Extension Assist

The Certified Extension Assist is a unique Knee Orthosis providing significant extension assist at the knee joint in a prefabricated system. Offered in sizes extra small through extra large, or custom to measurement, scan, or cast.

CRK-7

Product Highlights:

• Provides Significant Extension Assist at Knee Joint
• High quality, low profile polycentric knee joints
• Assist provided by tubing attached medially and laterally
• Tubing extends from proximal thigh cuff through a modified
condyle attachment at knee center to distal cuff
• Strength of extension assist can be varied by simply adjusting the tension on the tubing through the ratchet buckle
• Midscection channel allows complete tension relief for sitting, or progression through the therapy/rehab process
• Removable/Washable Soft Interface Lining
• Prefabricated Sizing XS, S, M, L, XL or
• Custom to Measurement, Scan, or Cast
• Extension Assist Kits can be purchased separately to incorporate into desired KO or KAFO.

Indications & Uses:

• Quad Weakness
• Stabilizing Flaccid Knee
• M/L Instabilities with Knee Weakness
• Contracture Managment

Extension Assist Knee Orthosis

Product#
Size
Side
Calf Cirumference
Thigh Circumference
Max Knee Width

CRK-7-XSR

X-Small

Right

12"-13"

15"-16"

4"

CRK-7-XSL

X-Small

Left

12"-13"

15"-16"

4"

CRK-7-SR

Small

Right

13"-14"

17"-18"

4 1/4"

CRK-7-SL

Small

Left

13"-14"

17"-18"

4 1/4"

CRS-7-MR

Medium

Right

14"-15"

19"-20"

4 1/2"

CRS-7-ML

Medium

Left

14"-15"

19"-20"

4 1/2"

CRK-7-LR

Large

Right

15"-16"

21"-22"

4 3/4"

CRK-7-LL

Large

Left

15"-16"

21"-22"

4 3/4"

CRK-7-XLR

X-Large

Right

16"-17"

23"-24"

5"

CRK-7-XLL

X-Large

Left

16"-17"

23"-24"

5"

CRK-7-CR

Custom

*Custom to Measurment, Cast, or Scan

CRK-7-CR

Custom

*Custom to Measurment, Cast, or Scan

Extension Assist Kits

Certified offers several Extension Assist Kits that can be purchased to incorporate into desired off the shelf KO or your own custom KO or KAFO design.

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