MSC Week 3 ORT UPDATED ACTUAL
Exam Questions and CORRECT Answers
Femoral rollback is the action of the femur rolling from anterior to posterior in flexion (T/F)? -
CORRECT ANSWER -T
Does femoral rollback happen more on the medial and lateral side - CORRECT
ANSWER - Lateral
The tibia can rotate up to 30 degrees from extension to deep flexion - CORRECT
ANSWER -T
Does tibial rotation happen gradually or all at once? - CORRECT ANSWER - gradually
Name and discuss the 6 degrees of knee motion - CORRECT ANSWER - A/P translation,
M/L translation, external/internal rotation, flexion/extension, compression/distraction,
varus/valgus.
Does pannus formation take place during OA? - CORRECT ANSWER - No, happens in
RA
Where does the degradation take place with OA? - CORRECT ANSWER - At articular
cartilage
Is there a blood test to diagnose RA? - CORRECT ANSWER - Sure is
Is there a blood test to diagnose OA? - CORRECT ANSWER - No
Name two factors used to diagnose OA? - CORRECT ANSWER - Bone on bone contact,
swelling around joint
, When and why is trauma a risk factor for OA? - CORRECT ANSWER - Damage to
articulator cartilage during trauma
What are the 4 x-ray signs for degenerative osteoarthritis? - CORRECT ANSWER -
narrowing of space between bones of the joint, presence of osteophytes, soft tissue swelling,
periarticular osteopenia, bone erosion.
The vast majority of patients with OA have wear on which compartment? - CORRECT
ANSWER - Medial tibiofemoral compartment
True or False. There are only two ways to attach the implant to the bone, cement and biologic
on/in growth? - CORRECT ANSWER -T
Which tka implant method is most common in today's market? - CORRECT ANSWER -
cement
How thick in microns is the coating for hydroxyapatite (HA)? - CORRECT ANSWER - 50
microns
Are there other options for coatings for tka components? - CORRECT ANSWER - Yes.
porous beading (3D coating), arc deposited plasma spray (2D coating), ceramic zirconium oxide
surface (for those with nickel allergy)
What two materials are contraindicated in the body when exposed to one another? - CORRECT
ANSWER - Stainless steel and titanium (galvanic reaction)
What is created when these two metals do come in contact? - CORRECT ANSWER -A
galvanic reaction
Exam Questions and CORRECT Answers
Femoral rollback is the action of the femur rolling from anterior to posterior in flexion (T/F)? -
CORRECT ANSWER -T
Does femoral rollback happen more on the medial and lateral side - CORRECT
ANSWER - Lateral
The tibia can rotate up to 30 degrees from extension to deep flexion - CORRECT
ANSWER -T
Does tibial rotation happen gradually or all at once? - CORRECT ANSWER - gradually
Name and discuss the 6 degrees of knee motion - CORRECT ANSWER - A/P translation,
M/L translation, external/internal rotation, flexion/extension, compression/distraction,
varus/valgus.
Does pannus formation take place during OA? - CORRECT ANSWER - No, happens in
RA
Where does the degradation take place with OA? - CORRECT ANSWER - At articular
cartilage
Is there a blood test to diagnose RA? - CORRECT ANSWER - Sure is
Is there a blood test to diagnose OA? - CORRECT ANSWER - No
Name two factors used to diagnose OA? - CORRECT ANSWER - Bone on bone contact,
swelling around joint
, When and why is trauma a risk factor for OA? - CORRECT ANSWER - Damage to
articulator cartilage during trauma
What are the 4 x-ray signs for degenerative osteoarthritis? - CORRECT ANSWER -
narrowing of space between bones of the joint, presence of osteophytes, soft tissue swelling,
periarticular osteopenia, bone erosion.
The vast majority of patients with OA have wear on which compartment? - CORRECT
ANSWER - Medial tibiofemoral compartment
True or False. There are only two ways to attach the implant to the bone, cement and biologic
on/in growth? - CORRECT ANSWER -T
Which tka implant method is most common in today's market? - CORRECT ANSWER -
cement
How thick in microns is the coating for hydroxyapatite (HA)? - CORRECT ANSWER - 50
microns
Are there other options for coatings for tka components? - CORRECT ANSWER - Yes.
porous beading (3D coating), arc deposited plasma spray (2D coating), ceramic zirconium oxide
surface (for those with nickel allergy)
What two materials are contraindicated in the body when exposed to one another? - CORRECT
ANSWER - Stainless steel and titanium (galvanic reaction)
What is created when these two metals do come in contact? - CORRECT ANSWER -A
galvanic reaction
