REBA Leg Posture Score Calculator
REBA leg component support 1/2 plus nonseated knee bend beyond 30 through 60 degrees +1 or beyond 60 degrees +2; explicitly seated observations omit knee-bend additions. Not total risk score or work-safety approval; caller independently establishes posture evidence and protocol applicability.
Description
Rapid Entire Body Assessment (REBA) leg scoring distinguishes support conditions and knee flexion.
Rapid Entire Body Assessment (REBA) leg scoring distinguishes support conditions and knee flexion.1
A seated observation follows a different adjustment branch from the standing knee-flexion additions in this implementation. Use this tool to calculate REBA Leg Posture Score from the supplied measurements and assumptions.
When to use REBA Leg Posture Score Calculator
Use this tool to calculate REBA Leg Posture Score from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use REBA Leg Posture Score Calculator and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter bilateralStableSupport, kneeFlexionDegrees, observedSeated, using the field meanings and rules below, then run the tool.
- Read rebaLegScore. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| bilateralStableSupport | Bilateral stable support | boolean | Required |
| kneeFlexionDegrees | Knee flexion degrees | number | Required |
| observedSeated | Observed seated posture | boolean | Required |
Enter knee angle from zero through 180 degrees, stable-support and seated booleans. Base is 1 for stable support and 2 otherwise. When not seated, add 1 for angle>30 through 60, and 2 for angle>60; seated observations receive no knee addition. Exact 30 adds zero and exact 60 adds one.
legScore=(stable?1:2)+(seated?0:knee>60?2:knee>30?1:0) Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| rebaLegScore | Reba Leg Score; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"bilateralStableSupport": true,
"kneeFlexionDegrees": 45,
"observedSeated": false
},
"output": {
"rebaLegScore": 2
}
}Limitations and assumptions
A seated observation follows a different adjustment branch from the standing knee-flexion additions in this implementation. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use REBA Trunk Score Calculator for this related task: REBA uses observed trunk posture and additional movement indicators to form a component score.
Use REBA Arm-Wrist Score Calculator when its separate inputs and assumptions fit the question: REBA arm and wrist components encode observed joint positions and additional conditions.
References
-
REBA Leg Posture Score Calculator — tool.io
Similar or alternative tools
- REBA Trunk Score Calculator
REBA uses observed trunk posture and additional movement indicators to form a component score.
- REBA Arm-Wrist Score Calculator
REBA arm and wrist components encode observed joint positions and additional conditions.