Össur Mauch Knee Plus Instrucciones De Uso página 6

• Establish the correct length of the prosthesis.
NOTES:
• The pyramid is shifted 6mm in an anterior direction from the knee
axis.
• If the weight line is too far anterior to the knee axis, the knee may
require more effort to create a hyperextension moment that will
disengage the stance control and allow for fluid initiation of the knee
flexion.
• Premature knee flexion may result from a weight line position too
posterior to the knee axis.
SWING PHASE
The Mauch system is designed to provide variable hydraulic resistance
to flexion and extension during swing phase based on changes in the
user's walking speed. The resistance settings can be adjusted by rotating
the cap atop the control cylinder.
FLEXION RESISTANCE: (Figure C)
Turn the cap relative to the indicator mark for flexion.
Extreme left arrow indicates minimum resistance Arrow at "A" indicates
medium resistance Extreme right arrow indicates maximum resistance
EXTENSION RESISTANCE: (Figure D)
Turn the cap to either extreme to move the indicator mark.
• 1 is minimum resistance
• 5–6 is medium resistance
• 10 is maximum resistance
STANCE PHASE: (Figure E)
The Mauch stance control system is designed to provide hydraulic yielding
resistance to knee flexion when the prosthesis is loaded. This assists the
user in descending stairs foot over foot and in stumble recovery. The
stance resistance or yielding rate can be adjusted using the screw near the
U-Lever on the piston rod.
• Full clockwise rotation sets the minimum yielding rate (maximum
stance resistance).
• One-third rotation counterclockwise sets the maximum yield rate
(minimum stance resistance). do not exceed one-third rotation.
SPECIALIZED MODES OF OPERATION
U-Lever (Mode Selector Switch): (Figure F)
The Mauch system is designed to provide the user with a manual lock
and a Swing Only mode of operation. These functions are engaged and
disengaged through the U-Lever or mode selection switch located near
the top of the piston rod. The manual lock may be useful when the user
requires additional safety. Swing Only mode is useful during rowing,
running, or cycling activities.
• Manual Lock or Swing Only mode engaged. U-Lever in up position.
• Manual Lock or Swing Only mode disengaged. U-Lever in down
position.
PROCEDURE FOR ENGAGING SWING ONLY MODE: (Figure G)
• Hyperextend the knee
• Raise the U-Lever
• Stance resistance is eliminated
PROCEDURE FOR ENGAGING MANUAL LOCK: (Figure H)
• DO NOT hyperextend
• Raise the U-Lever
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