The effect of anti-gravity treadmill training for knee osteo
To date, the anti-gravity treadmill (AlterG), as a representative method of Lower body positive pressure (LBPP) treadmills, has been rarely reported for knee osteoarthritis (KOA) rehabilitation. The purpose of this case study was to setup the clinical protocol example for AlterG intervention on KOA and evaluate treatment effectiveness by 3D gait analysis combined with free EMG to explore the kinematic gait parameter changes.

A 65-year-old female patient (BMI = 26, mild obesity) undergoing “more than 7 years of KOA.” The activity of the right knee joint was obviously limited and she suffered from severe pain over the past month. Due to the patient's symptoms and radiographic findings, she was diagnosed with acute attack of KOA.

The patient has performed clinical function evaluation and gait analysis combined at pretreatment, post-treatment, and 4 months follow-up assessment. AlterG training was performed 6 days/week for 2 weeks, with up to 30 min of training per session. The training protocol included two major parts, walking and squatting in AlterG.

After 2 weeks of AlterG intervention, the 10-m walking test (10 MWT) and Timed-up-and-go (TUG) test improved significantly post-treatment, whereas the Visual Analog Scale (VAS) score decreased post-treatment. The Modified Barthel Index improved post-treatment and the patient restored basic community walk after treatment. The temporal parameter results showed that stride length (%height), mean velocity (%height), and cadence gradually increased before treatment, after treatment, and at 4-month follow-up. The right range of motion (ROM) of knee flexion-extension were gradually increased. Meanwhile, the synchronized EMG data showed that the RMS (root means square) values of the rectus femoris, semitendinosus, and biceps femoris at post-treatment were improved to different degrees than at pretreatment.

Source: Medicine: May 2019 - Volume 98 - Issue 18 - p e15386

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