ON WHEELCHAIRS

Making Sense of Wheelchair Wheels, Part I - Erik Kondo

When it comes to wheelchair wheels, there is a tremendous amount of confusion. I am certainly not an expert on the subject, but I will...

Systemically Flawed "Research Studies" on Wheelchair Propulsion - Erik Kondo

Muscular able-bodied man in a hospital wheelchair.

Habitual Manual Wheelchair Slumping - Erik Kondo

Many manual wheelchair users and industry professionals claim that a rigid orthopedic backrest automatically prevents a wheelchair user...

The Need for Improved Wheelchair Literacy - Erik Kondo

Imagine you wanted information on the workings of a bicycle, you would seek out an experienced bicycle technician and rider. Someone who...

The Evolution of Wheelchairs – Erik Kondo

Civil war era wheelchair and user.

The World’s Worst Wheelchair, Part II – Erik Kondo

In this writing, I will explore how the hospital wheelchair (HWC) has evolved to having the trifecta of being (1) the most difficult...

Literally the “Worst” Wheelchair in the World, Part I – Erik Kondo

It is a common question that people ask “What is the best manual wheelchair?”. This question cannot be answered since there is no “best”...

Wheelchair Performance Outcomes: Absolute and Relative – Erik Kondo

Wheelchairs are like other personal mobility devices (PMDs) such that designers, manufacturers, and innovators are constantly attempting...

On Wheelchair Static and Dynamic Stability - Part III - Erik Kondo

Part I, Part II Inherent Conflicts between Static Stability and Dynamic Stability A manual wheelchair is complex device that can be setup...

On Wheelchair Static and Dynamic Stability (Part II) - Erik Kondo

Read PART I The World is Not Smooth and Flat Historically, wheelchairs have been designed primarily for rolling on flat and smooth...

On Wheelchair Static and Dynamic Stability (Part I )– Erik Kondo

Photo Credit: Mark Hunt

Why Are Wheelchair-Users Still in the Dark Ages? – Erik Kondo

Over the years, we have seen dramatic improvement in the development of artificial limbs for amputees. Prostheses have progressed from...

Wheelie Skills and More - Erik Kondo

A wheelie is maintained by balancing the wheelchair’s Center of Mass directly over the wheelchair’s rear axle. Performing a wheelchair...