Adjusting The Orthosis; Checking The Orthosis' Basic Alignment; Converting Options Of The Neuro Matic System Knee Joint - FIOR & GENTZ NEURO MATIC Manual De Instrucciones

tor unit (fig. 26) for the system ankle joint.

11. Adjusting the Orthosis

The orthosis' alignment has a major effect on the orthosis' functionality and must hence be adjusted appropri-
ately.

11.1 Checking the Orthosis' Basic Alignment

On the Workbench
Regardless of the plantar flexion, automatic system knee joints require a systematic adjustment of the dorsi-
flexion stop for an optimal function of the orthosis. The dorsiflexion stop determines the moment the system
knee joint unlocks during mid stance. Furthermore, it affects the extension moment which is applied to the
orthosis and the system knee joint, respectively. This is necessary to unlock the system knee joint.
Fix the foot piece of the orthosis firmly in the patient's shoe and put the orthosis on the workbench. The dor-
siflexion stop of the system ankle joint must be adjusted in such a way that the line of gravity passes through
the middle of the femoral shell and runs vertically downwards in front of the system ankle joint and between
the ankle's pivot point and the rolling-off line.
Statically on the Patient
For checking the correct static alignment of the orthosis, the patient must wear the orthosis and stand upright
with parallel feet. When viewed from the side, the line of gravity must run from the body's centre of gravity
vertically downwards in front of the system ankle joint and between the ankle's pivot point and the rolling-off
line. The course of the line of gravity at knee height results from the individual normal posture. Wearing the
orthosis leads to deformation of soft tissue. This deformation causes the line of gravity to shift forward. Please
consider this by readjusting the dorsiflexion stop, if necessary.
If the dorsiflexion stop is adjusted correctly, a lever between forefoot and lower leg is formed (activation of the
forefoot lever) which brings the patient into a stable balance (they are able to balance themselves) and applies
the necessary knee extension moment.
Dynamically on the Patient
For checking the correct dynamic alignment of the orthosis, the patient must wear the orthosis and walk a
few steps with it. The dorsiflexion stop must be adjusted in such a way that a heel lift can clearly be seen in
terminal stance. The consequence is a lever between forefoot and lower leg which brings the patient into a
stable balance and applies the necessary knee extension moment. If the heel does not lift, you must reduce the
system ankle joint's range of motion in dorsiflexion.

12. Converting Options of the NEURO MATIC System Knee Joint

The NEURO MATIC system knee joint can be converted into a NEURO TRONIC system knee joint by exchanging
a few system components. To do so, please contact our Technical Support.
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