Superficial Structures - Part 6 Flashcards

1
Q

What type of joint is the knee joint?

A

Hinge joint

- condyloid joint

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2
Q

What does the knee joint connect?

A

The femur and the tibia

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3
Q

What movement does the knee joint allow? (2)

A
  1. Flexion

2. Extension

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4
Q

What kind of joint is the shoulder joint?

A

Ball and socket

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5
Q

What does the shoulder joint articulate with? (2)

A
  1. Humerus

2. Scapula

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6
Q

What does the shoulder joint include? (2)

A
  1. 8 bursae

2. 5 ligaments

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7
Q

What is the most mobile joint in the body?

A

The shoulder joint

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8
Q

How does superficial fat appear on US?

A

Medium shade of gray

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9
Q

How do muscles appear on US?

A

Low to medium shade of gray echo pattern with hyper echoic striations

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10
Q

How does the peritoneal line appear on US?

A

Hyper echoic linear structure anterior to the peritoneal cavity in the deepest layer of the abdominal wall

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11
Q

How do tendons appear on US in a longitudinal plane?

A

Homogeneous with hyper echoic linear bands throughout

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12
Q

How do ligaments appear on US in a longitudinal plane?

A

Homogeneous with compacted hyper echoic linear bands

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13
Q

How do ligaments appear on US in a transverse plane?

A

Spotted appearance

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14
Q

How does a bursae appear in a sagittal plane?

A

Thin linear hypo echoic structure that merges with the surrounding fat
- hard to see in the transverse plane

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15
Q

How do synovial sheaths appear on US?

A

Thin hypo echoic line beneath the tendon

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16
Q

How do peripheral nerves appear on US?

A

Echogenic structures and tend to be slightly hypo echoic compared with the tendons and ligaments

17
Q

What frequency do you use with the abdominal wall to get optimal resolution?

A

10-17MHz

18
Q

What are the indications of an anterior abdominal wall exam? (5)

A
  1. Trauma
  2. Hernia
  3. Palpable mass
  4. Post surgery
  5. Evaluate mass from previous medical imaging study
    - eg) CT
19
Q

What are the indications of a MSK exam? (6)

A
  1. Trauma
  2. Pain
  3. Palpable mass
  4. Hernia
  5. Decrease in motion
  6. Evaluate mass from previous medical imaging study
    - eg) CT
20
Q

What is the cause of an abdominal wall abscess?

A

Infection

21
Q

What are the clinical findings for an abdominal wall abscess? (3)

A
  1. Palpable abdominal wall mass
  2. Fever
  3. Leukocytosis
22
Q

What is the US appearance of an abdominal wall abscess? (2)

A
  1. Hypo echoic or anechoic mass anterior to the peritoneal fascial plane
  2. May demonstrate posterior acoustic enhancement or shadowing
23
Q

What are 3 differential diagnosis of an abdominal wall abscess?

A
  1. Hematoma
  2. Hernia
  3. Seroma
24
Q

Lipoma

A

Growth of fat cells in a thin, fibrous capsule

25
Q

What is the clinical finding of a lipoma?

A

Palpable superficial mass

26
Q

What is the US appearance of a lipoma? (2)

A
  1. Isoechoic to hypo echoic superficial mass

2. Smooth wall margins

27
Q

What are 2 differential diagnosis of a lipoma?

A
  1. Lymph node

2. Leiomyoma

28
Q

What are the causes of rectus sheath hematoma? (7)

A
  1. Trauma
  2. Pregnancy
  3. Long-term steroid use
  4. Coughing
  5. Sneezing
  6. Heavy exercise
  7. Anticoagulant therapy
29
Q

What are the clinical findings of rectus sheath hematoma? (2)

A
  1. Abdominal pain

2. Abdominal mass

30
Q

What is the US appearance of rectus sheath hematoma?

A

Hypo echoic or anechoic mass located in the rectus muscle or between the sheath and muscle

31
Q

What are 2 differential diagnosis of rectus sheath hematoma?

A
  1. Abscess

2. Hernia

32
Q

What can cause an umbilical hernia?

A

Defect in the abdominal muscles

33
Q

What is a clinical finding of an umbilical hernia?

A

Visual or palpable umbilical mass

34
Q

What is the US appearance of an umbilical hernia?

A

Extension of the intestines and/or omentum through a defect in the abdominal wall

35
Q

What are 2 differential diagnosis of an umbilical hernia?

A
  1. Hematoma

2. Abscess