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Anatomy Exam 4 > Hip and Knee Joint > Flashcards

Hip and Knee Joint Flashcards

(41 cards)

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1
Q

What type of joint is the hip joint?

A

Ball-and-socket type of synovial joint

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2
Q

Describe the articular capsule of the hip joint

A
  • strong and dense fibrous structure
  • Not a complete capsule
  • Synovial membrane lines the capsule and covers portion of femur neck
  • Synovial joint inside
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3
Q

What are the ligaments of the hip joint?

A
  1. Iliofemoral ligament
  2. Pubofemoral ligament
  3. Ischiofemoral ligament
  4. Ligament capitis femoris
  5. Acetabular labrum
  6. Transverse acetabular ligament
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4
Q

Where is the iliofemoral ligament attached?

A
  1. Apex attached to AIIS

2. Base attached to intertrochanteric line

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5
Q

What does the iliofemoral ligament do?

A

Aids in avoiding hyperextension and external rotation of the hip
Helps maintain and erect posture

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6
Q

Where is the pubofemoral ligament?

A
  1. Apex blends with iliofemoral ligament

2. Base attached to superior ramus of pubis and obturator crest

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7
Q

What does the pubofemoral ligament do?

A

Aids in avoiding hyperextension, abduction, and external rotation of the hip

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8
Q

Where is the ischiofemoral ligament located?

A

Attached to body of ischium below and behind acetabulum

Fibers attach laterally to femoral neck and below greater trochanter

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9
Q

What does the ischiofemoral ligament do?

A

Aids in avoiding hyperextension and internal rotation

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10
Q

Where is the ligament capitis femoris located?

A
  1. Attached to fovea capitis femoris

2. Base goes to the transverse ligament

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11
Q

What does the ligament capitis femoris do?

A
  1. Important for children
  2. Takes blood vessels to femur head
  3. Becomes tense when flexed thigh is adducted
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12
Q

Where is the acetabular labrum located?

A

Margin of the acetabulum

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13
Q

What does the acetabular labrum do?

A

Keeps the head of the femur inside the acetabulum

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14
Q

Where is the transverse acetabular ligament located?

A

Continuation of the acetabular labrum across the acetabular notch

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15
Q

What are the arteries that supply the hip joint?

A

All derived from the obturator aretery

  1. Medial circumflex femoral
  2. Lateral circumflex femoral
  3. Inferior and superior gluteal
  4. 1st perforating
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16
Q

What happens to vessels with a hip fracture?

A

Subcapital fracture can break the vessels that go to the femur head leads to necrosis of the head

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17
Q

What are the nerves to the hip joint?

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A
  1. Femoral
  2. Obturator
  3. Superior gluteal
  4. Inferior gluteal
  5. Sciatic
18
Q

What artery is cut in a subcapital hip fracture?

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A

Retinacular artery causing the head of the femur to lose its blood supply

19
Q

What type of joint is the knee joint?

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A

Condyloid joint which allows rotation, hinge movement, and gliding

20
Q

Is the knee joint strong?

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A

Mechanically the knee joint is weak but the ligaments make it strong

21
Q

What is the articulation of the knee joint?

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A

Between the rounded condyles of the femur and covered in cartilage

22
Q

Describe the articular capsule of the knee joint

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A
  1. Fairly strong
  2. Incomplete at places due to muscles being on the inside of the capsule
  3. Attached to margins of the articular surface
  4. Strengthened by ligaments
23
Q

What is the quadriceps tendon?

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A

Tendon that encloses the patella

It is a medial and lateral retinacula

24
Q

What are the ligaments of the knee joint?

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A
  1. Patellar ligament
  2. Medial collateral ligament
  3. Fibular collateral ligament
  4. Tibial collateral ligament
  5. Oblique popliteal ligament
  6. Arcuate popliteal ligament
  7. Coronary ligament
  8. Intra-articular ligament
25
What causes the collateral ligaments to become tight?
Extension and stabilization of the knee joint
26
What do the intra-articular ligaments do?
- Provide 5 ligaments that attach the tibia to the femur 1. Transverse ligament 2. Anterior meniscofemoral ligament 3. Posterior meniscofemoral ligament 4. Anterior cruciate ligament 5. Posterior cruciate ligament
27
Describe the anterior cruciate ligament
It is the ACL of the knee - long but weak compared to the posterior cruciate - stops hyperextension of the knee - From the anterior interchondral fossa to the lateral condyle of the femur
28
Describe the posterior cruciate ligament
- Shorter but stronger than anterior cruciate ligament - Stops hyperflexion at the knee - From the posterior interchondral fossa to the medial condyle of the femur
29
What is the function of the menisci?
Deepen the articular surface
30
Where do the menisci attach?
1. Interimposed between the femoral and tibial condyles 2. Attached to the tibial condyles 3. The peripheral area is attached to the coronary ligament
31
What nerves innervate the knee joint area?
1. Femoral 2. Obturator 3. Common peroneal and tibial
32
What is the blood supply to the knee joint?
1. Genicular anastomosis | 2. Middle genicular artery to the intercondylar structures
33
What are the movements of the knee joint?
1. Flexion via the biceps femoris, semitendinosus and semimembranosus 2. Extension via quadriceps femoris
34
What is a bakers cyst?
1. Synovial fluid escapes into popliteal fossa
35
What is the most common knee injury?
Ligament sprains
36
What is the unhappy triad?
- Involved the tibial collateral ligament, medial meniscus, and ACL - Worst knee injury - Occurs when get hit on the lateral side of the knee - TIbial collateral ligament typically tears
37
What is the anterior and posterior drawer sign?
Determines cruciate tears
38
Describe the anterior cruciate drawer sign
Tests for an ACL tear | -Pull leg anteriorly and the leg will go further than it should
39
Describe the posterior cruciate drawer sign
Tests for a PCL tear | -Push leg back and it will go further back than it should
40
What is genu varum?
bow leg
41
What is genu valgum?
Knock knee

Anatomy Exam 4 (8 decks)

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