Knee Sports MCQs

The popliteus tendon inserts on the lateral femoral condyle. Relative to the lateral collateral ligament (LCL) insertion on the femur, where is the femoral footprint of the popliteus tendon located?

The anterior cruciate ligament (ACL) is composed of two functional bundles named for their tibial insertion sites. Which of the following statements regarding the anteromedial (AM) bundle is correct?

A patient sustains an injury to the posterolateral corner of the knee. The popliteofibular ligament is identified as a critical stabilizer. From which structure does it anatomically originate?

The popliteus tendon is a critical component of the posterolateral corner of the knee. In relation to the lateral collateral ligament (LCL) footprint, where does the popliteus tendon insert on the lateral femoral condyle?

The anterior cruciate ligament (ACL) consists of two main functional bundles. During knee flexion, which bundle is tightest and what is its primary stabilizing function?

In reconstructing the posterolateral corner (PLC) of the knee, identifying anatomic landmarks is critical. On the lateral femoral condyle, where is the popliteus tendon attachment located relative to the fibular collateral ligament (FCL) origin?

During an anatomic reconstruction of the posterolateral corner of the knee, the surgeon must accurately identify the fibular insertion of the lateral collateral ligament (LCL). Where does the LCL insert relative to the popliteofibular ligament (PFL)?

A patient presents with isolated varus instability at 30 degrees of knee flexion, but the knee is stable to varus stress at 0 degrees. Which of the following structures is the primary restraint to varus stress at 30 degrees of knee flexion?

An 18-year-old athlete sustains a multi-ligamentous knee injury, including the posterolateral corner (PLC). During reconstruction, the surgeon must identify the femoral footprint of the popliteus tendon. Where is this footprint located relative to the lateral collateral ligament (LCL) attachment?

A 28-year-old man sustains a dashboard injury to his knee during a motor vehicle collision. Examination reveals a positive posterior drawer test. The Dial test demonstrates 15 degrees of increased external rotation at 30 degrees of knee flexion compared to the uninjured side, but symmetrical external rotation at 90 degrees. Which structures are most likely injured?

A 35-year-old patient involved in a motorcycle collision sustains a knee dislocation. After reduction, the patient has a foot drop and lacks sensation over the dorsum of the foot. Which of the following specific ligamentous injury patterns is most highly associated with this neurologic deficit?

You are evaluating a 23-year-old patient with a suspected knee injury following a wrestling match. The Dial test is performed. The patient has 20 degrees greater external rotation on the injured side at 30 degrees of flexion, and 25 degrees greater external rotation at 90 degrees of flexion. What is the most accurate diagnosis?

A 28-year-old man sustains a dashboard injury to his right knee. Physical examination demonstrates a positive posterior sag sign. Which of the following bundles of the primary injured ligament is tightest in knee flexion?

A 24-year-old athlete undergoes evaluation for a suspected knee injury. Physical examination reveals a positive dial test at 30 degrees of flexion, but symmetric normal external rotation at 90 degrees. This finding indicates an isolated injury to which of the following structures?

Following an anterior cruciate ligament (ACL) reconstruction, a patient has persistent rotational instability (positive pivot shift) despite a negative Lachman test. Radiographs show the femoral tunnel placed at the 12 o'clock position in the intercondylar notch. What is the functional consequence of this specific tunnel placement?

During reconstruction of the posterolateral corner (PLC) of the knee, anatomical landmarks are critical. In an isolated injury to the popliteofibular ligament, what is the expected primary physical exam finding?

A 21-year-old football player is struck on the anteromedial aspect of his proximal tibia. On physical examination, he demonstrates 15 degrees of increased external rotation on the Dial test at 30 degrees of knee flexion compared to the contralateral knee, but normal external rotation at 90 degrees of knee flexion. Which structure(s) is/are most likely injured?

During an endoscopic ACL reconstruction, an inexperienced surgeon places the femoral tunnel entirely too far anteriorly (high at the 12 o'clock position in the notch). What abnormal graft tension pattern will this non-anatomical placement cause?