The PCL | Structure, Functions, & Special Tests

This video tutorial explores the posterior cruciate ligament (PCL), covering its anatomy, function, and special tests used to assess its integrity. The PCL connects the tibia and femur, playing a crucial role in knee stability by restricting posterior tibial translation. The video explains the PCL's origin and insertion points, its movement patterns, and how it contrasts with the anterior cruciate ligament (ACL). Special tests like the posterior drawer and SAG sign are demonstrated to diagnose PCL tears. The tutorial also discusses the implications of PCL injuries and the importance of accurate testing, especially in acute cases with swelling.

What is the primary focus of this video tutorial?

• The anatomy and function of the patellar ligament

• The anatomy and function of the meniscus

• The anatomy and function of the PCL

• The anatomy and function of the ACL

Where does the PCL originate?

• Medial femoral condyle

• Tibial tuberosity

• Lateral femoral condyle

• Fibular head

How does the PCL differ in its path compared to the ACL?

• It runs anteriorly and laterally

• It runs posteriorly and medially

• It runs posteriorly and laterally

• It runs anteriorly and medially

What is the primary function of the PCL?

• Restrict lateral tibial translation

• Restrict posterior tibial translation

• Restrict medial tibial translation

• Restrict anterior tibial translation

Which test is used to assess the integrity of the PCL?

• Lachman test

• Anterior drawer test

• McMurray test

• Posterior drawer test

What indicates a positive posterior drawer test?

• No movement

• Lateral movement

• Firm end feel

• Mushy end feel

What is the SAG sign test used for?

• Assessing PCL tears

• Assessing ACL tears

• Assessing meniscus tears

• Assessing patellar dislocation

Why might a PCL test be negative immediately after an injury?

• Patient's age

• Incorrect test procedure

• Presence of swelling

• Lack of swelling

What can cause a false negative in a posterior drawer test?

• Relaxed hamstrings

• Tensed quadriceps

• Tensed hamstrings

• Relaxed quadriceps

What should be done if a PCL test is negative but swelling is present?

• Ignore the test

• Test again after swelling reduces

• Consult a different practitioner

• Perform a different test