Stumble control
The approach of microprocessor-controlled knee systems to maintaining balance in response to sudden changes detected during walking.
What is stumble control?
Stumble control is a function in microprocessor-controlled knee systems that describes how the knee responds when an unexpected strain is detected during walking. The aim is to help the person maintain balance by having the knee provide suitable resistance at a moment of sudden imbalance.
This function is based on the principle of sensors continuously monitoring the gait and the control unit adapting the knee's behavior according to the detected change. The contribution stumble control makes for a person varies individually; it is always considered together with the assessment carried out by the specialist physician and team.
Stumble control step by step
Continuous sensing
Sensors continuously monitor walking speed, angle and load to assess which phase the knee is in.
Detecting an unexpected situation
When a sudden strain or unexpected movement is detected during walking, the system tries to distinguish it from normal walking.
Adapting the resistance
The control unit aims to help the person maintain balance by increasing the knee's resistance according to the detected situation.
Returning to walking
Once balance is restored, the system aims to return to normal walking behavior.
Example situations in daily life
The situations below introduce the general function of stumble control; the contribution it makes for each person is assessed individually.
Walking outside the home
In situations such as curb edges, thresholds or uneven ground, the knee's response to a sudden change may help maintain balance.
Varied terrain
The knee's adaptation to unexpected changes in the ground on sloped and uneven terrain is intended to support safe movement.
Gait training
Gait training after fitting is important for making effective use of the system; this training supports a sense of confidence in stumbling situations.
Part of safe use
Stumble control is not a stand-alone function but a supporting function within the system as a whole. Effective results are aimed for through correct adaptation of the system to the person, regular maintenance and the person completing gait training.
For whom and how this function is to be considered is determined by the specialist physician and team, taking into account the person's activity level, safety needs and general health.
- The function becomes meaningful together with the adaptation of the system to the person.
- Regular maintenance and check-ups contribute to safe use.
- Gait training supports the ability to maintain balance.
Frequently asked questions
Does stumble control completely prevent falls?
No. Stumble control is a supporting function aimed at maintaining balance at a moment of sudden imbalance; the result varies from person to person and it does not provide a guarantee on its own. Safe use is considered together with suitable adaptation and gait training.
For whom is this function considered?
Suitability is assessed individually by the specialist physician and team, taking into account the person's amputation level, activity level, safety needs and general health.
Do mechanical knees also have stumble control?
Since this function requires sensors and a control unit that continuously sense the gait, it is associated with microprocessor-controlled knee systems; mechanical knees manage resistance through settings made in advance.
This content is for informational purposes; consult your physician for diagnosis and treatment. Fittings are carried out at our licensed center addresses in line with a specialist physician's prescription/medical report.
