(i) Dr Conrad's report, in effect, should be discounted as it was inconsistent with Professor Rawlinson's report and Professor Rawlinson had greater expertise.
69 In my opinion, the approach of the Registrar that I have described in the previous three paragraphs is wrong in principle. I have previously explained that the reports are not evidence and they do not, singly or together, have to establish a prima facie case against the defendants. The rule only requires that the experts' reports include opinions that "support" the matters referred to in sub-paragraphs (a), (b) and (c) of sub-rule 1.
70 It would be entirely open to a plaintiff to lead other evidence, not of an expert nature, which supplements the material contained in the reports filed under r 31.36(1) in such a way as to prove his or her case. This must be borne in mind when considering compliance with UCPR 31.36(3). Thus, evidence by eyewitnesses may supplement expert opinion to establish breach of duty of care. The plaintiff may adduce circumstantial evidence that may, alone, or in combination with expert evidence, establish causation in a specific case. The fact that experts do not infer causation on a balance of probabilities does not mean that a court may not: Seltsam Pty Limited v McGuiness [2000] NSWCA 29; (2000) 49 NSWLR 262 at [143]-[144] per Spigelman CJ. A plaintiff may rely on his or her own evidence to prove damage or to supplement evidence given by experts. Accordingly, a plaintiff may well comply with rule 31.36(1) even though the opinions expressed in the reports filed do not deal with each and every element of the plaintiff's case.
71 The fact that Professor Rawlinson did not distinguish in his report between Dr Khoury and the Health Service is irrelevant. Part of Professor Rawlinson's report was directed to relevant standards, conduct that might constitute breaches of those standards, and what consequences might flow from those breaches. To that extent, his report supported Ms Salzke's case. Other evidence, not of an expert nature, could be adduced to establish if and how Professor Rawlinson's opinions apply to Dr Khoury and the Health Service.
72 For the same reasons, the fact that Professor Rawlinson's opinions as to causation are not specific to Ms Salzke is irrelevant. Other evidence, not of an expert nature, may establish how those opinions are relevant to the link between breach of duty and the damages that Ms Salzke suffered.
73 In any event, the opinion expressed by Professor Rawlinson that it is more likely than not that Ms Salzke's dizziness and trouble balancing resulted from prolonged treatment with gentamicin, provides "support" within the meaning of UCPR 31.36(1) in the sense I have explained. The same applies to Professor Rawlinson's opinion that "gentamicin may have caused unsteadiness in Ms Salzke". There are other statements by Professor Rawlinson that are to similar effect.
74 UCPR 31.36(3) does not require an opinion regarding the detailed symptoms of which Ms Salzke complained.
75 With regard to the removal of the drain (and the case against the Health Service on this issue), Dr Conrad, in his first report, said:
"On the balance of probabilities, in that the early removal of the drain probably substantially contributed to the development of a local haematoma, in my opinion the accidental early removal of the drain would have been a substantial contributing factor to the infection and on the balance of probabilities, increased the chances of infection developing."
76 This opinion provided clear support to the element of causation in Ms Salzke's case based on the accidental removal of the drain.
77 With regard to the case based on the administration of gentamicin, Dr Conrad explained in his second report that the treating orthopaedic surgeon is always involved and participates in decision making as to what procedure and treatment needs to be implemented for infection control once infection has been diagnosed. Further, Dr Conrad said that an orthopaedic surgeon in 2003 "would certainly be aware of the dangers of gentamicin in relation to hearing and balance". These opinions tended to establish that Dr Khoury, as treating doctor, would have responsibility for management of Ms Salzke's infection both at Albury Base Hospital and at Holbrook District Hospital and would have known of the dangers of prescribing gentamicin in the dosage that was prescribed. To this extent these opinions supported Ms Salzke's case, both in relation to breach of duty against Dr Khoury, and to vicarious liability against the Health Service.
78 The Registrar's observations that Dr Conrad's reports did not include opinions supporting the matters referred to in sub-paragraphs (a), (b) and (c) of UCPR 31.36(1) were based on her opinion that those reports were inconsistent with Professor Rawlinson's report and Professor Rawlinson should be regarded as having greater expertise than Dr Conrad. Matters of inconsistency between experts and relative expertise, however, are not matters to be taken into account when determining compliance with UCPR 31.36(1). The Registrar was not entitled so to discount Dr Conrad's opinions.
79 The Registrar considered that Professor Rawlinson's report did not support Ms Salzke's case involving inappropriate prescription and administration of gentamicin because the excessive dosages of gentamicin occurred at Holbrook District Hospital, and Ms Salzke did not plead a case based on prescription and administration of gentamicin at that hospital.
80 Ms Salzke's original statement of claim set out the particulars of negligence against Dr Khoury and the Health Service. Particular (d) of the particulars of negligence alleged against Dr Khoury was his asserted "failure to properly or adequately treat the plaintiff's hip infection or possibility of hip infection post operatively". The particulars of negligence against the Health Service alleged that Ms Salzke was relying on "a non-delegable duty of care and vicarious liability in respect of the following particulars". Particular (f) was in the same terms as particular (d) alleged against Dr Khoury. These particulars are broad enough to encompass the administration of gentamicin at Holbrook District Hospital. It is not in dispute, as the Registrar, in effect, observed, that Dr Khoury was in charge of the management of Ms Salkze's infection while she was at Holbrook District Hospital.
81 I accept that, for an opinion in an expert's report to support a matter referred to in sub-paragraphs (a), (b) and (c) of UCPR 31.36(1), that opinion must fall within the case made out in the statement of claim. I accept that no mention is made expressly of Holbrook District Hospital in the statement of claim. I also accept that there is vagueness in the statement of claim by reason of the failure of the particulars of negligence to address issues of time and place. Nevertheless, in my opinion, those particulars are broad enough to encompass conduct at any hospital where Dr Khoury administered gentamicin to Ms Salzke. They are also sufficiently broad to encompass any such conduct by Dr Khoury for which the Health Service was vicariously liable.
82 Vagueness in the statement of claim is not a reason to hold that expert reports that are capable of falling within the particulars of negligence pleaded should be held not to comply with UCPR 31.36(1). There are other remedies available to a defendant should it wish to contend that it is embarrassed at the vagueness of the pleading.
83 Thus, in my view, the Registrar was incorrect when she held that the opinions expressed by Professor Rawlinson in relation to conduct at Holbrook District Hospital did not support Ms Salzke's case.
84 The same issue arises in the amended statement of claim. As I have explained, the Registrar dealt with the matter on the assumption that the amended statement of claim applied. Paragraph 30.1 of the amended statement of claim contains several allegations of negligence against Dr Khoury dealing with the use of gentamicin. Paragraph 30.2 of the amended statement of claim alleges that the Health Service, "by its servants and/or agents caused the infection in respects that are pleaded". One of the respects pleaded concerns the administration of gentamicin.
85 As the Registrar pointed out, the amended statement of claim refers to treatment by Dr Khoury up to July 2004 but not subsequently. It does not follow, however, that the particulars pleaded in paragraph 30 of the amended statement of claim are not broad enough to cover treatment by Dr Khoury administered at Holbrook District Hospital. Again there is an issue of vagueness in the statement of claim, but for the reasons I have already given, that vagueness does not mean that an expert report that is otherwise capable of falling within the particulars of negligence pleaded should be held not to comply with UCPR 31.36(1).
86 I should add that, in any event, Professor Rawlinson expressed opinions in his report that are capable of supporting a case of breach of duty of care in relation to the administration of gentamicin at Albury Base Hospital on the part of Dr Khoury (for which the Health Service would be vicariously liable).
87 Mr Downing of counsel, who represented the Health Service submitted that the experts' reports did not include opinions supporting the general nature and extent of damage alleged. This submission was based on the fact that the injuries and disabilities recounted by Dr Conrad and Professor Rawlinson, in their reports, were merely restatements of what these two experts were asked to assume by Ms Salzke's solicitor.
88 According to the original statement of claim Ms Salzke suffered the following injuries: