Joint Fluid Analysis

Question 1

What is the primary component of joint/synovial fluid?

Answer 1

Viscous fluid that lubricates joints

Question 2

What is pseudogout caused by?

Answer 2

Calcium pyrophosphate crystals

Question 3

What is the primary cause of gout?

Answer 3

Urate crystals

Question 4

What is the typical color of non-inflammatory synovial fluid?

Answer 4

Clear or yellow

Question 5

What color is the synovial fluid in septic arthritis?

Answer 5

Cloudy or turbid

Question 6

What is the clarity of synovial fluid in non-inflammatory conditions?

Answer 6

Clear

Question 7

What is the white cell count (WCC) threshold for inflammatory synovial fluid?

Answer 7

2000 WCC (up to 20k)

Question 8

What is the clarity of synovial fluid in acute inflammatory conditions?

Answer 8

Cloudy

Question 9

What is the WCC indicative of a cloudy appearance in infective synovial fluid?

Answer 9

> 50000

Question 10

Fill in the blank: The presence of ________ can indicate gout.

Answer 10

Urate crystals

Question 11

True or False: Non-inflammatory synovial fluid typically has a high white cell count.

Answer 11

False
OA <1000 /microL
Haemarthrosis <200

Question 12

What type of synovial fluid is characterized by a yellow to green color?

Answer 12

Infective synovial fluid

Question 13

What is the clarity of synovial fluid in pseudogout?

Answer 13

Cloudy

Question 14

What is the WCC percentage in septic arthritis?

Answer 14

60%

Question 15

What is the clarity of synovial fluid typically found in rheumatoid arthritis?

Answer 15

Cloudy