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Product name : Four-Axis Knee Joint
Product No. : 4P20
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4P20 Four-Axis Knee Joint
![]() Item No.: 4P20 Recommendation: • For trans-femoral amputees • With moderate functional levels • Medium stance phase stability • Medium swing phase control • Suitable also for hip disarticulation amputees • Not suitable for amputees with higher functional levels Description: Upper and lower joint section are connected with linkage bars. The stance phase stability is achieved with the polycentric kinematic (Adjustment of the instant center of rotation by adjustment of the stop). The Stepless adjustment of the axis friction and of the extension assist spring controls the swing phase. Technical Data: • Knee flexion range: approx. 120° • Height (knee center - upper edge): 37 mm Technical Data:
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