(January 13, 2016, 12:14 PM EST) -- NEW ORLEANS — An expert may not testify as to the ergonomics of a plaintiff’s body positioning during the time he allegedly injured himself lifting a valve and the effects of lifting versus catching a falling item, a Louisiana federal judge held Jan. 12, finding that a juror could use common experience and knowledge to reach a conclusion (Randall Sapp v. Wood Group PSN, Inc., et al., No. 15-3, E.D. La.; 2016 U.S. Dist. LEXIS 3501)....