Blatchford PDAC Approved Products »

Child’s 4-Bar Knee

Suitable for outdoor use
Activity Level 1 2 3 4

Featuring a polycentric design for stability during stance and an adjustable extension assist spring to provide swing control, the Child’s 4-bar Knee is a durable and lightweight paediatric knee designed for active children.

Available with a choice of proximal adapters including a Standard Socket Alignment Kit allowing for A-P shift, rotation and flexion, extension, adduction and abduction. A Lamination Socket Adapter Kit allows for A-P shift and is ideal where a minimal build height is required. All alignment adjustments can be made using the easily accessed single bolt.

The knee comes complete with a 25mm lightweight carbon fibre tube and 3 different extension springs for optimal fitting.

Key Features

  • Polycentric knee for stance stability
  • Adjustable extension assist spring
  • Wide range of alignment
  • Low build height

Child’s 4-Bar Knee Technical Data

Max. User Weight:


Activity Level:


Component Weight:


Build Height:



Proximal Adapters

Child’s TF alignment kit 189226
Lamination Socket Alignment Kit 189126
M30 Laminate Adapter 4 Prong Kit 189626
M30 Childs Adapter Kit 189726
Female Mini Pyramid Pylon Kit 25mm 409099



Part Number: 

Child’s 4-bar Knee with 330mm tube 019245
Child’s 4-bar Knee without tube 239133

Child’s 4-Bar Knee Documentation

Product Information

Technical Guides

Regulatory Information