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Q What is the accuracy of clinical decision rules (CDR), physical examination (PE), and imaging procedures (eg, magnetic resonance imaging [MRI]) for detecting causes of acute knee pain?
Clinical impact ratings GP/FP/Primary care ★★★★★☆☆ Emergency medicine ★★★★★☆☆
Medline (1966 to October 2002) and bibliographies of relevant articles.
Study selection and analysis:
peer reviewed studies that evaluated CDR for fractures of the knee, or compared PE and MRI with arthroscopy (reference standard) for detecting meniscal and ligamentous knee damage.
sensitivity and specificity, and negative and positive likelihood ratios.
(1) CDR for ruling out knee fractures. Of the 4 CDR evaluated (1 study each), the Ottawa knee rules had the most thorough validation (sensitivity 100%, 95% CI 94 to 100; specificity 49%, …