Musculoskeletal & Rheumatology
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Ottawa Knee Rule [comment memo="Note: Does not apply to children."]
[select value="false=0|TRUE=1" name="age"] <-- Age 55 years or older.
[select value="false=0|TRUE=1" name="fibula"] <-- Tenderness at the head of the fibula.
[select value="false=0|TRUE=1" name="patella"] <-- Isolated tenderness of the patella (no bone tenderness of knee other than patella).
[select value="false=0|TRUE=1" name="flex"] <-- Inability to flex knee to 90 degrees.
[select value="false=0|TRUE=1" name="walk"] <-- Inability to bear weight for four steps both immediately and in the examination room regardless of limping.
Result: [calc value="score=(age)+(fibula)+(patella)+(flex)+(walk); score>0?'X-ray required':'X-ray not necessary'" memo="Interpretation"]
[checkbox memo="display/hide references" name="footnotes" value=""][conditional field="footnotes" condition="(footnotes).is('')"]
references:
[link url="//www.aafp.org/afp/2005/0315/p1169.html" memo="#1"] Ebell, MH. Am Fam Physician. 2005 Mar 15;71(6):1169-1172.
[link url="//www.ncbi.nlm.nih.gov/pubmed/14734335" memo="#2"] Bachmann LM, Haberzeth S, Steurer J, ter Riet G. The accuracy of the Ottawa knee rule to rule out knee fractures: a systematic review. Ann Intern Med. 2004;140:121–4.
[link url="//www.ncbi.nlm.nih.gov/pubmed/8060409" memo="#3"] Seaberg DC, Jackson R. Clinical decision rule for knee radiographs. Am J Emerg Med. 1994;12:541–3.
[/conditional]
Ottawa Knee Rule Note: Does not apply to children.
<-- Age 55 years or older.
<-- Tenderness at the head of the fibula.
<-- Isolated tenderness of the patella (no bone tenderness of knee other than patella).
<-- Inability to flex knee to 90 degrees.
<-- Inability to bear weight for four steps both immediately and in the examination room regardless of limping.
Result: Interpretationscore=(age)+(fibula)+(patella)+(flex)+(walk); score>0?'X-ray required':'X-ray not necessary'
display/hide references
Result - Copy and paste this output: