Description And Intended Purpose - Blatchford Child's 4-Bar Knee Instructions D'utilisation

1 Description and Intended Purpose

These Instructions for Use are intended for use by the practitioner and user unless otherwise
stated.
The term device is used throughout these instructions for use to refer to a Child's 4-Bar Knee.
Please read and ensure you understand all instructions for use, in particular all safety information
and maintenance instructions.
Application
This device is to be used exclusively as part of a lower limb prosthesis.
This device is for a single user.
It is a low profile polycentric knee for children which uses a 4 bar mechanism to provide
geometric stability during stance with an adjustable extension assist for control during swing
phase, and suitable for transfemoral and knee disarticulation users.
The geometry of the device provides increased toe clearance during swing phase. The build
height is short and upon sitting minimizes protrusion of the prosthetic knee beyond the contra-
lateral limb. This combination of features reduces asymmetry for users with longer residual limbs.
Features
• Adjustable spring extension assist
• Stable geometry on heel strike
• Lightweight and robust knee
• A range of proximal adapters
Activity Level
This device is recommended for users that have Activity Level 1-4. (Weight limits apply, see
Technical Data.)
Of course there are exceptions and in our recommendation we want to allow for unique,
individual circumstances and any such decision should be made with sound and thorough
justification.
Activity Level 1
Has the ability or potential to use a prosthesis for transfers or ambulation on level surfaces at fixed
cadence. Typical of the limited and unlimited household ambulator.
Activity Level 2
Has the ability or potential for ambulation with the ability to traverse low-level environmental barries
such as curbs, stairs, or uneven surfaces. Typical of the limited community ambulator.
Activity Level 3
Has the ability or potential for ambulation with variable cadence. Typical of the community ambulator
who has the ability to traverse most environmental barriers and may have vocational, therapeutic, or
exercise activity that demands prosthetic utilization beyond simple locomotion.
Activity Level 4
Has the ability or potential for prosthetic ambulation that exceeds basic ambulation skills, exhibiting
high impact, stress, or energy levels. Typical of the prosthetic demands of the child, active adult, or
athlete.
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