RT Journal A1 Smith, Matthew V. A1 Klein, Sandra E. A1 Clohisy, John C. A1 Baca, Geneva R. A1 Brophy, Robert H. A1 Wright, Rick W. T1 Lower Extremity-Specific Measures of Disability and Outcomes in Orthopaedic Surgery JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2012 FD March 7 VO 94 IS 5 SP 468 OP 477 DO 10.2106/JBJS.J.01822 UL http://dx.doi.org/10.2106/JBJS.J.01822 AB Outcome measures may be simple questions or complex measures that assess multiple interrelated domains affecting treatment outcomes.Outcome measures should be relevant to patients, easy to use, reliable, valid, and responsive to clinical changes.Joint and disease-specific outcome measures have been developed for the hip, knee, and foot and ankle. Many of these measures would benefit from further research into their validity, reliability, and optimal applicability.General health measures and activity level scores should be included in outcome assessments after treatment for orthopaedic conditions.