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Editorial commentary discusses the limitations of the external rotation recurvatum test for diagnosing knee ligament injuries, suggesting alternative evaluations.
For over half a century, the external rotation recurvatum test has been taught and used by orthopaedic surgeons to evaluate the ligamentous integrity of the knee. Sequential cutting studies have now determined that posterolateral ligament injuries alone will not result in a positive test. A combination of knee exams is needed to evaluate the integrity of the tissues associated with stability to hyperextension, external tibial rotation, and varus rotation.
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Mark G. Siegel (2026) studied this question.
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