior compartment of the leg responsible for?
Plantarflexion of the ankle | Flexion of the digits
29
Which nerve innervates the muscles in the posterior compartment?
Tibial nerve
30
Which artery supplies the posterior compartment?
Posterior tibial artery
31
What are the proximal attachments of gastrocnemius?
It attaches to the medial and lateral condyles of the femur
32
Which of the superficial posterior compartment muscles does not cross the knee?
Soleus
33
Describe the distal attachment of gastrocnemius and soleus.
Gastrocnemius and soleus fibres come together to form one tendon – Achilles tendon (calcaneal tendon)
34
What is the collective term given to the gastrocnemius and soleus?
Triceps surae
35
Describe the attachments of popliteus and explain the importance of this muscle.
Popliteus goes from the lateral condyle of the femur to the posterior surface of the tibia (near the soleal line) It is important in unlocking the knee when it needs to be flexed
36
Describe the positions of the long tendons relative to the medial malleolus.
They pass behind the medial malleolus
37
Describe the arrangement of muscles in the sole of the foot.
There are 4 layers of muscles
38
Describe the arrangement of muscles in the dorsum of the foot.
There are 2 muscles
39
Which nerve supplies extensor digitorum brevis?
Deep peroneal nerve
40
Which nerves supply the majority of intrinsic foot muscles?
The tibial nerve via the medial and lateral plantar nerves
41
Which muscles are found in layer 1 of the sole?
Abductor hallucis Abductor digiti minimi Flexor digitorum brevis
42
Which muscles are found in layer 2 of the sole?
Lumbricals | Quadratus plantae
43
Which muscles are found in layer 3 of the sole?
Flexor hallucis brevis Flexor digiti minimi brevis Adductor hallucis
44
Which muscles are found in layer 4 of the sole?
Palmar interossei | Dorsal interossei
45
Which tendon are the lumbricals and quadratus plantae attached to?
Tendon of flexor digitorum longus
46
What are the two muscles on the dorsal surface of the foot?
Extensor hallucis brevis | Extensor digitorum brevis
47
What are the boundaries of the popliteal fossa?
``` Superior lateral – biceps femoris Superior medial – semimembranosus Inferior – medial and lateral heads of gastrocnemius Floor – femur Roof – skin and fascia ```
48
What are the contents of the popliteal fossa?
Popliteal artery and vein Common peroneal nerve and tibial nerve Short saphenous vein Popliteal lymph nodes
49
Where does the short saphenous vein drain?
Into the popliteal vein
50
What does the sural nerve come off?
It is formed from a branch of the tibial nerve (medial cutaneous sural nerve) and a smaller branch of the common peroneal nerve (sural communicating branch)
51
What type of joint is the knee?
Synovial hinge joint
52
What part of the femur does the patella articulate with?
Intercondylar region of the femur
53
What are the two articulations between the femur and the tibia?
Medial and lateral femorotibial articulations
54
Which sides of the intercondylar fossa do the cruciate ligaments attach to?
Anterior cruciate – lateral | Posterior cruciate – medial
55
What is the main difference between the medial and lateral menisci?
The medial collateral ligament is attached to the medial meniscus The lateral meniscus is separate to the lateral collateral ligament
56
Name the bursae that are found around the knee.
``` Suprapatellar bursa Subcutaneous pre-patellar bursa Subtendinous pre-patellar bursa Subcutaneous infrapatellar bursa Deep infrapatellar bursa Popliteal bursa Gastrocnemius bursa Semimembranosus bursa Anserine bursa ```
57
What is the main difference between the proximal tibiofibular joint and the distal tibiofibular joint?
Proximal tibiofibular – synovial joint Distal tibiofibular – fibrous joint NOTE: they both move slightly during dorsiflexion and plantarflexion of the foot
58
Which ligaments are most commonly damaged in the ankle?
Lateral ligaments: Anterior talofibular Posterior talofibular Calcaneofibular
59
Name a broad ligament on the medial side of the ankle that is rarely damaged.
``` Deltoid Ligament Anterior tibiotalar ligament Posterior tibiotalar ligament Tibiocalcaneal ligament Tibionavicular ligament ```
60
What larger joint is the talo-calcaneonavicular joint a part of?
Transverse tarsal joint (aka mid-tarsal joint)
61
What are the three arches of the foot?
Lateral longitudinal arch Medial longitudinal arch Transverse arch
62
What structures help maintain these arches?
Ligaments and long tendons
63
Which vessel do the circumflex femoral arteries come from?
Profunda femoris
64
What is the popliteal trifurcation?
Division of the popliteal artery into the: Anterior tibial artery Posterior tibial artery Peroneal artery
65
What are the two main arteries of the foot and which parts of the foot do they supply?
Dorsalis pedis – dorsal part of the foot and digits | Posterior tibial artery – sole of the foot (via the medial and lateral plantar arteries)
66
What does the anterior tibial artery have to go through to access the anterior compartment?
Interosseous membrane
67
What is the arch shaped artery on the dorsum of the foot?
Arcuate artery
68
Which small arteries supply the digits?
Dorsal and plantar digital arteries
69
What are the main superficial veins draining the foot and leg?
Long saphenous vein (from the medial end of the dorsal venous arch, going 2 cm above and lateral to the medial malleolus and along the medial side of the leg) Short saphenous vein (from the lateral end of the dorsal venous arch, going behind the lateral malleolus)
70
Where does the great saphenous vein drain?
It passes along the medial side of the leg and it drains into the femoral vein at the saphenofemoral junction
71
Where does the short saphenous vein drain?
It drains into the popliteal vein
72
``` State the motor nerve supply for: Hip Flexors Hip Extensors Knee Extensors Knee Flexors Ankle Dorsiflexors Ankle Plantarflexors ```
``` Hip Flexors: L23 Hip Extensors: L45 Knee Extensors: L34 Knee Flexors: L5S1 Ankle Dorsiflexors: L45 Ankle Plantarflexors: S12 ```
73
What is a good way of remembering some of the sensory segmental supply?
L3 to the knee L4 to the floor L5 to the great toe S1 to the lateral side and sole of the foot
74
What does the tibial nerve divide into is it passes behind the medial malleolus?
Medial and lateral plantar nerves
75
The tibial nerve supplies all intrinsic foot muscles except one. Name this muscle.
Extensor digitorum brevis
76
What is the sural nerve made up of?
A branch of the tibial nerve (medial sural cutaneous nerve) and a smaller branch of the common peroneal nerve (sural communicating branch) NOTE: it can be used in nerve repair

Limbs - LCRS 2 (8 decks)

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