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Emergency Medicine · Orthopedics

Ottawa Shoulder Rule calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Result

0

Ottawa shoulder rule negative

Interpret only within the cited source population and criteria; use alongside complete clinical assessment.

Formula inputs

  • age ge 40
  • traumatic mechanism
  • tender mid clavicle
  • tender proximal humerus
  • tender scapula
  • deformity or dislocation

Primary source

Stiell IG et al. The validation of the Ottawa shoulder rules. J Emerg Med. DOI: 10.1016/j.jemermed.2009.10.004. PMID: 20045660. Scope: shoulder radiography indicated (1) when traumatic mechanism is present and any of age ≥40, mid-clavicle tenderness, proximal humerus tenderness, scapula tenderness, or deformity/dislocation is present. (2010)

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