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Anatomy · Lower limb: oblique popliteal ligament
Sample itemWhich structure forms an expansion across the back of the knee joint capsule and prevents hyperextension, arising from the insertion of semimembranosus?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Oblique popliteal ligament
The oblique popliteal ligament is an expansion of the semimembranosus tendon that runs obliquely upwards and laterally over the back of the capsule, reinforcing it and resisting hyperextension.
Option by option
A. Oblique popliteal ligament (correct)
Correct. This expansion of semimembranosus reinforces the posterior capsule.
B. Patellar ligament
This ligament is the continuation of the quadriceps tendon at the front of the knee.
C. Arcuate popliteal ligament
This ligament arises from the fibular head and arches over popliteus; it is a separate posterior structure.
D. Fibular collateral ligament
This cord on the lateral side resists varus stress and is not an expansion of semimembranosus.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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