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Review Question - QID 7373

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QID 7373 (Type "7373" in App Search)
Kinematic testing of patellofemoral motion demonstrates that malalignment that produces increased Q angle causes a shift of the patella laterally in the trochlear groove and is most pronounced during what phase of the flexion arc?

0 to 15 degrees

17%

58/342

20 to 30 degrees

33%

114/342

40 to 90 degrees

40%

137/342

100 to 120 degrees

6%

22/342

130 to 140 degrees

2%

8/342

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Dynamic patellofemoral joint contact measurements on cadaveric knees with simulated increased Q angle demonstrated that forces shifted to the lateral facet. The lateral shift in the patella was most pronounced from 40 to 90 degrees of flexion. At lower degrees of flexion, the lateral shift was significantly less. At higher degrees of flexion, the continued shift of the patella was not as pronounced.

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