Range of Motion Calculator

Measure joint range of motion deficits by comparing measured flexion and extension to normal values for each joint.

Inputs

Joint Type

Measured Flexion

degrees

Measured Extension

degrees

Tab to move between fields

Results

Flexion Deficit

15 degrees

Percent of Normal

88.9%

Extension Deficit0 degrees

Total ROM120 degrees

How to Use This Calculator

Enter Joint Type, Measured Flexion, and Measured Extension.
Review Flexion Deficit (degrees) and Percent of Normal (%).
Use Extension Deficit (degrees) and Total ROM (degrees) to inform your decision.

How the result changes with Measured Flexion

Measured Flexion	Flexion Deficit	Percent of Normal
36	99 degrees	26.7%
126	9 degrees	93.3%
234	0 degrees	173.3%
324	0 degrees	240%

What each input means

Joint Type: 1 = Shoulder, 2 = Elbow, 3 = Hip, 4 = Knee, 5 = Ankle.
Measured Flexion: The measured flexion angle in degrees using a goniometer.
Measured Extension: The measured extension angle in degrees using a goniometer.

How this is calculated

Worked example, using the default values

Identify Input Parameters
Joint Type = 4, Measured Flexion = 120, Measured Extension = 0 = 3 input(s) provided
Calculate Flexion Deficit
Flexion Deficit
15 = 15
Calculate Percent of Normal
Percent of Normal
88.9 = 88.9%
Calculate Extension Deficit
Extension Deficit
0 = 0
Calculate Total ROM
Total ROM
120 = 120

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