In January 2015, the London Orthotic Consultancy (LOC) opened its Video Vector Gait Laboratory, at its headquarters clinic in Kingston-upon-Thames.
A Video Vector Gait Laboratory uses sophisticated cameras that synchronise with a force measurement plate.
The force plate is a highly sensitive measurement device, set within the floor that measures the force being applied to it during walking. It measures force as 3 components allowing a vector or graphical representation of the force to be projected onto an image from the camera.
The result is that we can accurately see where the vector is located, in particular its direction and where it is in relation to the joints in the stance leg.
Understanding where the force is positioned in relation to the leg is essential for accurate fine tuning of the lower limb orthotics that we prescribe.
For example, if the vector is positioned too far in front of the knee at late mid-stance, there will be a hyper extension force applied to the knee. The aim of our work within the Gait Laboratory will be to produce prescriptions that are designed to:
- protect the bones and joints of the lower leg;
- maintain the range of movement of the hip, knee and ankle;
- return the gait to as normal pattern as possible.
The two images above show the before and after effect of orthotics as measured using our Video Vector Gait Lab.
The left image shows an incorrectly positioned vector anterior to the knee which is causing a hyperextension force on the knee. The shank is aligned too vertically at this phase of the gait cycle.
After fitting of an Ankle Foot Orthotic (AFO) the vector is now correctly aligned relative to the foot, knee and hip as shown in the image on the right. The AFO has brought the lower limb into a correct alignment and at midstance the shank is correctly positioned at 10 degrees to the vertical.
Gait Laboratory Fees
The following fees apply if patients decide to make use of the additional analysis provided by our Gait Lab.
|Video vector Assessment
|Video vector fine tuning of the orthotic prescription
To make a Gait Laboratory appointment contact LOC