Indexed As: Moore v. Getahun et al. Ontario Court of Appeal Laskin, Sharpe and Simmons, JJ.A. January 29, 2015.

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Blake Moore (respondent) v. Dr. Tajedin Getahun, The Scarborough Hospital - General Division, Dr. John Doe and Jack Doe (appellant) (C58338; 2015 ONCA 55) Indexed As: Moore v. Getahun et al. Ontario Court of Appeal Laskin, Sharpe and Simmons, JJ.A. January 29, 2015. Summary: The plaintiff sued the defendant orthopedic surgeon claiming that he suffered permanent damage to the muscles in his wrist due to compartment syndrome allegedly caused by the application of a full circumferential cast to treat a fractured wrist. The trial judge preferred the evidence of the plaintiff's expert witness over that of the orthopedic surgeon's expert witnesses and found that the application of the full circumferential cast was a breach of the standard of care and had caused the compartment syndrome to develop. The orthopedic surgeon appealed. The surgeon argued that the trial judge erred in ruling that it was improper for counsel to assist an expert witness in the preparation of the expert's report. The plaintiff agreed that the view expressed by the trial judge was erroneous, but argued that her error had no impact on the outcome of the trial. The surgeon also argued that the trial judge erred in the use she made of the surgeon's expert witness reports. The reports were not entered into evidence and the parties proceeded to call viva voce evidence from all expert witnesses. The expert reports were, however, made available to the judge as an aide memoire. In assessing the credibility of the expert witnesses called by the surgeon, the trial judge took into account what she perceived to be contradictions between the experts' viva voce evidence and the written reports. The plaintiff also conceded that the trial judge erred, but argued that this error was also harmless. A number of parties intervened regarding the expert evidence issues. The Ontario Court of Appeal dismissed the appeal. The court concluded that the trial judge erred in holding that it was unacceptable for counsel to review and discuss the draft expert reports. The trial judge further erred in using the written expert reports that were neither entered into evidence, nor the subject of cross-examination, to contradict and discredit aspects of the viva voce evidence of the surgeon's expert witnesses. The court concluded, however, that those errors did not affect the outcome. As no substantial wrong or miscarriage of justice flowed from the errors, the court would not be justified in ordering a new trial. expert opinion - The plaintiff sued an orthopedic surgeon for malpractice - The trial judge, preferring the evidence of the plaintiff's expert witness over that of the surgeon's expert witnesses, found a breach of the standard of care - The orthopedic surgeon appealed, arguing that the trial judge erred in criticizing the surgeon's counsel for discussing with their expert medical witness the content of his draft report - The judge suggested that, in light of the 2010 amendments to rule 53.03 of the Rules of Civil Procedure, counsel's practice of reviewing draft reports should stop and there should be full disclosure in writing of any changes to an

expert's final report as a result of counsel's corrections, suggestions or clarifications to ensure transparency in the process and to ensure that the expert witness was neutral - The Ontario Court of Appeal dismissed the appeal - The court concluded that the trial judge erred in holding that it was unacceptable for counsel to review and discuss the draft expert reports - The court rejected the trial judge's proclamation that the practice of consultation between counsel and expert witness to review draft reports had to end - However, the trial judge's error did not affect the outcome in this case - See paragraphs 33 to 66. expert opinion - The Ontario Court of Appeal stated that "... it would be bad policy to disturb the well-established practice of counsel meeting with expert witnesses to review draft reports. Just as lawyers and judges need the input of experts, so too do expert witnesses need the assistance of lawyers in framing their reports in a way that is comprehensible and responsive to the pertinent legal issues in a case. Consultation and collaboration between counsel and expert witnesses is essential to ensure that the expert witness understands the duties reflected by rule 4.1.01 and contained in the Form 53 acknowledgment of expert's duty. Reviewing a draft report enables counsel to ensure that the report (i) complies with the Rules of Civil Procedure and the rules of evidence, (ii) addresses and is restricted to the relevant issues and (iii) is written in a manner and style that is accessible and comprehensible. Counsel need to ensure that the expert witness understands matters such as the difference between the legal burden of proof and scientific certainty, the need to clarify the facts and assumptions underlying the expert's opinion, the need to confine the report to matters within the expert witness's area of expertise and the need to avoid usurping the court's function as the ultimate arbiter of the issues. Counsel play a crucial mediating role by explaining the legal issues to the expert witness and then by presenting complex expert evidence to the court. It is difficult to see how counsel could perform this role without engaging in communication with the expert as the report is being prepared" - See paragraphs 62 to 64. expert opinion - The Ontario Court of Appeal held that it was acceptable for counsel to review and discuss draft expert reports - The court discussed the extent to which consultations between counsel and expert witnesses and draft reports needed to be disclosed to an opposing party - The court stated that absent a factual foundation to support a reasonable suspicion that counsel improperly influenced the expert, a party should not be allowed to demand production of draft reports or notes of interactions between counsel and an expert witness - See paragraphs 67 to 78. expert opinion - In a medical malpractice suit, the trial judge ordered production of the drafts and notes from the defendant surgeon's expert - The judge noted that the surgeon's counsel and the expert had discussed the contents of the report in a conference call before the expert

issued his final report - The surgeon was found liable - The surgeon appealed, arguing that the trial judge erred in ruling that there should be full disclosure in writing of any changes to an expert's final report - The Ontario Court of Appeal held that absent a factual foundation to support a reasonable suspicion that counsel improperly influenced the expert, a party should not be allowed to demand production of draft reports or notes of interactions between counsel and an expert witness - Evidence of an hour and a half conference call did not meet the threshold of constituting a factual foundation for an allegation of improper influence - Here, the trial judge erred in law by stating that all changes in the reports of expert witnesses should be routinely documented and disclosed - She should not have ordered the production of the expert's notes and drafts - However, the trial judge's error did not affect the outcome in this case - See paragraphs 67 to 78. Evidence - Topic 7073 Opinion evidence - Reports by experts - Use of - The plaintiff sued an orthopedic surgeon for malpractice - The trial judge, preferring the plaintiff's expert evidence found a breach of the standard of care - The surgeon appealed, arguing that the trial judge erred in her use of the surgeon's expert witness reports - The reports were not entered into evidence, rather the parties called viva voce evidence from all expert witnesses - The judge had access to the reports as an "aide memoire" - In assessing the credibility of the surgeon's expert witnesses, the trial judge considered what she perceived to be contradictions between the experts' viva voce evidence and the written reports - The Ontario Court of Appeal held that the trial judge erred in using the written expert reports that were neither entered into evidence, nor the subject of cross-examination, to contradict and discredit aspects of the viva voce evidence of the surgeon's expert witnesses - However, the error did not affect the outcome - See paragraphs 79 to 87. Opinion evidence - Reports by experts - Medical reports - [See all and Evidence - Topic 7073]. Cases Noticed: Westerhof v. Gee Estate (2013), 310 O.A.C. 335; 2013 ONSC 2093 (Div. Ct.), refd to. [para. 24]. R. v. Mohan, [1994] 2 S.C.R. 9; 166 N.R. 245; 71 O.A.C. 241, refd to. [para. 33]. R. v. Abbey (W.N.) (2009), 254 O.A.C. 9; ; 246 C.C.c.(3d) 301; 2009 ONCA 624, refd to. [para. 33]. Maras v. Seemore Entertainment Ltd. et al., [2014] B.C.T.C. Uned. 1109; [2014] B.C.W.L.D. 4470; 2014 BCSC 1109, refd to. [para. 55]. Surrey Credit Union v. Wilson (1990), 45 B.C.L.R.(2d) 310 (S.C.), refd to. [para. 55]. Medimmune Ltd. v. Novartis Pharmaceuticals UK Ltd. & Anor, [2011] EWHC 1669 (Pat.), refd to. [para. 55]. Alfano v. Piersanti et al. (2012), 291 O.A.C. 62; 2012 ONCA 297, refd to. [para. 61]. Blank v. Canada (Minister of Justice), [2006] 2 S.C.R. 319; 352 N.R. 201; 2006 SCC 39, refd to. [para. 68]. Browne v. Lavery et al., [2002] O.T.C. 109; 58 O.R.(3d) 49 (Sup. Ct.), refd to. [para. 72].

Aviaco International Leasing Inc. et al. v. Boeing Canada Inc. et al., [2002] O.T.C. 734, refd to. [para. 72]. Conceicao Farms Inc. et al. v. Zeneca Corp. et al. (2006), 214 O.A.C. 161; 83 O.R.(3d) 792 (C.A.), refd to. [para. 25]. Mendlowitz v. Chaing, 2011 ONSC 2341, refd to. [para. 72]. Ebrahim et al. v. Continental Precious Minerals Inc. et al., [2012] O.T.C. Uned. 1123; 2012 ONSC 1123, refd to. [para. 77]. Khan v. College of Physicians and Surgeons (Ont.) (1992), 57 O.A.C. 115; 9 O.R.(3d) 641; 76 C.C.C.(3d) 110 (C.A.), refd to. [para. 117]. Statutes Noticed: Rules of Civil Procedure (Ont.), rule 4.1.01 [para. 60]; rule 53.03 [para. 36]. Authors and Works Noticed: Advocates' Society, Position Paper on Communication with Testifying Experts (June 2014), generally [para. 46]. Advocates' Society, Principles Governing Communications with Testifying Experts (June 2014), generally [para. 46]; principle 3 [para. 57]. Association of Professional Engineers of Ontario, Guideline: The Professional Engineer as an Expert Witness (September 2011), generally [para. 60]. Bryant, Alan W., Lederman, Sidney N., and Fuerst, Michelle K., Sopinka, Lederman & Bryant: The Law of Evidence in Canada (4th Ed. 2014), para. 6.299 [para. 88]; para. 6.300-6.301 [para. 91]; para. 14.220 [para. 75]. Canadian Institute of Actuaries, Actuarial Standards Board's Standards of Practice (October 2014), generally [para. 60]. Canadian Institute of Chartered Business Valuators, Code of Ethics (2012), Standard Nos. 110 and 310, [para. 60]. Goudge Report - see Ontario, Report of Inquiry into Pediatric Forensic Pathology in Ontario, Report: Policy and Recommendations. Ontario, Report of Inquiry into Pediatric Forensic Pathology in Ontario, Report: Policy and Recommendations (Goudge Report), p. 47 [para. 54]. Ontario, Ministry of the Attorney General, Report from the Civil Justice Reform Project: Summary of Findings and Recommendations (2007) (Osborne Report), p. 71 [para. 37]. Osborne Report - see Ontario, Ministry of the Attorney General, Report from the Civil Justice Reform Project: Summary of Findings and Recommendations. Counsel: J. Thomas Curry and Jaan E. Lilles, for the appellant; Paul J. Pape and Joanna Nairn, for the respondent; Matthew Gourlay and Samuel Walker, for the intervener, Criminal Lawyers' Association; Richard Halpern and Brian Cameron, for the intervener, Ontario Trial Lawyers Association; William D. Black, Jerome R. Morse and John J. Morris, for the intervener, The Holland Group; John A. Olah and Stephen Libin, for the intervener, Canadian Defence Lawyers Association;

Courtney Raphael, for the intervener, Canadian Institute of Chartered Business Valuators; Linda R. Rothstein and Jean-Claude Killey, for the intervener, The Advocates' Society. This appeal was heard on September 22-2 and 26, 2014, before Laskin, Sharpe and Simmons, JJ.A., of the Ontario Court of Appeal. The following decision was delivered for the court by Sharpe, J.A., on January 29, 2015 Editor: Elizabeth M.A. Turgeon Appeal dismissed. Opinion evidence - Reports by experts - Medical reports - The plaintiff sued an orthopedic surgeon for malpractice - The trial judge, preferring the evidence of the plaintiff's expert witness over that of the surgeon's expert witnesses, found a breach of the standard of care - The orthopedic surgeon appealed, arguing that the trial judge erred in criticizing the surgeon's counsel for discussing with their expert medical witness the content of his draft report - The judge suggested that, in light of the 2010 amendments to rule 53.03 of the Rules of Civil Procedure, counsel's practice of reviewing draft reports should stop and there should be full disclosure in writing of any changes to an expert's final report as a result of counsel's corrections, suggestions or clarifications to ensure transparency in the process and to ensure that the expert witness was neutral - The Ontario Court of Appeal dismissed the appeal - The court concluded that the trial judge erred in holding that it was unacceptable for counsel to review and discuss the draft expert reports - The court rejected the trial judge's proclamation that the practice of consultation between counsel and expert witness to review draft reports had to end - However, the trial judge's error did not affect the outcome in this case - See paragraphs 33 to 66. Opinion evidence - Reports by experts - Medical reports - The Ontario Court of Appeal stated that "... it would be bad policy to disturb the well-established practice of counsel meeting with expert witnesses to review draft reports. Just as lawyers and judges need the input of experts, so too do expert witnesses need the assistance of lawyers in framing their reports in a way that is comprehensible and responsive to the pertinent legal issues in a case. Consultation and collaboration between counsel and expert witnesses is essential to ensure that the expert witness understands the duties reflected by rule 4.1.01 and contained in the Form 53 acknowledgment of expert's duty. Reviewing a draft report enables counsel to ensure that the report (i) complies with the Rules of Civil Procedure and the rules of evidence, (ii) addresses and is restricted to the relevant issues and (iii) is written in a manner and style that is accessible and comprehensible. Counsel need to ensure that the expert witness understands matters such as the difference between the legal burden of proof and scientific certainty, the need to clarify the facts and assumptions underlying the expert's opinion, the need to confine the report to matters within the expert witness's area of expertise and the need to avoid usurping the court's function as the ultimate arbiter of the issues.

Counsel play a crucial mediating role by explaining the legal issues to the expert witness and then by presenting complex expert evidence to the court. It is difficult to see how counsel could perform this role without engaging in communication with the expert as the report is being prepared" - See paragraphs 62 to 64. Opinion evidence - Reports by experts - Medical reports - The Ontario Court of Appeal held that it was acceptable for counsel to review and discuss draft expert reports - The court discussed the extent to which consultations between counsel and expert witnesses and draft reports needed to be disclosed to an opposing party - The court stated that absent a factual foundation to support a reasonable suspicion that counsel improperly influenced the expert, a party should not be allowed to demand production of draft reports or notes of interactions between counsel and an expert witness - See paragraphs 67 to 78. Opinion evidence - Reports by experts - Medical reports - In a medical malpractice suit, the trial judge ordered production of the drafts and notes from the defendant surgeon's expert - The judge noted that the surgeon's counsel and the expert had discussed the contents of the report in a conference call before the expert issued his final report - The surgeon was found liable - The surgeon appealed, arguing that the trial judge erred in ruling that there should be full disclosure in writing of any changes to an expert's final report - The Ontario Court of Appeal held that absent a factual foundation to support a reasonable suspicion that counsel improperly influenced the expert, a party should not be allowed to demand production of draft reports or notes of interactions between counsel and an expert witness - Evidence of an hour and a half conference call did not meet the threshold of constituting a factual foundation for an allegation of improper influence - Here, the trial judge erred in law by stating that all changes in the reports of expert witnesses should be routinely documented and disclosed - She should not have ordered the production of the expert's notes and drafts - However, the trial judge's error did not affect the outcome in this case - See paragraphs 67 to 78. Opinion evidence - Reports by experts - Medical reports - The plaintiff sued an orthopedic surgeon for malpractice - The trial judge, preferring the plaintiff's expert evidence found a breach of the standard of care - The surgeon appealed, arguing that the trial judge erred in her use of the surgeon's expert witness reports - The reports were not entered into evidence, rather the parties called viva voce evidence from all expert witnesses - The judge had access to the reports as an "aide memoire" - In assessing the credibility of the surgeon's expert witnesses, the trial judge considered what she perceived to be contradictions between the experts' viva voce evidence and the written reports - The Ontario Court of Appeal held that the trial judge erred in using the written expert reports that were neither entered into evidence, nor the subject of cross-examination, to contradict and discredit aspects of the viva voce evidence of the surgeon's expert witnesses - However, the error did not affect the outcome - See paragraphs 79 to 87.