Method $1$:

Using Load Moment and Torso Moment to calculate Muscle Reaction Force. Estimate low back compression by combining Load Weight, Torso Weight and Muscle Reaction Force.

Method $2$:

Using back angle from Spine Curvature to calculate torso and load moments. Estimate Low Back Compression by combining Muscle Reaction Force with torso$/$load moments estimated by angle of sacral cutting plate and torso$/$leg posture.

Calculate the compressive forces using the Bloswick Model:

$5^{th}$ Percentile Male for Stature

Weight $170$ pounds

Biomechanics Analysis

Methods $1$

All critical measurements using Drillis and Contini $($see boxes$\_$

Moment due to UBW

Moment due to Load

Moment due to UBW and Load

Total Muscle Reaction Force on Erector Spinae Muscle

Estimated Compression Force

Is this Above the Action Limit?

Is this above MPL$?$

Methods $2$

Moment due to UBW

Moment due to Load

Moment due to UBW and Load

Total Muscle Reaction Force on Erector Spinae Muscle

Estimated Compression Force $($show formula including load, Torso Weight and Adjusted $$

Is this above Action Limit?

Is this above MPL$?$

Utah Back Compressive Force Model

Show all work for variables A$,$ B$,$ C

Total Compression Force

Is this above Action Limit?

Is this above MPL$?$

Utah Shoulder Momnet Model $($assum $2$ handed lift$)$

Show all work for Mb and Mf

Total Shoulder Moment Force

Is this lift hazardous based on two handed list$-$please show data to support your answer