Knee Flashcards

1
Q

Femur

A

Bone of the thigh
Longest bone in the body

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2
Q

Femur - head

A

Proximal extremity
Almost spherical
Articulates with acetabulum of the hip

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3
Q

Femur - fovea

A

A pit in the centre of the head
For ligaments that attach to the hip

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4
Q

Femur - neck

A

Constricted area below the head

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5
Q

Femur - greater trochanter

A

Expanded tuberosity from lateral aspect of the neck

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6
Q

Femur - lesser trochanter

A

Smaller tuberosity from medial aspect of the neck

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7
Q

Femur - intertrochanteric crest

A

Thick, rounded line
Joins the greater and lesser trochanters anteriorly

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8
Q

Linea aspera

A

Longitudinal ridge in the posterior aspect of the shaft
Provides a point of origin for lots of muscles

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9
Q

Femur - lateral epicondyle

A

Small bony projection on the lateral surface of the lateral femoral condyle

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10
Q

Femur - medial epicondyle

A

Projection from the medial surface of the medial femoral condyle

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11
Q

Femur - lateral condyle

A

Large articular prominence
Distal end of the shaft
Articulation with the lateral tibial condyle

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12
Q

Femur - medial condyle

A

Large, medial articular prominence
At distal end of the shaft
Articulation with the medial tibial condyle

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13
Q

Femur - intercondylar fossa

A

Deep notch separating the medial and lateral condyles posteriorly

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14
Q

Femur - patellar surface

A

Anterior part of the distal femoral articular surface that articulates with the posterior surface of the patella

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15
Q

Tibial plateau - anterior and posterior cruciate ligaments

A

Limit anterior and posterior movements and dislocation of the knee

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16
Q

Tibial plateau - medial and lateral meniscus

A

Crescent shape
Fibrocartilage
Supported by coronary ligament
Tethered in by transverse ligaments
Locate the distal head of the femur
Adding congruence

17
Q

Tibial plateau - articular cartilage

A

On medial and lateral tibia condyle
Hyaline cartilage
Smooth
Friction-free movement

18
Q

Ligaments

A

Anterior cruciate ligament
Posterior cruciate ligament
Lateral collateral ligament
Lateral collateral ligament

19
Q

Ligaments - fibular (lateral) collateral ligament

A

Small ligament
Lateral epicondyle of femur to head of fibular
Prevent rocking and lateral movements and dislocation

20
Q

Ligaments - tibial (medial) collateral ligament

A

Larger
Medial epicondyle of femur to medial tibia
Blends with joint capsule and edge of the medial meniscus - reinforces the joint
Prevent rocking and lateral movements and dislocation

21
Q

Bursa

A

Between medial tibial collateral ligament and the hamstring muscles
Infrapatella, prepatella bursa - cushioning knee during kneeling, allow movement overlying skin
Suprapatella bursa - facilitates movement of quadriceps tendon over underlying structures

22
Q

Fat pad

A

Infrapatellar fat pad - just behind the patella ligament, shock absorber, facilitates movement of patellar tendon relative to other structures

23
Q

Capsule

A

Around anteriorly
Outer fibrous layer - not fully anteriorly
Area of oblique popliteal ligament and arcuate ligament - support the capsule in place
Medial and lateral patellar Retinaculum - support and forms an analogous structure to the fibrous joint capsule anteriorly

24
Q

Blood supply

A

Genicular branches do the femoral and popliteal artery
Branches from popliteal and tibial artery
Branches form anastomoses

25
Q

Nerve supply

A

Genicular nerve - sensory branches of obturator, tibial, common peroneal
Branched of obturator, femoral and sciatic nerves

26
Q

Knee flexors - semimembranosus

A

O - ischial tuberosity
I - medial condyle of tibia
A - hip extension, aid flexion when semi-flexed medial

27
Q

Knee flexors - semitendinosus

A

O - ischial tuberosity
I - pes anserine on medial aspect of upper tibial shaft
A - hip extension, aids knee flexion when semi-flexed medial rotation of knee

28
Q

Knee flexors - biceps femoris

A

O - 2 heads, long head: ischial tuberosity, short head: linear aspera
I - head of fibular and lateral condyle of tibia
A - hip extension, aids knee flexion witch knee semi-flexed with lateral rotation of knee

29
Q

Knee flexors - gastrocnemius

A

O - 2 heads, medial head: posterior aspect of medial femoral condyle and adductor tubercle, lateral head: outer aspect of lateral femoral condyle
I - tendonachilles, ridge on posterior calcaneum
A - plantar flexion of ankle, knee flexion

30
Q

Knee extensors - rectus femoris

A

O - anterior inferior iliac spine
I - tibial tuberosity
A - knee extension

31
Q

Knee extensors - vastus medialis

A

O - intertrochanteric line, linea aspera, medial supracondylar ridge
I - tibial tuberosity
A - knee extension

32
Q

Knee extensors - vastus lateralis

A

O - intertrochanteric line, greater trochanter, lateral lip of gluteal tuberosity, upper 1/2 of lateral lip of linea aspera, adjacent fascia lata
I - ligamentum patellae on lateral side which attached to the tibial tuberosity
A - knee extension

33
Q

Knee extensors - vastus intermedius

A

O - fibres from 2/3 of anterior and lateral aspects of the shaft of femur
I - ligamentum patellae which attach to tibial tuberosity
A - knee extension

34
Q

Knee medial rotators - semimembranosus

A

O - ischial tuberosity
I - medial condyle of tibia
A - hip extension, aids flexion of knee, with knee semi-flexed medial rotation

35
Q

Knee medial rotators - semitendinosus

A

O - ischial tuberosity
I - pes anserine on medial aspect of upper tibial shaft
A - hip extension, aids flexion of knee, with knee semi-flexed medial rotation

36
Q

Knee medial rotators - sartorius

A

O - anterior superior iliac spine
I - pes anserine
A - flexion of hip and knee, medial rotation of tibia of femur

37
Q

Knee medial rotators - gracilis

A

O - pubis
I - pes aspera
A - flexion if knee, with semi-flexed knee medial rotation, abduct the hip

38
Q

Knee medial rotators - popliteus

A

O - lateral aspect of lateral femoral condyle
I - fibres give rise to the arcuate popliteal ligament
A - medial rotation, unlocks knee

39
Q

Knee lateral rotators - biceps femoris

A

O - 2 heads, long head: ischial tuberosity, short head: linear aspera
I - head of fibular and lateral condyle of tibia
A - hip extension, aids knee flexion, with knee semi-flexed lateral rotation