Muscle activation pattern and gait biomechanics after total knee replacement

M. G. Benedetti, F. Catani, T. W. Bilotta, M. Marcacci, E. Mariani, S. Giannini

Research output: Contribution to journalArticlepeer-review


Objective. The aim of this study is to evaluate residual muscle function abnormalities after total knee replacement, with respect to gait kinematics and kinetics. Design. Longitudinal study on a follow-up of up to two years. Background. Gait usually presents an excellent improvement after total knee replacement. Nevertheless, some kinematics and kinetics abnormalities persist even after a long period of time and they might have implications in long-term prosthesis failure. Additionally, lower limb muscle activity has not been sufficiently studied in the past directly by means of dynamic EMG. Methods. Nine patients who had a posterior cruciate sparing total knee replacement design were evaluated by means of clinical assessment and gait analysis at the end of rehabilitation trials at six, twelve and twenty four months. EMG from trunk and lower limb muscles was registered and elaborated through a statistical detector for the on-off timing. Results. Gait analysis showed a slow gait, with a "stiff knee gait pattern" and prolonged muscular co-contractions during stance. Conclusions. Knee kinematics and kinetics abnormalities during loading acceptance after total knee replacement are associated with co-contractions in muscular activation pattern.

Original languageEnglish
Pages (from-to)871-876
Number of pages6
JournalClinical Biomechanics
Issue number9
Publication statusPublished - Nov 2003


  • Dynamic EMG
  • Gait analysis
  • On-off detection
  • Rehabilitation
  • Total knee prosthesis

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Fingerprint Dive into the research topics of 'Muscle activation pattern and gait biomechanics after total knee replacement'. Together they form a unique fingerprint.

Cite this