Due to its construction, the brake mechanism does not wear down and is functionally reliable, so
that readjusting the braking effect later is generally not necessary.
Swing phase control
The 3R93 Knee Joint has a mechanically controlled swing phase. To initiate the swing phase
the prosthesis wearer relieves the load on the prosthesis to cause the brake to turn off. The in-
tegrated, adjustable spring extension assist (Fig. 2, item B) controls the pendulum movement of
the prosthetic lower leg.
2.6 Combination possibilities
INFORMATION
In a prosthesis, all prosthetic components have to meet the patient's requirements regarding the
amputation level, body weight, activity level, environmental conditions and field of application.
3 Technical data
Proximal connection
Distal connection
Max. knee flexion angle (Fig. 3)
Weight
System height
Proximal system height up to alignment reference point
Distal system height up to alignment reference point
Max. user weight
Mobility grade according to MOBIS
4 Handling
4.1 Alignment
CAUTION
Risk of falling as a result of incorrect alignment. Errors during the alignment of the prosthesis
can lead to malfunction of the joint up to loss of functionality due to structural failure. This can
cause the patient to fall. Observe the alignment instructions.
The advantages of the 3R93 can only be made optimal use of in case of a correct alignment.
The optimal residual limb position must be anticipated when positioning the socket connector
(Fig. 8). Plumb lines in the frontal and sagittal planes, drawn from the hip joint centre of rotation
and marked while taking the plaster cast and during trial fitting of the test socket, will facilitate
correct positioning of the lamination anchor or socket adapter.
To align the prosthesis please proceed in two steps:
First make the bench alignment using an alignment tool such as 743L200 L.A.S.A.R. Assembly or
743A200 PROS.A. Assembly. For subsequent static alignment optimization, please use 743L100
L.A.S.A.R. Posture.
22 | Ottobock
Pyramid adapter
Tube clamp, 34 mm Ø
130°
760 g
82 mm
8 mm
74 mm
125 kg
1, 2
3R93