Flexion Stops - Otto Bock Genium X3 Setup Manual

5.4 4H101/4H102/4H104 Flexion stops
Errors in prosthesis alignment
Errors made during the alignment of the prosthesis can damage the hydraulic unit of the joint. A defective hydraulic unit
can lead to joint malfunction up to loss of function due to structural failure. This can cause the patient to fall. The hydraulic
unit may be destroyed if it comes into contact with the socket! At maximum flexion, it is essential to maintain a minimum
distance of 3 mm (1/8") between the hydraulic unit and the socket. At maximum flexion, the knee joint must be equipped
with a flexion stop if contact with the frame of the knee joint cannot be avoided (voluminous residual limbs).
When delivered, the knee joint is equipped with the 4H102 Flexion Stop, which reduces the maximum flexion angle by 15°,
thus preventing contact with the hydraulic unit. It is also possible to equip the knee joint with the smaller 4H101 Flexion Stop,
which reduces the flexion angle by 7.5° or the larger 4H104 Flexion Stop (available as a spare part), which reduces the flexion
angle by 22.5°.
If no flexion stop is desired, the knee joint can also be used without a flexion stop (the screws
are removed together with the flexion stop). In this case, it must be ensured that the socket
and the hydraulic unit do not collide.
To switch to the smaller 4H101 Flexion Stop
1 Loosen the screws with the included TORX T10 bit (Fig. 1).
2 Remove the 4H102 Flexion Stop and insert the 4H101Flexion Stop (Fig. 2).
3 C lean the thread with a brush. Apply Loctite® 243 to the thread and tighten the
screws (TORX T10) with a torque wrench to 0.6 Nm.
Use the same procedure when switching to the larger 4H104 Flexion Stop.
16 Ottobock | Genium X3 Set-up Guide
4H102, 15°
1
4H101, 7.5°
2
4H104, 22.5°