Established 1997


Karman 4-Wheeled Knee Walker

item #: 41511

sku : KW-100

brand : Karman

Karman 4-Wheeled Knee Walker

List price: $495.00

Leaves Warehouse in 1-2 days

Quick Overview

  • Ergonomic hand grips
  • Steerable unit for easy use and everyday drivability
  • Parking brake and slow down allows for safe stopping


The newest generation knee walker has been designed with comfort, safety, and end user in mind. Its new one piece solid knee pad offers the most support available on the market as well as the newest feature which allows the patient to rotate the pad sideways for relaxation and rest. The most necessary options are of course standard with the knee walker including large 8” wheels all around for use indoor and outdoor, a removable basket, and a quick release steering column for easy folding and storage.


  • Steerable unit for easy use and everyday drivability
  • Parking brake and slow down allows for safe stopping
  • Hub Brake design is the safest in the market
  • 8” solid flat free wheels can be used indoors/outdoors
  • Ergonomic hand grips help prevent pressure on hands
  • Handles collapse for easy carry and storage
  • Tool-free handle height adjustment from 31"- 40.5"
  • Tool-free seat height adjustment from 17" - 23.5"
  • 8” flat-free casters for extra stability
  • Basket included
  • Available in Black, White, or Burgundy
  • Free Shipping


Weight Capacity 350 lbs.
Product Weight 22.5 lbs.
Seat Width 15"
Seat Depth 7"
Seat-to-Floor Height 16" - 22"
Overall Width 16.5"
Overall Length 31"
Overall Height 41"
Max. Handle Height 41"
Min. Handle Height 31"
Frame Color Black - White
Number of Wheels 4
Front Wheel Size 8"
Rear Wheel Size 8"
Recommended User Height 5'3" - 6'4"
Warranty on Frame Lifetime Limited
Shipping Weight 26 lbs.

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Return Policy

If you are not 100% satisfied with your product, we offer a full refund (on most products, see below).
To qualify for a return please note the following:

  • Product must be clean, unused and in its original packaging.
  • Return shipping costs are the responsibility of the customer
  • Items must be returned within 30 days

You must have a return authorization number to qualify for a return:
Please call us at 1-800-320-7140 Monday - Friday 9am to 5pm EST to obtain a return authorization number and a return address. Returns may not be sent to our corporate address

Full Refund

We offer full refund on all:
  • Transport chairs
  • Standard manual wheelchairs
  • Light weight manual wheelchairs
  • Folding ultralightweight wheelchairs* (except for the 9000, etc)
  • Recliner wheelchairs
  • Heavy duty transport wheelchairs
  • Walkers
  • Rollators
  • Wheelchair accessories (bags, ramps & attachments)

10% Restocking Fee

There is a 10% restocking fee on all:
  • Electric Wheelchairs
  • Electric Scooters
  • Heavy duty wheelchairs
  • Volume sales
  • Karman products

15% Restocking Fee

There is a 15% restocking fee on all:
  • Lift chairs
  • Patient Lifts

Sorry, No Returns

We cannot accept returns on all:
  • Hospital beds
  • Mattresses
  • Ultra lightweight ridged frame wheelchairs
  • Custom wheelchairs
  • Court wheelchairs
  • Sport wheelchairs
  • Built to order items
  • Wound care
  • Wheelchair scales
  • Wheelchair Cushions
  • Back Cushions
  • Tempur-Pedic cushions
  • Invacare 9000 series reclining wheelchairs
  • Incontinence Products
  • Nutritionals
  • Bath Safety products
  • Adaptive Strollers
  • Harmar Products

Open Box Specials

  • Open Box Specials are new products that were ordered incorrectly or may have slight imperfections. These Specials are non-returnable and do not include any in-home service.

Refused Deliveries/Packages

  • If packages are refused at the point of delivery, you will be responsible for the return shipping.