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TherEx | Patellar Stabilization Series [Part 1] | Subluxation vs Dislocation

TherEx | Patellar Stabilization Series [Part 1] | Subluxation vs Dislocation

Assessment

Interactive Video

Science, Health Sciences, Biology

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial covers patellar luxation and subluxation, starting with an overview and moving into a detailed review of knee anatomy. It explains the definitions of luxation and subluxation, highlighting the differences between them. The tutorial discusses the directions of luxation, medial and lateral, and their effects on the knee. It also introduces a grading system for luxations, explaining the implications of each grade and the associated tibial rotation.

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of the patellar ligament?

To connect the patella to the femur

To attach the patella to the tibial tuberosity

To stabilize the fibula

To support the quadriceps muscle

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is a luxation different from a subluxation?

Luxation is a partial dislocation, while subluxation is complete

Luxation requires exercise therapy, subluxation requires surgery

Luxation is a complete dislocation, subluxation is partial

Luxation involves ligament tears, subluxation does not

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which direction of patellar luxation is more common?

Medial luxation

Anterior luxation

Lateral luxation

Posterior luxation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the tibia during a lateral patellar luxation?

It rotates medially

It rotates laterally

It remains stable

It fractures

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a Grade 1 luxation, what is required to dislocate the patella?

Therapeutic exercise

Surgical intervention

Manual force

Spontaneous movement

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What characterizes a Grade 3 patellar luxation?

The patella spontaneously returns to the trochlear groove

The patella cannot be manually repositioned

The patella remains stable in the trochlear groove

The patella is permanently dislocated but can be manually repositioned

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the degree of tibial rotation expected in a Grade 4 luxation?

90 to 120 degrees

60 to 90 degrees

30 to 60 degrees

0 to 30 degrees

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