Wearable activity sensors and early pain after total joint arthroplasty

Joseph T. Patterson, Hao Hua Wu, Christopher C. Chung, Ilya Bendich, Jeffrey J. Barry, Stefano A. Bini

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


A prospective observational cohort of 20 primary total hip arthroplasty (n = 12) and total knee arthroplasty (n = 8) patients (mean age: 63 ± 6 years) was passively monitored with a consumer-level wearable activity sensor before and 6 weeks after surgery. Patients were clustered by minimal change or decreased activity using sensor data. Decreased postoperative activity was associated with greater pain reduction (−5.5 vs −2.0, P = .03). All patients surpassed minimal clinical benefit thresholds of total joint arthroplasty (TJA) (Hip Disability and Osteoarthritis Score Junior 30.5 vs 20.8, P = .23; Knee Injury and Osteoarthritis Outcome Score Junior 23.3 vs 18.2, P = .77) within 6 weeks. Patients who objectively “take it easy” after TJA may experience less pain with no difference in early subjective outcome. Remote, passive analysis of outpatient wearable sensor data may permit real-time detection of early problems after TJA.

Original languageEnglish
Pages (from-to)68-70
Number of pages3
JournalArthroplasty Today
Issue number1
StatePublished - Mar 2020


  • Activity tracking
  • Hip arthroplasty
  • Knee arthroplasty
  • Pain
  • Sensors
  • Wearable


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