Patient is laying supine on their back with knee flexed. Clinician pulls tibia anteriorly while keeping the femur and the foot stable as pictured below creating an anterior translation of the tibia.

Which of the following structures is this clinical procedure would testing the integrity of?

Question

Patient is laying supine on their back with knee flexed. Clinician pulls tibia anteriorly while keeping the femur and the foot stable as pictured below creating an anterior translation of the tibia.

Which of the following structures is this clinical procedure would testing the integrity of?

BlackTom AI · Accepted Answer

The scenario describes the patient lying supine with the knee flexed and the clinician pulling the tibia anteriorly while the femur and foot are stabilized, producing anterior translation of the tibia. This is a classic setup for assessing the integrity of the ACL, which resists anterior translation of the tibia relative to the femur.

Why this option is correct:
- The anterior cruciate ligament (ACL) primarily prevents the tibia from sliding forward (anterior translation) relative to the femur. When the clinician manually pulls the tibia forward with the femur stabilized, a positive test (increased anterior laxity or failure to restrain anterior movement) suggests a compromised ACL.
- The described mechanism corresponds to the anterior drawer test or a similar ACL-specific assessment, which targets the restraint provided by the ACL to anterior tibial movement.

Why other potential options (if presented) would typically be incorrect for this specific test:
- Posterior cruciate ligament (PCL): The PCL resists posterior translation of the tibia. A test that translates the tibia anteriorly wouldn’t primarily assess PCL integrity, and a positive PCL issue would more likely be revealed by a posterior drawer test.
- Lateral collateral ligament (LCL) or Medial collateral ligament (MCL): These ligaments stabilize the knee against varus and valgus stresses, respectively. They are not the primary restraints against anterior tibial translation, so this anterior translation test would not predominantly evaluate the collateral ligaments.
- Menisci: Although meniscal injuries can co-occur and affect knee stability, the anterior translation test is not a direct assessment of meniscal integrity. Meniscal tests (e.g., McMurray, Apley) probe the menisci more specifically.

In summary, the mechanism described directly targets the ACL’s role in preventing forward tibial movement, making anterior cruciate ligament integrity the correct focus of this clinical procedure.

2261 REHSCI 1200 SEC1010 Lecture Exam 1- Requires Respondus LockDown Browser

Patient is laying supine on their back with knee flexed. Clinician pulls tibia anteriorly while keeping the femur and the foot stable as pictured below creating an anterior translation of the tibia. Which of the following structures is this clinical procedure would testing the integrity of?

View Explanation

Log in for full answers

Similar Questions

The anterior cruciate ligament extends from the lateral condyle of the femur to the _____.

Which of the following ligaments is stretched or torn in about 70% of all serious knee injuries?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler