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Wheeless' Textbook of Orthopaedics

Mangled Extremity Severity Score (MESS)



                                                                           - from Johansen et.al. 1990)
Skeletal / soft-tissue injury
     Low energy (stab; simple fracture; pistol gunshot wound): 1
     Medium energy (open or multiple fractures, dislocation): 2
     High energy (high speed MVA or rifle GSW): 3
     Very high energy (high speed trauma + gross contamination): 4
Limb ischemia
     Pulse reduced or absent but perfusion normal: 1*
     Pulseless; paresthesias, diminished capillary refill: 2
     Cool, paralyzed, insensate, numb: 3*
Shock
     Systolic BP always > 90 mm Hg: 0
     Hypotensive transiently: 1
     Persistent hypotension: 2
Age (years)
     < 30: 0
     30-50: 1
     > 50: 2

* Score doubled for ischemia > 6 hours





- Discussion:
    - in the report by Bosse et al (JBJS 2001), the authors studied the clinical utility of five lower
           extremity injury-severity scoring systems;
           - 546 high-energy lower-extremity injuries were prospectively evaluated with use of five injury-severity
                  scoring systems for lower-extremity trauma designed to assist in the decision-making process for
                  the care of patients with such injuries;
           - 407 limbs remained in the salvage pathway six months after the injury;
           - the analysis did not validate the clinical utility of any of the lower-extremity injury-severity scores;
           - high specificity of the scores in all of the patient subgroups did confirm that low scores could be used to predict limb-salvage potential;
           - the converse was not true - low sensitivity of the indices failed to support the validity of the scores as predictors of amputation.
           - see tibial defect reconstruction and amputation following tibia fractures




Limb salvage versus amputation. Preliminary results of the Mangled Extremity Severity Score.

Amputations and Artificial Limbs--Symposium: Limb Salvage Versus Amputation: Preliminary Results of the Mangled Extremity Severity Score.

A Prospective Evaluation of the Clinical Utility of the Lower-Extremity Injury-Severity Scores  Michael J. Bosse, MD et al. (J Bone Joint Surg [Am] 83-A: 3-14, 2001)

To Reconstruct or Not to Reconstruct?

An Analysis of Outcomes of Reconstruction or Amputation after Leg-Threatening Injuries.

Ability of Lower-Extremity Injury Severity Scores to Predict Functional Outcome After Limb Salvage








Original Text by Clifford R. Wheeless, III, MD.

Last updated by Clifford R. Wheeless, III, MD on Monday, August 4, 2008 11:36 am