Term
| A pt comes in off the street believe he has a stress fracture on his fibula. After the interview process you realize that the pt has done nothing out of the ordinary, but does have pain. Why would it not be a stress fracture on the fibula and what would you do in the situation? |
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Definition
| The fibula does not bear weight. Refer to primary care doctor for x rays. |
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Term
| A pt comes in with a tear in the center of her medial meniscus. The doctor does not want to perform surgery and is hoping it will get better in time. Is it probable that the tear will heal on its own? Why or why not? |
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Definition
| It probably will not heal on its own because it is in the center of the meniscus and not on the peripheral border. The menisci are thin centrally and do not have a good blood supply to them. |
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Term
| A young pt comes in with knee pain. She recently had a friend tear her MCL and she asks you about what position her ligaments are the strongest at. How would you explain the positions that are most supportive for the MCL and LCL? |
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Definition
| The MCL is strongest anywhere between full extension and 15° of flexion. The LCL is strongest at or near full extension. |
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Term
| If a pt comes in with knee pain and you begin to palpate the patella and you move the pt into flexion which way should you feel the patella move? |
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Definition
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Term
| A patient comes in after having their patella removed. They ask if they will ever be able to have full range again what would you say? |
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Definition
| Unfortunately, you will not be able to get the last 15° of extension and you will most likely notice a decrease in your quad strength. |
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Term
athrokinematics of closed chain
flexion/extension of the knee |
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Definition
-the convex femoral condyles moving on the fixed tibial plateau
-roll and glide are in opposite directions
[image] |
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Term
arthrokinematics of open chain
knee flexion/extension |
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Definition
-concave surface of the tibial plateau moving on the fixed convex femoral condyles
-the roll and glide occur in the same direction
[image] |
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Term
general rules about arthrokinematics
concave/convex rule |
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Definition
-convex on concave = opposite roll and glide
-concave on convex = same roll and glide |
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Term
what rotation (medial or lateral) is needed to unlock the knee via the screw-home mechanism? |
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Definition
-medial rotation is needed to unlock the screw-home mechanism (slides are wrong) |
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Term
what happens during the last 5 degrees of knee extension in terms of rotation of the tibia? |
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Definition
-the medial condyle still moves after the lateral condyle stops
-lateral rotation of the tibia on a fixed femur |
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Term
what are the three movements of the patella? |
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Definition
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Term
what are the arthrokinematics of the patellofemoral joint? |
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Definition
-as knee flexes/extends, patella slides over interarticular groove
-max contact only 30% of total surface area |
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Term
what does the Q angle measure? |
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Definition
-it measures the net effect of the quads
the lateral pull you're getting (passive) |
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Term
normal Q angle for male and female? |
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Definition
15 degrees in women
11 degrees in men
an angle >15 means a risk of patellofemoral problems |
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Term
what are the landmarks to measure the Q angle? |
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Definition
ASIS to midpoint of patella
tibial tuberosity to midpoint of patella |
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Term
| True or False: Genu Valgum is commonly referred to as "bow legged". |
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Definition
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Term
| These quad muscles reinforce the joint capsule of the knee. |
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Definition
| Vastus medialis & Vastus lateralis |
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Term
| Arthrokinematics: closed chain knee extension (femur moving on fixed tibia) |
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Definition
| Anterior roll, posterior glide |
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