Otto Bock Pheon 3R62 Instructions For Use Manual page 24

1.1 Construction and Function
The 3R62* Prosthetic Knee Joint is a polycentric prosthetic knee joint. It is available in the follow­
ing versions:
• 3R62, 3R62=1 (with proximal pyramid adapter; in combination with an approved tube clamp
adapter for hip disarticulation)
• 3R62=KD, 3R62=1-KD (with proximal lamination anchor for knee disarticulation)
• 3R62=ST, 3R62=1-ST (with proximal threaded connector for prosthetic fittings for long resid­
ual limbs)
The maximum flexion angle of the prosthetic knee joint is 155°.
In conjunction with the polycentric joint kinematics, the EBS (ergonomically balanced stride) fea­
ture secures the stance phase. At heel strike, prosthetic knee joint flexion is cushioned in the
range from 0° to approx. 10° by an adjustable spring damping element and stance phase exten­
sion is dampened. The EBS is adjusted to the user's body weight and activity level with the help
of the adjusting wheel
In the swing phase, the spring action of the extension assist prevents the prosthetic foot from
swinging too far posterior during flexion. The spring action of the extension assist helps the
patient achieve full extension. The extension assist is adjusted with the help of the adjusting wheel
(see fig. 12).
The swing phase is also influenced by an integrated friction brake, which prevents a hard exten­
sion stop in particular. The braking effect is adjusted by means of the adjusting screw
fig. 14).
The upper joint section
and the posterior link
tion is located above the joint and behind the load line, thus providing knee stability in the
stance phase (see fig. 2).
When the lock is activated, flexion of the prosthetic knee joint is prevented. Permanent deactiva­
tion of the lock by means of the screw
activated by removing the screw.
In order to allow the patient to deactivate the lock at will (e.g. to sit down), the release cable for
the lock has to be installed on the prosthesis. By default, the lock slide
ary deactivation. When the lock slide is pulled
lock slide can also be locked in this position
ated automatically when the prosthetic knee joint is fully extended (see fig. 7).
The distal portion of the prosthetic knee joint is fabricated as a tube clamp and accommodates
the tube adapter.
1.2 Combination Possibilities
INFORMATION
When fabricating a prosthesis for the lower limbs, all of the prosthetic components used have to
meet the requirements in regard to the patient's body weight and activity level.
Prosthetic components that are especially well suited for combination with the product are listed
below.
Designation
Screw adapter (with hip disarticulation or hemipel­
vectomy)
Tube Adapter
Foam Cover
24 | Ottobock
(see fig. 10).
and lower joint section
to form a four-bar linkage. In extension, the instantaneous centre of rota­
is the factory default setting (see fig. 6). The lock is
are connected by the two anterior links
, the lock is deactivated. With adjustment
. When the lock slide is released, the lock is activ­
Reference number
4R156* (up to 150 kg)
4R56* (up to 100 kg)
2R49
3S107 (for 3R62
3R62=1, if needed also 3R62=KD, 3R62=1-KD)
3R27* (for hip disarticulation)
6R6 (for 3R62=KD, 3R62=1-KD)
is designed for tempor­
and 3R62=ST, 3R62=1-ST,
(see
, the