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Functional Anatomy > Knee Joint > Flashcards

Knee Joint Flashcards

1
Q

What is the Origin of the Sartorius Muscle?

A
  • Anterosuperior Iliac Spine
  • Superior Half of the notch just distal to the spine
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2
Q

What is the Insertion of the Sartorius Muscle?

A
  • Proximal Medial surface of Tibia
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3
Q

What does the Sartorius Perform?

A
  • Knee Flexion
  • Knee Internal Rotation
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4
Q

What is the Gracilis Origin?

A
  • Anteromedial Ramus of Pubis
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5
Q

What is the Gracilis Insertion?

A

-Anteromedial Surface of the Tibia

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6
Q

What does the Gracilis Perform?

A
  • Knee Flexion
  • Knee Internal Rotation
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7
Q

What is the Origin of the Rectus Femoris?

A
  • Anteroinferior Iliac Spine (Straight Head)
  • Groove above rim of Acetabulum (Reflected Head)
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8
Q

What is the Insertion of the Rectus Femoris?

A
  • Patellar Ligament to Tibial Tuberosity
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9
Q

What does the Rectus Femoris Perform?

A
  • Knee Extension
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10
Q

What is the Origin of the Semitendinosus?

A
  • Ischial Tuberosity
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11
Q

What is the Insertion of the Semitendinosus?

A
  • Proximal Medial Tibia
  • Deep fascia of the Leg
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12
Q

what does the Semitendinosus Perform?

A
  • Knee Flexion
  • Knee Internal Rotation
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13
Q

What is the Semimembranosis Orign?

A
  • Ischial Tuberosity
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14
Q

What is the Semimembranosus Insertion?

A
  • Postmedial aspect of the tibial medial condyle
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15
Q

What does the semimembranosus perform?

A
  • Knee Flexion
  • Knee Internal Rotation
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16
Q

What is the Origin of the Biceps Femoris?

A
  • Sacrotuberous Ligament
  • Ischial Tuberosity
  • Linea Aspera
  • Lateral Supracondylar Line
17
Q

What is the Insertion of the Biceps Femoris?

A
  • Lateral Side of head of Fibula
  • Lateral Condyle of Tibia
18
Q

What does the biceps femoris do?

A
  • Flex Knee
  • Externally Rotate Knee
19
Q

What is the Origin of the Popliteus?

A
  • Posterior Lateral femoral condyle
20
Q

What is the insertion of the popliteus?

A
  • Upper posterior medial surface of tibia
21
Q

What does the Popliteus do?

A
  • Knee Flexion
  • Knee Internal Rotation
  • unlocks extended Knee
22
Q

What is the origin of the gastrocnemius?

A
  • Posterior Medial Femoral Condyle (Medial head)
  • Posterior Lateral Femoral Condyle (Lateral Head)
23
Q

What is the Insertion of the Gastrocnemius?

A
  • Posterior Calcaneus through achilles tendon
24
Q

What does the gastrocnemius do?

A
  • Plantar Flex ankle Joint
  • Flex Knee joint
25
Q

What is the Anterior Cruciate Ligament responsible for?

A
  • Preventing anterior movement of the tibia relative to the femurs position and medial rotation
26
Q

What is the Posterior Cruciate Ligament responsible for?

A
  • Preventing posterior movement of the tibia relative to the femurs position
27
Q

What is the Medial Collateral Ligament responsible for?

A
  • Preventing the knee from abducting
28
Q

What is the lateral collateral ligament responsible for?

A
  • Preventing the knee from adducting
29
Q

How do menisci get injured?

A
  • squatting, twisting, or direct contact
30
Q

Where do the Vastus Intermedius, Medialis, and Lateralis Insert?

A
  • Patella
  • Tibial Tuberosity through Patellar Tendon
31
Q

List the Knee Flexors

A

Sartorius, Gracilis, Semitendinosus, Semimembranosus, Biceps Femoris, Popliteus, Gastrocnemius

32
Q

List the Knee Extensors

A

Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius

33
Q

List the Knee Internal Rotators

A

Sartorius, Gracilis, Semitendinosus, Semimembranosus, Popliteus

34
Q

List the Knee External Rotators

A

Biceps Femoris

35
Q

How does the popliteus help with knee flexion?

A

It unlocks an extended knee by performing internal rotation (med to lat) and flexion

36
Q

Why is our MCL larger than our LCL?

A
  • There are more compressive forces on the medial leg due to how we often stand. Gravity tries to force abduction.

Functional Anatomy (4 decks)

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