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Summary

Robot-assisted gait therapy using the Lokomat® system is feasible and safe for patients after open heart surgery. This robotic therapy showed comparable improvements in walking distance and muscle strength to standard physiotherapy.

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Area of Science:

  • Rehabilitation Medicine
  • Robotics in Healthcare
  • Cardiovascular Surgery Recovery

Background:

  • Assessing the feasibility and safety of robot-assisted gait therapy with the Lokomat® system in patients early after open heart surgery.
  • Investigating early postoperative rehabilitation interventions to improve patient outcomes.

Purpose of the Study:

  • To evaluate the safety and efficacy of robot-assisted gait therapy (Lokomat®) in patients undergoing open heart surgery.
  • To compare robot-assisted therapy outcomes with standard physiotherapy in the early postoperative phase.

Main Methods:

  • A study involving 10 patients receiving robot-assisted Lokomat® training (Intervention group) and 20 patients receiving standard physiotherapy (Control group) within days after open heart surgery.
  • Assessed walking distance via the six-minute walk test and lower limb muscle strength via quadriceps peak force.
  • Monitored for device-related wound healing disturbances as the primary safety endpoint, with a one-month clinical follow-up.

Main Results:

  • Both groups showed significant improvements in walking distance and quadriceps peak force.
  • Robot-assisted training outcomes were comparable to standard physiotherapy in terms of median changes in walking distance and quadriceps peak force.
  • No deep sternal wound infections or adverse events were reported in the robot-assisted training group.

Conclusions:

  • Robot-assisted gait therapy with the Lokomat® system is a feasible and safe intervention for patients early after median sternotomy.
  • The effectiveness of robot-assisted training is comparable to standard in-hospital physiotherapy for improving walking distance and lower limb strength.
  • An adapted, combined aerobic and resistance training with augmented feedback may further enhance benefits in gait and muscle strength.