Manual-lock prosthetic knee joint 3R39
single-axisfor walkingpediatric

manual-lock prosthetic knee joint
manual-lock prosthetic knee joint
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Mechanical characteristics
manual-lock, single-axis
for walking
Patient type


Knee Joint Children, Lock Item #: 3R39 Modular knee joint with lock Maximum Body Weight - 99 lbs (45 kg) Material - Aluminum Proximal Connection - Pyramid Adapter Distal Connection - Tube Clamp (22 mm diameter) Maximum Knee Flexion Angle - 145 degrees Knee Center to Proximal Connection - 16 mm Product Weight - 145 g Version - Monocentric The 3R38 Modular Single Axis Knee Joint and the 3R39 with Lock are to be used exclusively for children's prosthetic fitting of amputations of the lower limb (fig. 1).The use of these components is limited to patients up to 145 cm (4’9") tall with foot lengths up to 21 cm and weighing up to 45 kg (99 lbs).The knee axis (4) is placed 8 mm posterior to the weight bearing line and provides connection between the upper joint section (1) and the lower joint section (2) in which the extension mechanism is accom modated.The integrated lock mechanism secures the 3R39 Joint in extended posi-tion. By means of the lock cord, coming out from the upper joint section, the lock is released and flexion may take place. Ottobock | 13Connection to proximal (to the socket) is provided by means of the ad-justment pyramid (3), to distal it takes place by means of the clamp attach-ment in the lower joint section where the modular tube is inserted.
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