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Review Question - QID 7324

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QID 7324 (Type "7324" in App Search)
An 18-year-old woman injures her left knee playing soccer. At the time of anterior cruciate ligament (ACL) reconstruction, she was noted to have an irreparable posterior horn medial meniscus tear. Partial meniscectomy will have what primary effect?

Increase medial femoral-tibial peak contact loads

74%

559/756

Increase medial compartment contact area

14%

108/756

Decrease in situ forces in the ACL graft

4%

27/756

Decrease anterior tibial translation

1%

9/756

Increase posterior tibial translation

6%

44/756

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The medial meniscus distributes force through the medial compartment. Peak loads in the affected compartment are increased by partial and complete meniscectomy. The posterior horn of the medial meniscus is also an important secondary restraint to anterior tibial translation in the ACL-deficient knee. In situ forces in the reconstructed ACL are increased with loss of the posterior horn of the medial meniscus.

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