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emergency ortho-trauma

NISS — New Injury Severity Score

Modification of the Injury Severity Score (Osler 1997). Sum of squares of the AIS scores of the three most severe injuries regardless of body region. Range 0–75 (any AIS 6 → automatic 75). Better predictor of mortality than ISS in penetrating and blunt trauma.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.