Ossur PRO-FLEX TERRA Gebrauchsanweisung Seite 6

2. Use the applicable adapters to connect either the socket or the knee to
the foot and establish the correct knee center height.
3. If using a prosthetic knee: Position knee according to knee alignment
instructions
4. On the lateral side of the socket, make a first mark (alignment reference
point) at the midpoint of the socket at either patellar tendon level or the
ischial tuberosity level (D). Make a second mark at the midpoint of the
socket distally (E). Draw a line through both marks.
5. Position the socket so the alignment reference line (B) goes through
the alignment reference point (D).
6. Set the correct socket angles for flexion/extension and abduction/
adduction.
7. If using a prosthetic knee: Use the applicable adapters to connect the
socket to the prosthesis.
Static Alignment
– Make sure the patient stands with equal weight on both legs.
– Check for correct prosthesis length.
– Check internal / external rotation.
– Check for correct load on toe and heel.
Dynamic Alignment
Ensure the patient is familiar with the functioning of the device.
The heel to toe action can be influenced by:
– Heel Stiffness
– Anterior-Posterior positioning of device
– Dorsi-Plantarflexion
– Shoe Characteristics
Consider the following actions if needed:
Symptoms
– Device comes to flat position too early (patient feels he/she is
sinking into a hole)
– Climbing over the toe requires extra energy
– Toe feels too stiff
– Knee hyperextends
Action
– Check Wedge instructions (if applicable)
– Shift socket anterior (or device posterior)
– Consider dorsiflexion
– Check heel of the shoe and shoe performance
Symptoms
– Rapid heel to toe movement
– Poor control over prosthesis at initial contact
– Minimal energy return feeling
– Too little push off from the toe
– Knee becomes unstable
Action
– Check Wedge instructions (if applicable)
– Shift socket posterior (or device anterior)
– Consider plantarflexion
– Check heel of the shoe and shoe performance
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