To determine isokinetic strength of the knee extensors of the injured and uninjured leg at 90 and 180 deg/s, along with functional tests of proprioception, were assessed at baseline and at 6 weeks, 12 weeks, and 6 months postoperatively:
■ Control – Standard rehabilitation program plus at-home volitional exercise program
■ Polystim – Standard rehabilitation program plus conventional NMES product superimposed on isometric volitional contractions during 20-minute sessions, 3 times a day, 5 days a week, for 12 weeks
■ Kneehab XP – Standard rehabilitation program plus Kneehab XP superimposed on isometric volitional contractions during 20-minute sessions, 3 times a day, 5 days a week, for 12 weeks
||Injured Leg: At 12 weeks post-op, Kneehab XP patients gained 10% strength improvement over baseline, while the other 2 groups averaged 15% strength loss.
Uninjured Leg: Kneehab XP patients exceeded strength of their uninjured leg at 12 weeks (+3%) and continued gains (+13%) at 6 months post-op. Neither the Control or Polystim groups achieved these milestones.
|Patients in the Kneehab XP group achieved consistently better results for functional performance measures at all time points.|
|Kneehab XP patients were 15% more compliant than Polystim patients with their at-home therapy.|
■ The Kneehab XP group demonstrated less of a strength deficit compared to the other groups at the 6-week follow-up point, concluding that NMES in the early stages of rehabilitation help build capacity.
■ The convenience of use with Kneehab XP may account for improved patient therapy compliance.
■ Intensive garment-integrated stimulation combined with standard rehabilitation is effective at accelerating recovery after knee surgery.