Otto Bock 4R212 Instructions For Use Manual page 23

2) CAUTION! When hopping, do not bend the knee too far so that the
proximal end of the prosthetic foot does not contact and injure the
thigh.
Have the patient hop on both legs between parallel bars.
3) Check the level pelvis position.
4) If required, adapt the foot length according to the section "Shifting the
Prosthetic Foot" (see Page 23) to achieve the level pelvis position.
5) If the stiffness of the prosthetic foot is not optimal, replace the prosthetic
foot with one of different stiffness and once again check the level pelvis
position while hopping.
5.4.1.1 Shifting the Prosthetic Foot
Required tools and materials:
>
710D4 torque wrench
1) Loosen the 4 set screws.
2) Shift the prosthetic foot in the required direction in the test adapter.
3) Secure the prosthetic foot in the test adapter by tightening the 4 set
screws (see fig. 3) (mounting torque: 15 Nm).
5.4.2 Exercises
► Perform the exercises described in the 647H545 Quick Reference Guide
(section "Exercises" – see page 11).
5.4.3 Dynamic Optimisation
For the dynamic optimisation of the sport prosthesis, it is important that the
prosthetic foot is set to the following values:
External foot rotation: 0°
•
Foot flexion in m–l direction: 0°
•
The objective of dynamic optimisation is to optimally adapt the positioning of
the prosthetic foot to the gait patterns of the patient. The following adjust­
ment possibilities are used here:
• Posterior or anterior placement of the prosthetic foot in the a – p direc­
tion
• Shifting the Prosthetic Foot in the Test Adapter
Adjustment possibility of
the prosthetic foot
Posterior placement of the
prosthetic foot
Anterior placement of the
prosthetic foot
Effect
Increasing springiness to
the front
Reducing springiness to
the front
Application
When the patient has the
feeling of being slowed
down, or wants a more
sporty gait.
23