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Preoperative Patient-Reported Outcome Measures Relationship With Postoperative Outcomes in Flexible Adult-Acquired
Matthew S Conti1, Kristin C Caolo1, Joseph T Nguyen2
1Foot and Ankle Service, Hospital for Special Surgery, New York, NY, USA.
Background:
Previous studies have demonstrated that procedure-specific thresholds using preoperative patient-reported outcome scores may be used to predict postoperative outcomes. The primary purpose of this study was to determine if preoperative Patient-Reported Outcomes Measurement Information System (PROMIS) thresholds could be used to predict which patients would clinically improve at 2 years postoperatively following reconstruction of their flexible adult-acquired flatfoot deformity (AAFD).
Methods:
PROMIS physical function, pain interference, and depression scores were prospectively collected preoperatively and at a minimum of 2 years postoperatively for 75 feet with flexible AAFD. Minimal clinically important differences (MCIDs) were calculated to establish significant postoperative improvement. Receiver operating characteristic curves and area under the curve analyses were employed to determine whether preoperative PROMIS scores could be used to predict postoperative outcomes.
Results:
The PROMIS physical function receiver operating characteristic curve analysis (area under the curve = 0.913, P < .001) found that a preoperative PROMIS physical function score greater than 45.7 resulted in a 14.3% probability of achieving the MCID, whereas a preoperative score of less than 40.8 had a 97.7% probability of achieving the MCID. A preoperative PROMIS pain interference score (area under the curve = 0.799, P < .001) less than 54.1 had only a 23.1% probability of achieving the MCID at 2 years postoperatively.
Conclusions:
Preoperative PROMIS physical function and pain interference scores could be used to predict postoperative improvement in patients with flexible AAFD. These results may help surgeons counsel patients regarding the anticipated benefit of surgery.
Level Of Evidence:
Level III, retrospective comparative series.
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