The symptom that the feet stick to the ground during walking and cannot move forward is called "freezing feet", which is a characteristic gait disorder seen in Parkinson's disease patients.In recent years, it has been reported that Parkinson's disease patients with freezing feet are more likely to fall forward, but no objective verification has been performed on anterior instability during walking.
Hideyuki Urakami and Associate Professor Yohei Okada of the Master's Program at Kio University have now verified the anterior instability of Parkinson's disease patients with freezing legs by gait analysis using a three-dimensional motion analysis device.As a result, it was found that the COM-BOS distance (distance from the center of body mass to the bottom of the support base when the heel touches the ground), which is an index of the risk of falling forward, is low in Parkinson's disease patients with freezing feet. ..The Margin of Stability (MOS), which is also an index of anterior instability of walking, was also lower in Parkinson's disease patients with freezing feet than in Parkinson's disease patients without freezing feet. Both COM-BOS distance and MOS are interpreted as being unstable forward as the value is lower.
Furthermore, in Parkinson's disease patients with freezing feet, it was found that a decrease in stride length leads to a decrease in COM-BOS distance, and an increase in walking rate (steps / minute) leads to a decrease in MOS.That is, it is considered that a decrease in stride length increases the risk of falling forward, and an increase in walking rate reduces forward instability.
In this study, patients with Parkinson's disease with freezing feet have a higher risk of anterior imbalance during walking than patients with Parkinson's disease without freezing feet, and in addition to being dynamically unstable, their anterior anxiety. It was clarified that qualitativeness is associated with a decrease in stride length and an increase in walking rhythm.
Since it is said that there are two types of anterior instability during walking in Parkinson's disease patients, one is due to freezing legs and the other is due to forward bending posture. It also plans to verify forward instability.
Paper information:[Neuroscience Research] Forward gait instability in patients with Parkinson's disease with freezing of gait
