CAUTION
Self‑discharge of the battery. When the joint is not in use for an extended period of time, self-discharge of
the battery will result. This can lead to insufficient power supply to the electronics of the joint and result in
undefined conditions. This can cause you to fall.
We therefore recommend recharging prior to every use.
Prior to using the C-Leg in the 2nd / 3rd mode (e.g. bike riding), check the battery status. To do so, attach
the charger to the C-Leg. The yellow LED should flash (battery is charged more than a half) or should not
be lit (battery is fully charged). Using the C-Leg in the 2nd/3rd mode with insufficient battery capacity may
cause the joint to switch into the empty battery mode (see Section "Important User Instructions").
CAUTION
Malfunction of the joint. Malfunctions of the joint can cause the prosthesis wearer to fall.
Pay attention to the vibration and sound warnings (beeps) of the C-Leg.
CAUTION
Improper switching between modes. An incorrect switch from the 2nd/3rd mode into the 1st mode creates
the risk of falling (see Section "Switching between 1st, 2nd and 3rd modes")!
When switching between modes, concentrate on the switching procedure and on the subsequent beep and
vibration signals, which confirm that the correct change has been made.
INFORMATION
If you have been using forearm crutches or a cane during the C-Leg fitting, you will generally become more
active within a short time. For that reason it is important that the settings are checked and possibly read-
justed. A readjustment of the C-Leg settings by your prosthetist is also required if you switch from forearm
crutches to a cane or to no walking aid at all.
CAUTION
Results of product deterioration. Wear and tear on system components can lead to malfunction of the
joint. This can cause you to fall.
For your own safety, comply with the specified service and inspection intervals (maintenance of operational
safety and guaranty). Your prosthetist is the contact person.
CAUTION
Incorrect battery charging. Charging the battery with battery chargers that have not been approved by
Otto Bock can lead to defects and result in malfunction of the joint. This can cause you to fall.
Only use battery chargers approved by Otto Bock for charging the battery of the C-Leg (also refer to Section
"Charging the C-Leg Knee Joint System).
CAUTION
Improper use of the remote control. The remote control can get damaged by improper use. This can
lead to malfunction of the remote control and result in unexpected actions of the joint. This can cause you
to fall. For information regarding the proper use of the remote control refer to Section "Switching between
1st and 2nd/3rd Mode".
24 | Ottobock
C‑Leg