Gross Motor Function Measure (GMFM)- What is it? Why would I use it? 88 or 66?

Here is a breakdown between the GMFM-88 and the GMFM-66.

In this video, I'll cover facets to the GMFM I consider to be most influential. I describe both the GMFM-88 and the GMFM-66, when to use one version over the other, some of the limitations associated with this assessment and a few key points to understand.

Here are a few timestamps that might be useful:
What is the GMFM? 1:01 and 4:26
What populations does this serve? 1:34 and 2:40
How long does this outcome measure take to administer? 4:50
Is there a tool that can help me identify the GMFM's use? 5:47
What is the GMFM? 6:55
When should I use the GMFM-88 vs the GMFM-66? 7:57
Primary limitations to the GMFM: 10:50
Other points to consider: 11:47
Helping me: 13:07

Quick takeaways:
The GMFM is a criterion-referenced observational scale.
Validity and reliability are most substantiated in children with cerebral palsy from 5 months to 16 years of age who possess motor skill equivalents less than or equal to 5 years of age.
GMFM is broken into 5 dimensions:
Laying and Rolling,
Sitting,
Crawling and Kneeling,
Standing,
Walking, Running and Jumping (all coupled into one category)
Consider using in conjunction with the Gross Motor Function Classification System (GMFCS).
GMFM-66:
Less time consuming.
Primarily used in children with CP.
GMFM-88:
More descriptive, but more time consuming.
In addition to use in children with CP, you can use it for Down Syndrome, SMA, TBIs.
More preferred for children of higher GMFCS level (aka more disabled), given it’s a better descriptor and provides a more precise representation of the child's actual motor level and change over time.
If a child requires footwear, orthoses, or other mobility aids during assessment.
Limitations:
The measure does not evaluate fine motor skills.
The measure is based on observation, and thus the results are subject to inter-observer variability.
If a child is ambulatory, you need access to stairs.
Only tracks the LEVEL of completion for various tasks.
Lack of ability to assess or track QUALITY of movement.
Inability to accurately assess the severity of asymmetries present.


Links to my other videos on standardized outcome measures:
AIMS:    • Alberta Infant Motor Scale (AIMS)  
BOT-2:    • BOT-2 Overview  
PDMS-2:    • Peabody Developmental Motor Scales (2nd Ed...  

Links mentioned in the video for supportive resources:
PDMS-2:    • Peabody Developmental Motor Scales (2nd Ed...  
GMFCS: https://cerebralpalsy.org.au/our-rese...
GMFM-88: https://canchild.ca/system/tenon/asse...
GMFM-66 (with associated algorithm for identification of which item set to use): https://canchild.ca/system/tenon/asse...
Background by 'Free Creative Stuff' from Pexels: https://www.pexels.com/video/a-pastel...

#physicaltherapy #education #training #rehab #GMFM