MSK LQ W9 - Knee Applied Anatomy & Pathologies

What percentage of patients suffering from patellofemoral pain syndrome will report recurrent symptoms?

70-90%

3 multiple choice options

What arthrokinematic motion is occurring at the tibiofemoral joint when standing up from a squat?

The femoral condyles roll anteriorly and slide posteriorly on the tibia

3 multiple choice options

The patellofemoral joint occupies its greatest contact area with the femur at what range of motion ?

60-90° of knee flexion

3 multiple choice options

A 22-year-old female soccer player presents to the clinic 1 week following a severe knee injury whereby she underwent MRI and was informed she had suffered what is termed the "terrible triad" injury. The report says she suffered the injury with her foot planted and externally rotated, a valgus force at the knee, while in a position of knee flexion and hip abduction. The 'terrible triad' implicates which of the following structures?

ACL, MCL, medial meniscus

3 multiple choice options

You are evaluating a 45-year-old female who complains of insidious onset of diffuse anterior pain in her right knee. She's had knee pain nearly every day in the past month but is happy to report that besides her typical morning stiffness, her pain is tolerable with a low dose of naproxen. She was a former high-level gymnast in her twenties but reports that since the birth of her twins when she was 35, she has struggled with weight control (current BMI = 33 kg/m2) and a consistent workout routine. Based on her subjective reports alone, which diagnosis is most likely for this patient

Osteoarthritis

3 multiple choice options

T/F: the proximal tibiofibular joint anatomically belongs to the knee but functionally belongs to the ankle/foot

true

1 multiple choice option

which of the following ligaments attaches from the medial aspect of the lateral femoral condyle to the intercondylar tibial fossa?

ACL

3 multiple choice options

which of the following ligaments attaches from the lateral surfaces of the medial femoral condyle to the posterior intercondylar tibial fossa?

PCL

3 multiple choice options

which of the following movements does the MCL stabilize or prevent at the knee?

ER and valgus

3 multiple choice options

T/F: both the LCL and MCL are taut in extension

true

1 multiple choice option

which of the following movements does the LCL stabilize or prevent at the knee?

ER and varus

3 multiple choice options

which of the menisci is larger and more C shaped?

medial

3 multiple choice options

T/F: the medial meniscus does not attach to the MCL

false

1 multiple choice option

T/F: the lateral meniscus does not attach to the LCL

true

1 multiple choice option

at which of the following locations is knee OA pain commonly located?

medial femoral condyle and patella articular surface

3 multiple choice options

which ligamentous injury grade is described as a stretch of the ligament, minor sprain, with little or no instability?

grade 1

2 multiple choice options

which ligamentous injury grade is described as severe sprain or partial tear with minimal to moderate instability?

grade 2

2 multiple choice options

which ligamentous injury grade is described as a complete tear with extreme instability?

grade 3

2 multiple choice options

what percentage of ACL injuries are non-contact?

70%

3 multiple choice options

females are at _____ increased risk to re-rupture within 2 years after ACL reconstruction

4.5x

3 multiple choice options

T/F: medial meniscus tears are more common in younger athletes while lateral tears are more common in older people

false

1 multiple choice option

which of the following values for sensitivity and specificity is accurate for a meniscal pathology composite score of > 5 positive findings?

SN = 11.2%, SP = 99.0%

3 multiple choice options

which of the following values for sensitivity and specificity is accurate for a meniscal pathology composite score of > 3 positive findings?

SN = 30.8%, SP = 90.2%

3 multiple choice options

which of the following values for sensitivity and specificity is accurate for a meniscal pathology composite score of > 1 positive findings?

SN = 76.6%, SP = 43.1%

3 multiple choice options

which of the following values for sensitivity and specificity is accurate for a meniscal pathology composite score of no positive findings?

SN = 23.4%, SP = 56.9%

3 multiple choice options