(Test 1: 7.) Joint Pain

Question 1

What is the difference between sensitivity and specificity?

Answer 1

Highly specific tests rule diseases in.

Highly sensitive tests rule diseases out.

Question 2

What are the steps to assessing a joint?

Answer 2

Observe

Palpate

Range of motion

Neurological assessment

Vascular assessment

Specialty testing

Question 3

Define a sprain versus a strain.

Answer 3

You sprain a ligament – may feel or hear a “pop”

You strain a muscle – and may feel a “grabbing sensation”

Question 4

How are likelihood ratios used to predict disease?

Answer 4

A large likelihood ratio greater than one increases the likelihood of a diagnosis.

The closer the likelihood ratio gets to zero (smaller than one) the less likely a diagnosis is.

Both directions are valuable, but tests with a likelihood ratio near to one are useless.