The Modified 5-Item Frailty Index is a Predictor of Perioperative Complications in Digital Replantation

Thor S Stead1, Neel Vishwanath2, Nikhil Sobti2

  • 1Department of Anesthesiology, New York-Presbyterian/Weill Cornell Medical Center, New York City, USA.

Hand (New York, N.Y.)
|September 18, 2025
PubMed
Abstract

Insights

The modified frailty index 5 (mFI-5) effectively predicts complications after digit replantation, including reoperation. Higher mFI-5 scores indicate increased risk, aiding in patient counseling and surgical planning.

Area of Science:

  • Reconstructive surgery
  • Surgical outcomes research
  • Patient risk stratification

Background:

  • Digit replantation carries a significant risk of postoperative complications, with reoperation rates estimated around 14%.
  • Accurate prediction of these complications is crucial for patient management and surgical planning.
  • The modified frailty index 5 (mFI-5) is a potential tool for assessing patient risk.

Purpose of the Study:

  • To evaluate the efficacy of the modified frailty index 5 (mFI-5) in predicting postoperative complications, including reoperation, following digit replantation.
  • To identify associations between mFI-5 scores and adverse outcomes in patients undergoing digit replantation.

Main Methods:

  • Utilized the American College of Surgeons' National Surgical Quality Improvement Program database (2007-2019).
  • Identified 1336 patients who underwent digit replantation.
  • Analyzed demographics, patient characteristics, mFI-5 scores, and complications (reoperation, readmission) using univariate and multivariate analyses.

Main Results:

  • Patients with mFI-5 ≥ 3 (frail) had significantly higher rates of all-cause complications (51.5% vs 9.2%), readmission (15.8% vs 2.2%), and reoperation (8.8% vs 3.1%) compared to those with mFI-5 = 0.
  • Multivariate analysis showed mFI-5 ≥ 3 significantly increased odds of any complication (OR=9.1), mortality (OR=5.4), surgical complications (OR=7.5), and medical complications (OR=13.4).
  • Frail patients had lower odds of home discharge (OR=0.35) and higher odds of unplanned readmission (OR=1.4).

Conclusions:

  • The mFI-5 is a simple, effective tool for predicting adverse outcomes in digit replantation.
  • Preoperative calculation of mFI-5 aids in risk stratification, patient counseling, and operative planning.
  • Utilizing mFI-5 can help optimize perioperative care and improve postoperative outcomes for digit replantation patients.