The Potential of Accelerometers in the Evaluation of Stability of Total Knee Arthroplasty

Humera Khan, Peter S. Walker, Joseph D. Zuckerman, James Slover, Fredrick Jaffe, Raj J. Karia, Joo H. Kim

Research output: Contribution to journalArticlepeer-review


An accelerometer attached to the anterior proximal tibia was investigated as an evaluation of knee stability of Total Knee Arthroplasty (TKA) patients while performing daily activities. Acceleration data of 38 TKA knees with a minimum follow up of 6. months were compared with 34 control knees. The activities performed were: walking three steps forward and coming to a sudden stop; turning in the direction of non-tested knee; sit-to-stand; and stepping up and down from a 7 inch step. The acceleration results showed significant differences between TKA and controls while stepping down and while turning in the non-tested knee direction. The higher accelerations with the TKA group may have represented an objective measure of stability, even if this was not directly discernible to the patient.

Original languageEnglish (US)
Pages (from-to)459-462
Number of pages4
JournalJournal of Arthroplasty
Issue number3
StatePublished - Mar 2013


  • Accelerometer
  • Instability
  • Rehabilitation
  • TKA Clinical Evaluation
  • Total knee arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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