Ch. 10: Knee questions and answers with rated solutions

Ch. 10: Knee questions and answers with rated solutions The anterior cruciate ligament (ACL) serves as a static stabilizer against all of the following movements except anterior translation of the tibia on the femur During open-chained kinetic exercise, at what range of motion (ROM) is the strain on the ACL the greatest? 0° to 30° of flexion Which of the following is the strongest ligament of the knee and the primary stabilizer? Posterior cruciate ligament (PCL) Which of the following activities would be the most difficult if the PCL was torn Backward running During the screw-home mechanism, the tibia externally rotates on the femur. Popliteus The roles of the menisci do not include which of the following? Allow for extremes of flexion and extension On what bony structure does the iliotibial (IT) band insert? Gerdy's Tubercle What muscles are included in the pes anserine group? Gracilis, sartorius, and semitendinosus What nerve roots lead to innervation of the knee? L3-S2 Which force is the most disruptive to the collateral knee ligaments? Tension What is indicated by an enlargement of the tibial tuberosity? Osgood-schlatters disease A posterior sag typically indicates injury to what ligament? PCL Which of the following is the origin and insertion of the Sartorius? Origin on the anterior superior iliac spine and inserts on the pes anserine At which position should the knee be placed in the order to palpate the menisci? 45 degree angle Injury to which of the following would cause edema instead of effusion? LCL Which of the following is indicated by a ballottable patella Knee effusion Which of the following can occur following ACL surgery? Loss of patellar function In what position should the knee be placed when performing the anterior drawer test? 90 degrees of knee flexion What injury is assessed using the noble compression test IT band friction syndrome An athlete with a dislocated patella will present with the knee in Flexion Which of the following is the end-feel for knee extension? Firm What bony landmark does the patella glide through as the knee flexes and extends? Femoral Trochlea The tibiofemoral joint has a double condyloid articulation that allows for how many degrees of freedom of movement? 3 degrees Which of the following is not a true statement about the MCL? The MCL is a cordlike structure Which part of the joint capsule is supported by the arcuate ligament? Posterolateral The menisci are attached to the tibia at their peripheries by which of the following ligaments? Coronary Which of the following muscles is not one of the four muscles that make up the quadriceps femoris muscle group? Biceps Femoris At what degree of knee flexion does the IT band shift behind the lateral femoral epicondyle, giving it a knee flexor angle of pull? 30 degrees What ligament can be palpated easily placing the knee in 90 degrees of flexion and externally rotating and abducting the hip? LCL When compared to the gold standard of arthroscopy, which test combines sensitivity and specificity, making it the best examination technique for detecting whether or not an ACL sprain is present? Lachmen Test In approximately how many degrees of flexion should the knee be placed to isolate the MCL for the valgus stress test? 25 degrees Which of the following is NOT a long-term consequence of an ACL-deficient knee? Patellofemoral pain What test can be used as a clinical evaluation tool for the presence of osteochondral defects on the knee's articular surface? Wilson's Test Based on the evidence, which is the best clinical test when assessing for a meniscal tear? McMurray Test What position should the tibia be placed in for the first pass of the McMurray test for meniscal lesions? Neutral Position One positive sign for the dynamic posterior shift test is a "clunk" or "jerk" as the knee approaches what position? Full extension Damage to which of the following structures is NOT an implication of a positive pivot shift test? Semimembranosus What position should the knee and lower leg be placed in when performing the Slocum drawer test for anterolateral capsular instability? 90° knee flexion; 25° internal tibial rotation Which is an implication of a positive quadriceps active test? Grade I PCL sprain Where does the sweep test assess for swelling? Inside the joint capsule Based on the evidence, which statement best describes the clinical usefulness of the Lachman test? The Lachman test is useful for ruling in or ruling out an ACL sprain. Which test would be appropriate to perform in an on-field evaluation situation? Valgus stress test Which muscle of the quadriceps muscle group is not directly palpable? Vastus Intermedius