JR 101 EVALUATION SET ANSWERS AND QUESTIONS
SET A+
✔✔True or false: the anatomic axes in the lower extremity are represented by two
mutually exclusive
lines. - ✔✔True
✔✔When we refer to the "functional axes" of the knee, we reference the combination of
rotations
around what two axes? - ✔✔the transepicondylar axis of the femur combined with the
longitudinal axis of the tibia
✔✔The flexion-extension axis closely corresponds to the insertion points what two
ligamentous soft
tissue structures in the knee joint? - ✔✔the MCL and LCL
✔✔The "anatomical" (aka. "clinical") transepicondylar axis of the knee is an imaginary
line
that connects: - ✔✔the most prominent points of the medial and lateral epicondyles
✔✔Which distal femoral epicondyle (medial or lateral) in the knee joint has a sulcus? -
✔✔medial
✔✔Whiteside's line is: - ✔✔perpendicular to the surgical transepicondylar axis
✔✔The posterior condylar line: - ✔✔marks the outer surface boundaries of the posterior
distal femoral condyles in flexion
✔✔Whiteside's line is also known as: - ✔✔the trochlear a/p axis
✔✔Where is Whiteside's line drawn from? - ✔✔deepest part of the trochlear groove
posteriorly to the center of the
intercondylar notch
, ✔✔the normal human knee (not operated on) has a _______ pivot. - ✔✔Medial
✔✔during the screw home arc of motion in the knee, the tibia will _______________
rotate with
reference to the femur as the knee extends. - ✔✔Externally
✔✔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 _________ motion. -
✔✔Passive
✔✔as the knee joint flexes throughout the functional arc of motion as we walk, and the
tibia is lifted off the ground, the femur __________ rotates with reference to the tibia. -
✔✔Externally
✔✔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 .......: - ✔✔Active
✔✔Is the deep flexion arc of motion active or passive? - ✔✔Passive
✔✔If one views the the posterior condyles of the knee in the sagittal plane through the
functional
flexion axis (TEA), the condyles appear _________ from 10 degrees to 120 degrees. -
✔✔Circular
✔✔The most important biomechanical function of the patella is to improve ......: -
✔✔quadriceps efficiency
✔✔the patella ________ the lever arm of the extensor mechanism of the knee joint. -
✔✔increases
✔✔True or false: the tibial tubercle is apart of the extensor mechanism. - ✔✔true
✔✔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: -
✔✔moment arm
✔✔Triathlon CS tibial inserts are available in _______ thicknesses. - ✔✔9
✔✔True or false: Triathlon TS femoral augments can be used with a Triathlon Primary
PS cemented
SET A+
✔✔True or false: the anatomic axes in the lower extremity are represented by two
mutually exclusive
lines. - ✔✔True
✔✔When we refer to the "functional axes" of the knee, we reference the combination of
rotations
around what two axes? - ✔✔the transepicondylar axis of the femur combined with the
longitudinal axis of the tibia
✔✔The flexion-extension axis closely corresponds to the insertion points what two
ligamentous soft
tissue structures in the knee joint? - ✔✔the MCL and LCL
✔✔The "anatomical" (aka. "clinical") transepicondylar axis of the knee is an imaginary
line
that connects: - ✔✔the most prominent points of the medial and lateral epicondyles
✔✔Which distal femoral epicondyle (medial or lateral) in the knee joint has a sulcus? -
✔✔medial
✔✔Whiteside's line is: - ✔✔perpendicular to the surgical transepicondylar axis
✔✔The posterior condylar line: - ✔✔marks the outer surface boundaries of the posterior
distal femoral condyles in flexion
✔✔Whiteside's line is also known as: - ✔✔the trochlear a/p axis
✔✔Where is Whiteside's line drawn from? - ✔✔deepest part of the trochlear groove
posteriorly to the center of the
intercondylar notch
, ✔✔the normal human knee (not operated on) has a _______ pivot. - ✔✔Medial
✔✔during the screw home arc of motion in the knee, the tibia will _______________
rotate with
reference to the femur as the knee extends. - ✔✔Externally
✔✔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 _________ motion. -
✔✔Passive
✔✔as the knee joint flexes throughout the functional arc of motion as we walk, and the
tibia is lifted off the ground, the femur __________ rotates with reference to the tibia. -
✔✔Externally
✔✔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 .......: - ✔✔Active
✔✔Is the deep flexion arc of motion active or passive? - ✔✔Passive
✔✔If one views the the posterior condyles of the knee in the sagittal plane through the
functional
flexion axis (TEA), the condyles appear _________ from 10 degrees to 120 degrees. -
✔✔Circular
✔✔The most important biomechanical function of the patella is to improve ......: -
✔✔quadriceps efficiency
✔✔the patella ________ the lever arm of the extensor mechanism of the knee joint. -
✔✔increases
✔✔True or false: the tibial tubercle is apart of the extensor mechanism. - ✔✔true
✔✔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: -
✔✔moment arm
✔✔Triathlon CS tibial inserts are available in _______ thicknesses. - ✔✔9
✔✔True or false: Triathlon TS femoral augments can be used with a Triathlon Primary
PS cemented
