The SANE score provides a "patient-anchored" percentage of normal, reflecting their overall perception of recovery and function.
"How would you rate your [affected joint] today as a percentage of normal, where 0% is completely abnormal and 100% is normal?"
Despite its simplicity, SANE correlates strongly (r = 0.70 to 0.85) with more complex shoulder and knee outcome measures.
Williams GN, et al.
The single assessment numeric evaluation (SANE) for hip, knee, and ankle outcomes: a systematic review.
