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Driver reaction times after total knee replacement

T J Spalding1, J Kiss, P Kyberd

  • 1Nuffield Orthopaedic Centre, Oxford, England, UK.

The Journal of Bone and Joint Surgery. British Volume
|September 1, 1994
PubMed
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Patients undergoing right total knee replacement (TKR) should wait at least eight weeks before driving. Reaction times and foot transfer ability after surgery significantly impact driving safety, especially for right-leg procedures.

Area of Science:

  • Orthopedics
  • Rehabilitation Medicine
  • Human Factors Engineering

Background:

  • Total knee replacement (TKR) is a common procedure impacting patient mobility.
  • Driving cessation is a critical consideration post-TKR, yet specific recovery timelines are debated.
  • Preoperative and postoperative driving reaction times require objective assessment.

Purpose of the Study:

  • To quantify driver reaction times in patients before and after total knee replacement (TKR).
  • To assess the recovery of emergency braking ability and foot transfer after TKR.
  • To establish evidence-based recommendations for driving resumption after TKR.

Main Methods:

  • 40 patients undergoing TKR were assessed for reaction times using an emergency stop test (100 N brake pressure after visual stimulus).

Related Experiment Videos

  • Assessments were conducted preoperatively and at 4, 6, 8, and 10 weeks post-TKR.
  • Patient groups included 18 drivers and 11 non-drivers, with comparisons made between groups and surgical sides.

    • Main Results:

    • Non-drivers exhibited longer reaction times compared to drivers.
    • For patients with right TKR, the ability to transfer the right foot from accelerator to brake did not return to preoperative levels until 8 weeks post-surgery.
    • Left TKR did not show a significant impact on foot transfer ability within the observed period.

    Conclusions:

    • Patients require at least an 8-week recovery period before resuming driving after right TKR.
    • Impaired reaction times and foot mobility post-TKR necessitate careful consideration for driving safety.
    • Clear guidance on driving cessation and resumption is crucial for patient safety and recovery after TKR.