ORDER

Employee Donna Werber appeals from a Final Award of the Labor and Industrial Relations Commission issued on January 29, 1999, in favor of Employer Washington University. The Commission found Employer’s witnesses to be credible and Employee’s witnesses to not be credible. It determined that Employee’s work was not a substantial factor in causing her bilateral carpal tunnel syndrome or her heel injury. Employee raises four separate points on appeal regarding witness credibility and one point alleging improper admission of evidence.1

We have reviewed the briefs of the parties and the record on appeal and find that the Award is supported by substantial and competent evidence and. is not against the weight of the evidence. We defer to the Commission on credibility of witnesses and the weight to be accorded their testimony. Jaycox v. General American Life Ins. Co., 992 S.W.2d 240, 244 (Mo.App. E.D. 1999). Admission of evidence and making a determination regarding whether a good and sufficient foundation was laid for that evidence is within the Commission’s sound discretion. See, Hayes v. Hudson Foods, Inc., 818 S.W.2d 296, 301 (Mo.App. S.D. 1991). An extended opinion reciting detailed facts and restating principles of law would serve no precedential or jurisprudential purpose. We affirm the Award pursuant to Rule 84.16(b).