Like many other areas including gun laws, there seems to be a lot of people who THINK that they know the fine points but have never studied the actual written descriptions.
My wife had a temporary placard after each her knee surgeries. She didn't use a cane or a walker as she had in the initial stages of her recoveries but she was still very limited in her mobility. We got a lot of glares because she had no signs of the surgeries unless you looked closely at her knee areas - her surgeon did a great job. She was encouraged by her therapist to try to achieve a normal gait when she walked but she was physically limited to the number of steps that she could take within a time period and had to rest between periods.
Here is the write-up on placards.
Emphasis mine.Placard and plate eligibility is based on a medical condition that meets the legal definition of a disability. "Disability" means a condition in which a person has:
Visual acuity of 20/200 or less in the better eye with correcting lenses
Visual acuity of more than 20/200 but with a limited field of vision in which the widest diameter of the visual field subtends an angle of 20 degrees or less
Mobility problems that substantially impair a person's ability to move around; these problems can be caused by:
Paralysis
Lung disease
Cardiac deficiency
Wheelchair confinement
Arthritis
Foot disorder
Other medical condition causing a person to use a brace, cane, crutch or other assistive device.
A parking placard or plate is ONLY valid when being used by the person with the disability or someone who is driving the person with the disability.
It is a violation of state law to use the placard or plates for a disabled parking spot without the person with the disability in the vehicle. People who misuse disabled parking placards are subject to fines of up to $1,250 and/or up to 50 hours of community service.