Knee Exam Competency

Question 1

Differentiate between Genu Valgum, Genu Varus, and Genu Recurvatum.

Answer 1

Genu Valgum: Knock-Kneed

Genu Varus: Bow-Legged

Genu Recurvatum: Hyperextension

Question 2

What is a normal Q-angle? How is it measured?

Answer 2

15 Degrees

Straight line from the ASIS to the center of patella and another line through tibial tuberosity and the same point on the patella

Typically FEMALES have large Q angles

Question 3

What is the normal range of motion for the knee joint?

Answer 3

Flexion: 145-150 degrees

Extension: 0 Degrees

Internal/External Rotation: 10 Degrees

Question 4

Differentiate between a Valgus and Varus Stress Test.

Answer 4

Valgus: Testing the Medial Collateral Ligament (MCL)

Varus: Testing the Lateral Collateral Ligament (LCL)

Test is done at 30 degrees and 0 degrees. If you have a positive test @ 0 Degrees, that means you might have a problem with the JOINT CAPSULE

Question 5

What are 2 tests that can test for the integrity of the ACL?

Answer 5

1. Anterior Drawer Test

2. Lachman’s Test

Question 6

What are 2 tests that can test for the integrity of the PCL?

Answer 6

1. Posterior Drawer Test

2. Reverse Lachman’s Test

Question 7

Describe the McMurray’s Test.

Answer 7

Internal Rotation/VARUS force

External Rotation/VALGUS force

• Can indicate a possible Medial or Lateral Meniscus tear

Question 8

What are you testing for when performing the Apley Grind-Compression Test and the Apley Grind-Distraction Test?

Answer 8

Compression: Possible Meniscal Injury

Distraction: Possible Collateral Ligament Damage

Question 9

What are the two test to screen for Laxity in the Patellar Ligament?

Answer 9

1. Patellar Laxity

2. Apprehension Test

Question 10

Describe the three tests that will test the integrity of the Patellar Cartilage.

Answer 10

1. Patellar Grind Test: Press down on the Patella and move it medial and lateral. (Positive test indicates: Inflammation, Chondromalaica or injury to the patellofemoral articular surfaces)
2. Patella-Femoral Grinding: Compress patella in trochlear groove and have patient flex Quadriceps against resistance (Positive Test Indicates: Chondromalacia)
3. Patellar Glide Test: Slow extend and flex the knee while placing your hand lightly over the patella (Positive Test indicates: Possible damage to the articular surface