JR 101 Final Exam
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ [LATEST 2026-
2027] 100% GUARANTEED
PASS
the posterior cruciate ligament is responsible for - CORRECT ANSWER-restraint to posterior
tibial translation with respect to femur
t/F: the two points of attachment for the medial collateral ligament are the distal medial
femoral condyle and the proximal fibular head - CORRECT ANSWER-false
with respect to the degrees of freedom of motion in the knee: how many are there? - CORRECT
ANSWER-6
the arcs of flexion in the knee are: - CORRECT ANSWER-deep flexion, functional, screw home
the mechanical axis of the lower extremity is determined by drawing a straight line from: -
CORRECT ANSWER-the center of the femoral head to the center of the ankle joint
when we refer to the "functional axes" of the knee, we reference the combination of rotations
around what two axes? - CORRECT ANSWER-the TEA of the femur combined with the
longitudinal axis of the tibia
,the flexion-extension axis closely corresponds to the insertion points of what two ligamentous
soft tissue structures in the knee joint? - CORRECT ANSWER-MCL and LCL
the "anatomical" or "clinical" TEA of the knee is an imaginary line that connects: - CORRECT
ANSWER-the most prominent parts of the medial and lateral epicondyles
the "surgical" TEA is an imaginary line that connects: - CORRECT ANSWER-the medial
epicondylar sulcus with the prominence of the lateral epicondyle
which distal femoral condyle in the knee joint has a sulcus - CORRECT ANSWER-medial
Whiteside's Line is: - CORRECT ANSWER-perpendicular to the surgical TEA
Whitesides line is also known as - CORRECT ANSWER-The trochlear A/P axis
Where is Whitesides line drawn from? - CORRECT ANSWER-a line drawn from the deepest part
of the trochlear groove posteriorly to the center of the intercondylar notch
t/f: the normal human knee (not operated on) has a medial pivot - CORRECT ANSWER-true
during the screw home arc of motion in the knee, the tibia will internally rotate with reference
to the femur as the knee extends - CORRECT ANSWER-false
t/f: since the knee joint requires little assistance from the muscles as it moves through the
screw home arc of motion, the resultant motion is described as "active motion" - CORRECT
ANSWER-false
, as the knee joint moves throughout the functional arc, the motion is controlled by ligaments as
well as muscles. this motion is categorized as being - CORRECT ANSWER-active
t/f: as the knee flexes throughout the functional arc of motion as we walk, and the tibia is lifted
off the ground, the femur externally rotates with reference to the tibia - CORRECT ANSWER-true
if one views the posterior condyles of the knee in the sagittal plane through the functional
flexion axis (TEA) the condylar appear (blank) from 10 degrees to 120 degrees - CORRECT
ANSWER-circular
is the deep flexion arc of motion active or passive - CORRECT ANSWER-passive
the most important biomechanical function of the patella is to improve - CORRECT ANSWER-
quadricep efficiency
t/f: the patella decreases the lever arm of the extensor mechanism - CORRECT ANSWER-false
t/f: the tibia tubercle is not part of the extensor mechanism - CORRECT ANSWER-false
in the human knee joint, the distance (in the sagittal plane) between the quadriceps force in the
knee joint and the flexion extension axis of the knee can be referred to as being a: - CORRECT
ANSWER-moment arm
t/f: triathlon CS tibial inserts are available in six thicknesses; they match the six thicknesses
option that are available for the CR tibial insert - CORRECT ANSWER-false
when referring to a CS tibial liner in the Triathlon knee system, the letter C-S stands for "cruciate
sacrificing" - CORRECT ANSWER-false
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ [LATEST 2026-
2027] 100% GUARANTEED
PASS
the posterior cruciate ligament is responsible for - CORRECT ANSWER-restraint to posterior
tibial translation with respect to femur
t/F: the two points of attachment for the medial collateral ligament are the distal medial
femoral condyle and the proximal fibular head - CORRECT ANSWER-false
with respect to the degrees of freedom of motion in the knee: how many are there? - CORRECT
ANSWER-6
the arcs of flexion in the knee are: - CORRECT ANSWER-deep flexion, functional, screw home
the mechanical axis of the lower extremity is determined by drawing a straight line from: -
CORRECT ANSWER-the center of the femoral head to the center of the ankle joint
when we refer to the "functional axes" of the knee, we reference the combination of rotations
around what two axes? - CORRECT ANSWER-the TEA of the femur combined with the
longitudinal axis of the tibia
,the flexion-extension axis closely corresponds to the insertion points of what two ligamentous
soft tissue structures in the knee joint? - CORRECT ANSWER-MCL and LCL
the "anatomical" or "clinical" TEA of the knee is an imaginary line that connects: - CORRECT
ANSWER-the most prominent parts of the medial and lateral epicondyles
the "surgical" TEA is an imaginary line that connects: - CORRECT ANSWER-the medial
epicondylar sulcus with the prominence of the lateral epicondyle
which distal femoral condyle in the knee joint has a sulcus - CORRECT ANSWER-medial
Whiteside's Line is: - CORRECT ANSWER-perpendicular to the surgical TEA
Whitesides line is also known as - CORRECT ANSWER-The trochlear A/P axis
Where is Whitesides line drawn from? - CORRECT ANSWER-a line drawn from the deepest part
of the trochlear groove posteriorly to the center of the intercondylar notch
t/f: the normal human knee (not operated on) has a medial pivot - CORRECT ANSWER-true
during the screw home arc of motion in the knee, the tibia will internally rotate with reference
to the femur as the knee extends - CORRECT ANSWER-false
t/f: since the knee joint requires little assistance from the muscles as it moves through the
screw home arc of motion, the resultant motion is described as "active motion" - CORRECT
ANSWER-false
, as the knee joint moves throughout the functional arc, the motion is controlled by ligaments as
well as muscles. this motion is categorized as being - CORRECT ANSWER-active
t/f: as the knee flexes throughout the functional arc of motion as we walk, and the tibia is lifted
off the ground, the femur externally rotates with reference to the tibia - CORRECT ANSWER-true
if one views the posterior condyles of the knee in the sagittal plane through the functional
flexion axis (TEA) the condylar appear (blank) from 10 degrees to 120 degrees - CORRECT
ANSWER-circular
is the deep flexion arc of motion active or passive - CORRECT ANSWER-passive
the most important biomechanical function of the patella is to improve - CORRECT ANSWER-
quadricep efficiency
t/f: the patella decreases the lever arm of the extensor mechanism - CORRECT ANSWER-false
t/f: the tibia tubercle is not part of the extensor mechanism - CORRECT ANSWER-false
in the human knee joint, the distance (in the sagittal plane) between the quadriceps force in the
knee joint and the flexion extension axis of the knee can be referred to as being a: - CORRECT
ANSWER-moment arm
t/f: triathlon CS tibial inserts are available in six thicknesses; they match the six thicknesses
option that are available for the CR tibial insert - CORRECT ANSWER-false
when referring to a CS tibial liner in the Triathlon knee system, the letter C-S stands for "cruciate
sacrificing" - CORRECT ANSWER-false
