Shoulder Range of Motion Calculator
ROM comparison to normal values by movement.
Inputs
Results
Average ROM deficit (%)
23
Total arc deficit (%)24
Flexion deficit (%)22
Abduction deficit (%)28
Avg rotation deficit (%)26
UE impairment estimate (%)5.8
Whole person impairment (%)3.5
Functional Class1
Most Restricted MovementInternal rotation
Most Restricted Deficit29
How to Use This Calculator
- Measure shoulder range of motion with a goniometer and enter each value in degrees: Flexion (normal 180°), Extension (normal 60°), and Abduction (normal 180°).
- Enter Internal rotation (normal 70°), External rotation (normal 90°), and Adduction (normal 45°) measurements.
- The calculator compares each measured value to AAOS normal values and computes individual deficit percentages.
- Review the Average ROM deficit (%), Total arc deficit (%), and the estimated Upper Extremity impairment (%) per AMA Guides (simplified).
- Use the Whole person impairment (%) output for functional capacity evaluations or disability ratings.
How the result changes with Adduction (°)
| Adduction (°) | Average ROM deficit (%) |
|---|---|
| 6 | 36 |
| 21 | 30 |
| 39 | 23 |
| 54 | 18 |
What each input means
- Flexion (°)
- Forward elevation in degrees. Normal = 180°.
- Extension (°)
- Backward extension in degrees. Normal = 60°.
- Abduction (°)
- Arm raised to the side in degrees. Normal = 180°.
- Internal rotation (°)
- Arm behind back rotation in degrees. Normal = 70°.
- External rotation (°)
- Arm rotated outward in degrees. Normal = 90°.
- Adduction (°)
- Arm across body in degrees. Normal = 45°.
What each result means
- Average ROM deficit (%)
- Mean percentage deficit across all planes of motion.
- Total arc deficit (%)
- Percentage deficit in total arc of motion.
- Flexion deficit (%)
- Percentage deficit in forward flexion.
- Abduction deficit (%)
- Percentage deficit in abduction.
- Avg rotation deficit (%)
- Average deficit of internal and external rotation.
- UE impairment estimate (%)
- Estimated upper extremity impairment percentage (AMA Guides simplified).
- Whole person impairment (%)
- Estimated whole-person impairment (UE × 0.6).
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersFlexion (°) = 140, Extension (°) = 45, Abduction (°) = 130, Internal rotation (°) = 50 = 6 input(s) provided
- Calculate Average ROM deficitAverage ROM deficit23 = 23
- Calculate Total arc deficitTotal arc deficit24 = 24
- Calculate Flexion deficitFlexion deficit22 = 22
Engine last updated .
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