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MBChB221 Musculoskeletal > Knee > Flashcards

Knee Flashcards

1
Q

Knee joint proper joints

A

Femur-tibia
Femur-patella (Patellofemoral)

Same joint cavity ie same synovial fluid

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2
Q

Meniscus Function

A

Increase articulation SA between femur and tibia = increased stability, decreased wear and tear

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3
Q

Part of Tibia that articulates with femur

A

Tibial Plateau (very flat therefore needs menisci)

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4
Q

Knee Joint type

A

Large hinge joint (huge amount of femoral cartilage allows size)

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5
Q

Knee Joint movement permitted

A

Flex/Ext

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6
Q

Part of femur that articulates with patella

A

Patellar Surface

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7
Q

Parts of femur that articulates with tibia

A

Lateral and medial condyles (Cartilagenous)

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8
Q

Patella tendon articulates with tibia at

A

Tibial Tuberosity

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9
Q

Sesamoid Bone definition

A

Bone within a tendon

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10
Q

Which tendon does patella sit within

A

Quadriceps Tendon

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11
Q

Patella Function

A

Protects quadriceps tendon, stops it from snapping during knee extension/straightening

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12
Q

Varus Joint

A

Apex points out

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13
Q

Vagus Joint

A

Apex points in (Knock knees)

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14
Q

Varus knee common in

A

Babies and elderly

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15
Q

Valgus knee common in

A

Young girls

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16
Q

5 Knee Joint Ligaments

A

Patellar Tendon/Ligament
Medial/Lateral Collateral Ligaments
Anterior/Posterior Cruciate Ligaments

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17
Q

Patellar Tendon/Ligament Connects

A

Sup = Inf Patella
Inf = Tibial Tuberosity

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18
Q

Patellar Ligament/Tendon is continuation of

A

Quadriceps Tendon

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19
Q

Medial Collateral Ligament connects

A

Medial Femoral Epichondyle to Medial Tibia

20
Q

Lateral Collateral Ligament connects

A

Lateral Femoral Epichondyle to Fibula Head

21
Q

Collateral Ligament Functions

A

Prevents knee from going valgus/Varus (ie ensures knee only does flex/ext not side-to-side)

22
Q

MCL and LCL which blends with joint capsule and which is extracapusular

A

MCL = Blends
LCL = Discrete

23
Q

Are cruciate ligaments capsular

A

No, within the knee joint but outside the synovial capsule

24
Q

Anterior Cruciate Ligament Function

A

Prevents anterior translation (tibia sliding forward on femur)

25
Q

Posterior Cruciate Ligament function

A

Prevents posterior translation (tibia sliding backwards on femur)

26
Q

ACL connects

A

Anterior Tibial SPine to Femur Lateral Condyle

27
Q

PCL connects

A

Posterior Tibial Spine to Medial Femoral Condyle

28
Q

Prepatellar Bursa Location

A

Anterior to Patella

29
Q

Infrapatella Bursae Locations

A

Inferior to patella - one superficial one deep

30
Q

Suprapatella Bursa Location

A

Between quadriceps tendon and distal femur (ie within the knee joint cavity)

31
Q

Which knee bursa is continous with the knee joint

A

Suprapatellar (meaning this is the only knee bursa which can impact overall knee eg. Inflammation, infection)

32
Q

Medial Meniscus attached to joint capsule or loose?

A

Attached = less mobile = injured more

33
Q

Lateral Meniscus attached to joint capsule or loose?

A

Loose = mobile

34
Q

Why won’t menisci ever heal

A

Cartilagenous = no blood supply

Problem as wear over time means that knee articulation SA decreases

35
Q

Most common Knee dislocation

A

Anterior

36
Q

Knee dislocation neurovascular structures at risk

A

Popliteal artery/vein, tibial and common fibular nerves

37
Q

Patella Dislocation degree of seriousness

A

Limited, as easy to put back + unlikely to damage nerves/BVs

38
Q

Knee Joint Innervation

A

Branches of all (Femoral, Sciatic, Obturator)

39
Q

Knee Joint Vascular Supply

A

Lots: (Femoral, Lat Femoral Cirxumflex, Popliteal, Ant Tib, Cirxumflex Peroneal)

40
Q

L2 Myotome

A

Hip Flexion

41
Q

L3 Myotome

A

Knee Extension

42
Q

L4 Myotome

A

Ankle Dorsiflexion

43
Q

L5 Myotome

A

Great Toe Extension

44
Q

S1 Myotome

A

Ankle Plantarflexion

45
Q

Lateral Force to Knee tears

A

Terrible Triad

Medial Collateral Lig
Anterior Cruciate Lig
Medial Meniscus (though can be Lateral Meniscus)

MBChB221 Musculoskeletal (26 decks)

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