The medico-legal pitfalls of the medical expert witness

Abstract

The fastest growing field of law is undoubtedly that of Medical Law with the civil and disciplinary cases flowing from it. Globalization, international communication, development and evolution of Law as well as Medicine, cause this worldwide rising medical litigation. Humanitarian rights, post-modern scepticism and even iconoclastic attitudes contribute to this phenomenon. Medico-legal litigation and disciplinary complaints rise (in South Africa) up to 10 per cent per year. To assist the courts and legal profession, in medico-legal issues, helping the parties where the plaintiff has the burden of proof and the defendant for rebuttal, a medical expert witness must be used. The dilemmas and pitfalls arise, in that although knowledgeable medical experts could be used to guide the courts to the correct decision, the lack of a legal mind setting, court procedure and legal knowledge could affect the relevance, credibility and reliability, making the medical evidence of poor quality. The legal profession, deliberately, could “abuse” medical expert witnesses with demanding and coercion of results, which have unrealistic and unreasonable expectations. “Case building” occurs, especially in the adversarial systems of law, making the medical expert vulnerable under cross-examination, when it is shown that the witness has turned into a “hired gun” or is unfair. Thus, lacunae develop, making reasonable cases difficult and a quagmire of facts have to be evaluated for unreasonableness, credibility and appropriateness, compounded by the fact that seldom, cases are comparable. The danger is that the presiding officer could be misled and with limited medical knowledge and misplaced values, could reach the wrong findings. Several cases arguably show that this has led to wrongful outcomes and even unacceptable jurisprudence. The desire to “win” a case, can make a medical witness lose credibility and reasonableness with loss of objectivity, realism and relevance. With personality traits and subjectivity, the case becomes argumentative, obstinate and could even lead to lies. The miasmatic, hostile witness emerges, leading to embarrassing, unnecessary prolongation of court procedures. The medical expert witness should be well guided by the legal profession and well informed of the issues. Medical witnesses should have legal training and insight into the legal and court procedures. At the time of discovery of documents, via arbitration or mediation, medical experts should strive to reach consensus and then present their unified finding, helping the parties fairly and expediting the legal procedure and processes.