Description
Normalize supplied musculotendon length by a positive reference.
Movement geometry depends on coordinate registration, time origins, force signs and reference axes. A moment arm must already represent perpendicular leverage, a stride percentage has an endpoint convention, and a toe-to-heel projection differs from full Euclidean separation. Scalar results do not establish a movement diagnosis or a safe activity.
Normalize supplied musculotendon length by a positive reference.
When to use this tool
Use Musculotendon Length Reference Ratio when you already have measuredLength, referenceLength and need to normalize supplied musculotendon length by a positive reference.
How to use the tool and how it works
- Enter measuredLength, referenceLength. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read lengthRatio. Use the output convention below.
Require measuredLength>=0 and referenceLength positive/finite; return measured/reference.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| measuredLength | Measured Length | Required. Finite number; minimum 0. |
| referenceLength | Reference Length | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| lengthRatio | Length Ratio | Required. Finite number. |
{
"input": {
"measuredLength": 12,
"referenceLength": 10
},
"output": {
"lengthRatio": 1.2
}
}Limitations and assumptions
- Matching anatomical and length conventions are assumed. No reference, muscle state, strain, motion, clinical finding or safe length is determined.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated motion, force and timing records with a complete biomechanical model. Check coordinate frames, axis normalization and sampling limitations before interpreting local distances, moments or phase values as performance or clinical findings.
References
Similar or alternative tools
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