¶ 1. Plaintiff Sally J. Taylor sued Fletcher Allen Health Care (FAHC) for medical negligence and negligent infliction of emotional distress, in connection with her medical care following a surgery performed on her lumbar spine. After plaintiff failed to disclose any expert witness in response to discovery requests, FAHC moved for summary judgment, arguing that plaintiffs claims failed as a matter of law without an expert witness. The trial court granted FAHC’s motion. We agree with the trial court that this case is sufficiently complex that plaintiff cannot prove her claims without expert testimony. Accordingly, we affirm.
¶ 2. Plaintiff presented to FAHC with “severe pain [and] severe disability” in her lower back and underwent surgery in which doctors fused part of her lower spine with internal hardware. During the first few days following the surgery, plaintiff made reasonable progress toward recovery. On the third day, however, a nurse was assisting plaintiff in moving to the bathroom when plaintiff alleges that the nurse “withdrew support and assistance . . . unexpectedly and without warning and caused [p]laintiff to fall violently on to the toilet.” Following this incident, plaintiff experienced severe pain at the surgical site, and claimed that FAHC providers did not adequately address her pain complaints.
¶ 3. Due to her behavior at this time, plaintiff was referred for a psychiatric consultation, in which the psychiatrist noted that plaintiff complained of poor sleep and back pain. Her surgeon noted that plaintiff’s alignment appeared to have changed, and suspected that one of the screws in her spine had perhaps loosened or even been pulled out. Accordingly, plaintiff underwent a second surgery, and the surgeon discovered that the hardware in her spine had loosened.
*420¶ 4. Following the successful second surgery, plaintiff filed suit. Unable to find an attorney to represent her, plaintiff proceeded with the suit pro se. In her complaint, plaintiff claimed that FAHC had been negligent in allowing her to fall onto the toilet, for “failing to recognize and diagnose the failure of the hardware” that had been installed during the first surgery, and for its treatment of plaintiff “in connection with her pain complaints following the fall.” She also claimed that FAHC’s negligence caused her to suffer severe emotional distress. FAHC answered the complaint and, in its discovery request, asked plaintiff to identify her expert witnesses. Plaintiff never responded. Following attempts by FAHC and the court to craft a discovery schedule, plaintiff eventually filed a proposed discovery schedule with May 1, 2011 as her deadline for expert disclosure. The court approved this discovery schedule.
¶ 5. Plaintiff did not comply with her May 1 deadline for expert disclosure. So, nearly eight months after suit was filed, FAHC moved for summary judgment, arguing that without expert testimony, plaintiffs claims failed as a matter of law. Plaintiffs opposition to the motion argued that she did not need expert testimony because her case fell within the “common sense exception rule.” In essence, plaintiff argued that the alleged breach of medical care was so obvious that it may be understood by a layperson without the aid of expert testimony. She argued that “hiding and omitting major X-Ray results is all so straight forward and obvious that it may be understood by a lay person such as myself’; that “[t]o the lay person . . . there appears to be an ongoing cover up after the bathroom fall”; and that her claim of negligent infliction of emotional distress “is apparent even to a lay person, such as myself. I repeatedly beg, cry and plea for proper medical care as I state, ‘there is something wrong with my spine after the fall.’ ”
¶ 6. In describing the events leading up to her fall onto the toilet, plaintiff wrote:
I was taught a well place procedure technique and drill to use during bathroom toilet usage. I was told the importance of the nurse assisting me, and this was physical manual labor by the nurse. The nurse was to hold, lift and support me upon and off the toilet. The head nurse spent a lot of time with me and the drill *421technique because of its great importance to safety. . . . Then another nurse came on duty and she neglected to use the procedure and because of her neglect I had a hard fall. The hospital had specific nursing management standards, guidelines and protocols which failed to be followed. The responsible nurse deviated from the accepted standard of nursing care.
In this description, plaintiff ascribed fault and cause to the hearsay statements of another nurse but offered no competent evidence sufficient to meet the requirements of expert disclosure or Vermont Rule of Civil Procedure 56. She further stated that “the gait belt device was not used during my hospital stay,” suggesting that the “head nurse” did not use the device either. The trial court disagreed with plaintiff’s position regarding the common sense exception rule, and granted FAHC’s motion for summary judgment, ruling that “[wjithout a medical expert, plaintiff cannot prove her case. The time for disclosure of experts having passed, [FAHC] is entitled to summary judgment.”
¶ 7. On appeal, plaintiff raises essentially the same argument as in her opposition to the motion for summary judgment — that she should be permitted to proceed without an expert witness because her claims are so simple that they are easily understood by laypeople. She reasons that this case is a matter of common knowledge because anyone can understand her fall caused her back surgery failure. She also claimed some x-ray results were withheld from her and this intentional concealment caused her distress.
¶ 8. We review summary judgment rulings de novo, using the same standard as the trial court. Gallipo v. City of Rutland, 2005 VT 83, ¶ 13, 178 Vt. 244, 882 A.2d 1177. Summary judgment is appropriate if, after reviewing the “pleadings, depositions, answers to interrogatories, and admissions on file, together with the affidavits, if any,” the movant “show[s] that there is no genuine issue as to any material fact” and the movant “is entitled to judgment as a matter of law.” Id.; V.R.C.P. 56(c)(3).
¶ 9. We start by examining the “common sense exception” (also known as the “common knowledge rule”) presented by plaintiff. While we have never formulated a rule with either of these exact names, other courts and academics have done so. See generally J. King, The Common Knowledge Exception to the *422Expert Testimony Requirement for Establishing the Standard of Care in Medical Malpractice, 59 Ala. L. Rev. 51 (2007) (proposing reforms to the common knowledge rule). The reason for the general rule requiring expert testimony is that “[t]he human body and its treatment are extraordinarily complex subjects requiring a level of education, training and skill not generally within our common understanding.” Noyes v. Gagnon, No. 2007-311, 2008 WL 2811281, at *2 (Vt. Feb. 6, 2008) (unpub. mem.), http://www.vermontjudiciary.org/d-upeo/upeo.aspx. We have joined other jurisdictions by holding that while medical malpractice plaintiffs must generally use an expert witness to satisfy their burdens of proving the elements of medical negligence, an exception to the “general rule exists in cases where the violation of the standard of medical care is so apparent to be comprehensible to the lay trier of fact.” Senesac v. Assocs. in Obstetrics & Gynecology, 141 Vt. 310, 313, 449 A.2d 900, 902 (1982) (quotation omitted).
¶ 10. The facts of the present case and the claims of fault and causation are sufficiently complex as to be beyond the scope of common knowledge to a layperson. Plaintiff’s first claim of medical negligence is that the nurse should not have let her fall onto the toilet. Plaintiff argued in her opposition to FAHC’s motion for summary judgment that the “acceptable proper standard of care that is taught in Vermont nursing schools in assisting a patient who is recovering from spinal fusion surgery to the bathroom involves the use of the gait belt device. This gait belt device was not used during [her] hospital stay.” She included with her brief excerpts from what appear to be various nursing textbooks that explain how a nurse should use a gait belt or transfer belt to assist a patient in walking. The texts provide detailed instructions on how the belt attaches to a patient, and what to do if the patient falls. The court, presented with her unsupported statement that the proper standard of care required use of a gait belt, concluded that expert testimony was required to prove that theory.1
¶ 11. However, as plaintiff claims, neither the procedure taught by the head nurse nor the gait belt was used by the second nurse *423during the trip to bathroom in which she fell. Reading further, the nursing text excerpt on which plaintiff relies states, “Several methods are used for assisting a client with ambulation,” of which a gait belt is one such method. Whether a gait belt should have been used in this case or whether the use of a gait belt could have prevented her drop onto the toilet is beyond the ken of a layperson. There are countless variables that could explain the lack of a gait belt, and only testimony from an expert familiar with general nursing practices and the details of plaintiff’s medical record would enable a jury to make an informed decision as to whether FAHC breached its duty of care by not using a gait belt in this case. We agree that any layperson could understand that a tumble onto a toilet seat could cause pain, and that an expert witness would not generally be required for a simple case in which a nurse or other health care attendant is alleged to have negligently dropped a patient. Our holding here is therefore limited to the unique facts of this case given the specificity of plaintiffs argument — that the nurse failed to use a specific tool and technique and that the drop was the cause of the need for the second surgery. Those claims are outside of the experience of typical layperson’s understanding. Even if plaintiff could establish that the nurse negligently dropped her without relying on expert testimony, she could not, without an expert, argue to the jury that the hardware loosened as a result of the fall, or that her ongoing back pain and the need for a second surgery or any of the subsequent medical treatments were the result of the fall.
¶ 12. Plaintiff next makes two related complaints that FAHC was negligent for “failing to recognize and diagnose the failure of the hardware installed” during the first surgery and in “its treatment of [pjlaintiff in connection with her pain complaints following [her] fall.” She claimed that a “CT examination revealed displaced fractures of the transverse process on [her] L3, L4 and L5 vertebrae which had not been present prior to [her] fall.” Implicit in these allegations is a correlation between her fall and the fact that a second surgery revealed a hardware failure — specifically, a loosened screw. Indeed, she alleges that FAHC ignored her complaints and attributed her pain to a “myriad of causes unrelated to her fall.” In a claim of medical negligence, a “plaintiff has the burden of proving the applicable standard of care, that defendant breached that standard, and that as a proximate result plaintiff suffered injuries that would not other*424wise have occurred.” Jones v. Block, 171 Vt. 569, 569, 762 A.2d 846, 848 (2000) (mem.). Proving proximate causation in medical negligence cases is notoriously difficult. See Bender v. Dingwerth, 425 F.2d 378, 381 (5th Cir. 1970) (“The plaintiffs difficulty in [proving medical negligence] cases . . . is . . . the failure to prove that there was any causal relationship at all between the doctor’s act and the ensuing injury.”). It is precisely for this reason that we generally require expert testimony. See Clayton v. Unsworth, 2010 VT 84, ¶ 17, 188 Vt. 432, 8 A.3d 1066 (expert testimony required to show conduct was proximate cause of harm in professional malpractice case).
¶ 13. In this case, plaintiffs medical history prior to the surgeries currently at issue sheds some light on why she needs expert testimony to prove causation. She has degenerative lumbar scoliosis and had had at least two other surgeries before the two at issue here. While the medical records following her second surgery in this case show that there had, indeed, been a hardware failure, the reports do not explain how or why this failure occurred. While it is possible that the failure of the apparatus was a direct and proximate result of plaintiffs fall, there is no way for a jury to intelligently evaluate the evidence without expert testimony. “Although there is an understandable tendency to conclude that an undesired result following a surgical procedure necessarily implies negligent conduct, that is not the reality or the law.” Noyes, 2008 WL 2811231, at *2. As explained above, plaintiff cannot prove medical negligence, or the causal link to her injuries, without expert testimony. Accordingly, plaintiff cannot make a prima facie case for medical negligence, and FAHC is entitled to summary judgment as a matter of law.
¶ 14. In the interest of addressing all of plaintiffs claims, we note that she repeatedly states in her appellate brief that FAHC withheld crucial medical information in an attempt to cover up her fall. She argues that FAHC did not disclose to her the true findings of CT scans and x-rays. She presents these claims as part of her case for medical negligence. However, nothing in her complaint mentioned an attempt to cover up the accident or withhold information. Normally issues not raised at the trial court cannot be raised on appeal. State v. Rideout, 2007 VT 59A, ¶ 19, 182 Vt. 113, 933 A.2d 706 (“As a general rule, we will not consider issues that were not raised with specificity and clarity at trial.”). *425Even giving plaintiff the leeway that we generally accord to pro se litigants, see Zorn v. Smith, 2011 VT 10, ¶ 22, 189 Vt. 219, 19 A.3d 112, plaintiff’s claims for medical negligence fail. The alleged withholding of information and cover np are but one brick in the wall that plaintiff must build to prove negligence. However, her claim of medical negligence ultimately fails because she could not provide an expert to explain causation. Any alleged cover up would not change this fact.
¶ 15. Finally, plaintiff’s second claim in her complaint was for negligent infliction of emotional distress. She asserted that FAHC’s medical negligence caused her to suffer severe emotional distress. However, a claim of negligent infliction of emotional distress is premised on a finding of negligence. See Lenoci v. Leonard, 2011 VT 47, ¶ 9, 189 Vt. 641, 21 A.3d 694 (mem.) (“[T]o maintain either her wrongful death or negligent-infliction-of-emotional-distress claim — both of which sound in negligence — plaintiff must establish [a duty of care].”). As explained above, plaintiff cannot make a prima facie case for negligence; her claim for negligent infliction of emotional distress necessarily fails too.
Affirmed.
The failure to use the gait belt formed the basis of her claim that a layperson could understand that it was negligence not to use the device. It was not a mere “passing reference to a ‘gait belt’ ” as suggested by the dissent. Post, ¶ 16. And, notwithstanding the fact that the dissent. seems to know quite a bit about a gait belt, not everyone shares this knowledge.