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S T A T E O F M I C H I G A N

C O U R T O F A P P E A L S

VICTOR KHZOUZ and AMAL KHZOUZ,

Plaintiffs-Appellees,

UNPUBLISHED

March 13, 2018

v No. 333901

Wayne Circuit Court

STEPHEN MENDELSON, MD, and 

MENDELSON ORTHOPEDICS, PC,

LC No. 14-009384-NH

Defendants-Appellants.

Before: M. J. KELLY, P.J., and JANSEN and METER, JJ.

PER CURIAM.

In this medical malpractice case, defendants, Stephen Mendelson, M.D., and his practice, 

Mendelson Orthopedics, P.C., appeal by leave granted1 the trial court’s order granting partial 

summary disposition in favor of plaintiffs, and denying defendants’ motion in limine to preclude 

certain expert testimony as scientifically unreliable. We reverse and remand for further 

proceedings consistent with this opinion.

I. FACTUAL BACKGROUND

This case arises out of post-surgical treatment that plaintiff2 received from defendant Dr. 

Mendelson, a board-certified orthopedic surgeon, following arthroscopic knee surgery in August

2012. During the procedure, Dr. Mendelson inserted a “pain pump” in plaintiff’s knee. The 

parties dispute whether the pain pump was placed subcutaneously (i.e., under the skin) or 

intraarticularly (i.e., within the joint). Anesthesia (called bupivacaine) from the pump apparently 

managed plaintiff’s pain effectively following the surgery until the pump was removed. At that 

point, however, plaintiff’s pain increased dramatically. A subsequent MRI revealed that plaintiff 

had lost a significant amount of cartilage in his knee, and plaintiff eventually sought treatment 

from a different physician. 

 1 Victor Khzouz v Stephen Mendelson MD, unpublished order of the Court of Appeals, entered 

November 29, 2016 (Docket No. 333901).

2 References to plaintiff in the singular denote plaintiff Victor Khzouz.
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Plaintiff sued defendants for medical malpractice. He alleged that bupivacaine from the 

pain pump had caused a condition called chondrolysis, causing the cartilage in plaintiff’s knee to 

rapidly deteriorate. Plaintiff further alleged that Dr. Mendelson’s use of the pain pump fell 

below the applicable standard of care.

During discovery, the parties deposed five experts. Defendants’ experts included Dr. 

Mendelson, Dr. John Denzin, and Dr. Roland Brandt. Plaintiff’s included Dr. Harish Hosalkar 

and Dr. George Pappas. 

Following discovery, the parties filed motions that essentially attacked the other side’s 

experts. Defendants filed a motion in limine seeking to preclude “unreliable” testimony of 

plaintiff’s experts, while plaintiff filed a motion for partial summary disposition, arguing that 

there was no genuine issue of material fact whether Dr. Mendelson breached the applicable 

standard of care by inserting the pain pump. In support of their respective motions, the parties 

presented several pieces of medical literature for the trial court’s consideration. The literature in 

question concerns pain pumps used following arthroscopic shoulder surgery or intraarticularly, 

and it does not squarely address subcutaneous placement of a bupivacaine pain pump following 

arthroscopic knee surgery.

Ultimately, the trial court ruled in plaintiffs’ favor with regard to both their motion for 

partial summary disposition and defendants’ motion in limine challenging the reliability (and 

thus the admissibility) of the testimony of Dr. Pappas and Dr. Hosalkar. Plaintiffs sought and 

were granted interlocutory review in this Court. 

II. STANDARDS OF REVIEW

This Court reviews de novo a trial court’s decision regarding a motion for summary 

disposition. Heaton v Benton Constr Co, 286 Mich App 528, 531; 780 NW2d 618 (2009). The 

trial court granted plaintiffs partial summary disposition under MCR 2.116(C)(10). 

A motion under MCR 2.116(C)(10) tests the factual support of a plaintiff’s claim. 

Summary disposition is appropriate under MCR 2.116(C)(10) if there is no 

genuine issue regarding any material fact and the moving party is entitled to 

judgment as a matter of law. In reviewing a motion under MCR 2.116(C)(10), 

this Court considers the pleadings, admissions, affidavits, and other relevant 

documentary evidence of record in the light most favorable to the nonmoving 

party to determine whether any genuine issue of material fact exists to warrant a 

trial. A genuine issue of material fact exists when the record, giving the benefit of 

reasonable doubt to the opposing party, leaves open an issue upon which 

reasonable minds might differ. [Zaher v Miotke, 300 Mich App 132, 139-140; 

832 NW2d 266 (2013) (quotations marks and citations omitted).]

“Circumstantial evidence can be sufficient to establish a genuine issue of material fact, but mere 

conjecture or speculation is insufficient.” McNeill-Marks v Midmichigan Med Ctr-Gratiot, 316 

Mich App 1, 16; 891 NW2d 528 (2016). “This Court is liberal in finding genuine issues of 

material fact.” Jimkoski v Shupe, 282 Mich App 1, 5; 763 NW2d 1 (2008).
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On the other hand, this Court reviews for an abuse of discretion the circuit court’s 

Daubert3 determination (i.e., its decision whether to exclude expert evidence for lack of 

scientific reliability). Elher v Misra, 499 Mich 11, 21; 878 NW2d 790 (2016). “An abuse of 

discretion occurs when the trial court chooses an outcome falling outside the range of principled 

outcomes,” and “[t]he admission or exclusion of evidence because of an erroneous interpretation 

of law is necessarily an abuse of discretion.” Id. “We review de novo questions of law 

underlying evidentiary rulings, including the interpretation of statutes and court rules.” Id.

III. ANALYSIS

Defendants argue that the trial court erred in several distinct and yet closely interrelated 

ways. They further argue that the trial court’s errors warrant reversal. We agree.

“In a medical malpractice case, the plaintiff bears the burden of proving (1) the 

applicable standard of care, (2) a breach of that standard by the defendant, (3) an injury, and (4) 

proximate causation between the alleged breach of duty and the injury.” Rock v Crocker, 499 

Mich 247, 255; 884 NW2d 227 (2016). At issue here are the first two elements, and as a general 

rule, “[e]xpert testimony is required in medical malpractice cases to establish the applicable 

standard of care and to demonstrate that the defendant somehow breached that standard.” 

Birmingham v Vance, 204 Mich App 418, 421; 516 NW2d 95 (1994).4 A defendant physician 

may be qualified to offer expert testimony, including expert testimony regarding the applicable 

standard of care. Rice v Jaskolski, 412 Mich 206, 212; 313 NW2d 893 (1981). 

For these purposes, “a ‘specialty’ is a particular branch of medicine or surgery in which 

one can potentially become board certified,” and “a ‘specialist’ is somebody who can potentially 

become board certified.” Woodard v Custer, 476 Mich 545, 561; 719 NW2d 842 (2006). Given 

that Dr. Mendelson was board-certified in orthopedic surgery at the time he utilized the pain 

pump at issue in this case, the parties agree that he qualifies as an orthopedic specialist. 

Consequently, he is held to a different standard of care than a general practitioner. See MCL 

600.2912a(1); Cox v Bd of Hosp Managers for City of Flint, 467 Mich 1, 17 n 17; 651 NW2d 

356 (2002). The applicable standard is enumerated by MCL 600.2912a(1), which provides, in 

pertinent part:

[I]n an action alleging malpractice, the plaintiff has the burden of proving that in 

light of the state of the art existing at the time of the alleged malpractice:

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(b) The defendant, if a specialist, failed to provide the recognized standard 

of practice or care within that specialty as reasonably applied in light of the 

 3 Daubert v Merrell Dow Pharm, Inc, 509 US 579; 113 S Ct 2786; 125 L Ed 2d 469 (1993).

4 Such expert testimony is unnecessary “when the lack of professional care is so manifest that it 

would be within the common knowledge and experience of the ordinary layman. . . .” Sullivan v 

Russell, 417 Mich 398, 407; 338 NW2d 181 (1983) (quotation marks and citation omitted).
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facilities available in the community or other facilities reasonably available under 

the circumstances. . . .

Although this standard for specialists is sometimes referred to as a “national” standard of care, 

see, e.g., Jalaba v Borovoy, 206 Mich App 17, 22; 520 NW2d 349 (1994), that is a misnomer, 

Cox, 467 Mich at 17 n 17. As explained in Cox:

The term “national,” . . . is not an accurate description of the statutory standard of 

care for specialists. The plain language of subsection (b) states that the standard of 

care is that “within that specialty as reasonably applied in light of the facilities 

available in the community or other facilities reasonably available under the 

circumstances.” Under the plain language of the statute, then, the standard of care 

for both general practitioners and specialists refers to the community. [Id.

(citation omitted).]

Turning to the facts of this case, we agree with defendants that the trial court’s analysis 

was erroneous in several fundamental ways. First, the trial court erred by failing to consider and 

decide whether the challenged testimony of plaintiffs’ experts was substantively admissible 

before considering it for purposes of summary disposition under MCR 2.116(C)(10). See MCR 

2.116(G)(6); Maiden v Rozwood, 461 Mich 109, 121; 597 NW2d 817 (1999) (“[t]he reviewing 

court should evaluate a motion for summary disposition under MCR 2.116(C)(10) by 

considering the substantively admissible evidence actually proffered”) (emphasis added). In 

other words, the trial court was incorrect when it reasoned that its summary disposition ruling 

rendered defendants’ Daubert motion “moot”. On the contrary, the substantive admissibility of 

such testimony was a key part of the summary disposition analysis—one the trial court 

neglected. Further, “a question is not moot if it will continue to affect a [party] in some 

collateral way,” In re Dodge Estate, 162 Mich App 573, 584; 413 NW2d 449 (1987), and 

defendants’ Daubert challenge had implications extending beyond summary disposition; as a 

motion in limine, it was aimed at precluding admission of the challenged expert testimony at 

trial. 

Second, the trial court applied an incorrect legal standard to determine the applicable 

standard of care, erroneously relying on the pertinent model jury instruction, M Civ JI 30.01,5

 5 M Civ JI 30.01 provides:

When I use the words “professional negligence” or “malpractice” with respect to the 

defendant’s conduct, I mean the failure to do something which a [ name profession ] of ordinary 

learning, judgment or skill in [ this community or a similar one / [ name particular specialty ] ] 

would do, or the doing of something which a [ name profession / name particular specialty ] of 

ordinary learning, judgment or skill would not do, under the same or similar circumstances you 

find to exist in this case.

It is for you to decide, based upon the evidence, what the ordinary [ name profession / 

name particular specialty ] of ordinary learning, judgment or skill would do or would not do 

under the same or similar circumstances.
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rather than the language of the statute that sets forth the applicable standard of care for 

specialists, MCL 600.2912a(1). Although model jury instructions “are intended to accurately 

state applicable law,” they do not constitute legal authority. Moore v City of Detroit, 252 Mich 

App 384, 387; 652 NW2d 688 (2002) (emphasis added). Conversely, it is well-settled that MCL 

600.2912a(1) does authoritatively “set[] forth the standards of care for general practitioners and 

specialists.” Cox, 467 Mich at 16. Therefore, when considering the applicable standard of care

for purposes of summary disposition, the trial court should have relied on the actual language of 

MCL 600.2912a(1), not the model jury instruction’s attempt to paraphrase that statute for lay 

jurors.

Third, the trial court erred by determining that it could not consider medical literature as 

Daubert evidence. “Under MRE 702, it is generally not sufficient to simply point to an expert’s 

experience and background to argue that the expert’s opinion is reliable and, therefore, 

admissible.” Edry v Adelman, 486 Mich 634, 642; 786 NW2d 567 (2010). “[T]he whole point 

of Daubert is that experts can’t speculate. They need analytically sound bases for their opinions, 

and it is axiomatic that an expert, no matter how good his credentials, is not permitted to 

speculate.” Id. at 642 n 6 (quotation marks, citations, and brackets omitted). “[W]hile not 

dispositive, a lack of supporting literature is an important factor in determining the admissibility 

of expert witness testimony.” Id. at 640. Likewise, as our Supreme Court has explained several 

times, pursuant to MCL 600.2955(1) a court must consider the peer-reviewed medical literature 

cited by the parties when entertaining a Daubert challenge. Elher, 499 Mich at 28. Scholarly 

publications, peer-reviewed studies, and FDA publications are all “examples of objective and 

verifiable evidence[.]” Krohn v Home-Owners Ins Co, 490 Mich 145, 178; 802 NW2d 281 

(2011). By holding otherwise, the trial court erred. And because its error in that regard formed 

part of the foundation for its ruling concerning the reliability of the challenged testimony (i.e., its 

admissibility under MRE 702 and MCL 600.2955(1)), the resulting ruling was “necessarily an 

abuse of discretion.” See Elher, 499 Mich at 21.

Nevertheless, the trial court’s several errors do not necessarily warrant reversal of its 

ruling regarding summary disposition. “This Court will not reverse a trial court’s order of 

summary disposition when the right result was reached for the wrong reason.” Forest Hills Coop 

v City of Ann Arbor, 305 Mich App 572, 615; 854 NW2d 172 (2014). Accordingly, plenary de 

novo review is required to determine whether the trial court ultimately reached the correct result. 

A. SUBSTANTIVE ADMISSIBILITY OF THE CHALLENGED EXPERT TESTIMONY

As explained in Rock, 499 Mich at 260, “[a] physician who testifies regarding the 

standard of care at issue must satisfy the requirements of MCL 600.2169(1).” Pursuant to MCL 

600.2169(2), when

determining the qualifications of an expert witness in an action alleging medical 

malpractice, the court shall, at a minimum, evaluate all of the following:

(a) The educational and professional training of the expert witness.

(b) The area of specialization of the expert witness.
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(c) The length of time the expert witness has been engaged in the active 

clinical practice or instruction of the health profession or the specialty.

(d) The relevancy of the expert witness’s testimony.

In the instant case, we agree with defendants that the trial court erred by considering Dr. 

Pappas’s standard-of-care testimony for purposes of summary disposition. Under MCL 

600.2169(1)(a), an expert witness may only offer testimony regarding the applicable standard of 

care for a specialist if the proposed expert was board-certified in the same specialty “at the time 

of the occurrence that is the basis for the claim or action.” Rock, 499 Mich at 262. Aside from 

Dr. Pappas’s deposition transcript, plaintiffs cite no evidence regarding his qualifications as an 

expert. Although Dr. Pappas discussed orthopedic surgery at length during his deposition, he 

was neither asked nor did he testify whether he was board-certified in orthopedics or any other 

specialty, let alone whether he was board-certified at the time the surgery in this case was 

performed. Accordingly, plaintiffs failed to establish that Dr. Pappas’s testimony concerning the 

applicable standard of care in this matter was substantively admissible, and it thus cannot be 

considered for purposes of this analysis.

However we disagree with defendants’ contention that the trial court erred by considering 

Dr. Hosalkar’s standard-of-care testimony for purposes of MCR 2.116(C)(10). To begin with, 

plaintiffs produced substantively admissible evidence establishing that Dr. Hosalkar was 

qualified under MCL 600.2169(1). Specifically, they produced his deposition testimony that he 

was board-certified in orthopedic surgery on the date in question and had devoted a majority of 

his professional time to the clinical practice of orthopedic surgery in the year preceding 

plaintiff’s surgery, practicing “mainly” orthopedics during that timeframe.

Furthermore, on this record we cannot conclude that Dr. Hosalkar’s testimony was 

substantively inadmissible under Daubert. In concert, MRE 702 and MCL 600.2955(1) “govern 

the inquiry into whether expert evidence is scientifically reliable.” Chapin v A & L Parts, Inc, 

274 Mich App 122, 127; 732 NW2d 578 (2007). MRE 702 provides:

If the court determines that scientific, technical, or other specialized 

knowledge will assist the trier of fact to understand the evidence or to determine a 

fact in issue, a witness qualified as an expert by knowledge, skill, experience, 

training, or education may testify thereto in the form of an opinion or otherwise if 

(1) the testimony is based on sufficient facts or data, (2) the testimony is the 

product of reliable principles and methods, and (3) the witness has applied the 

principles and methods reliably to the facts of the case.

On the other hand, MCL 600.2955(1) provides, in pertinent part:

In an action . . . for injury to a person . . . , a scientific opinion rendered by 

an otherwise qualified expert is not admissible unless the court determines that the 

opinion is reliable and will assist the trier of fact. In making that determination, 

the court shall examine the opinion and the basis for the opinion, which basis 

includes the facts, technique, methodology, and reasoning relied on by the expert, 

and shall consider all of the following factors:
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(a) Whether the opinion and its basis have been subjected to scientific 

testing and replication.

(b) Whether the opinion and its basis have been subjected to peer review 

publication.

(c) The existence and maintenance of generally accepted standards 

governing the application and interpretation of a methodology or technique and 

whether the opinion and its basis are consistent with those standards.

(d) The known or potential error rate of the opinion and its basis.

(e) The degree to which the opinion and its basis are generally accepted 

within the relevant expert community. As used in this subdivision, “relevant 

expert community” means individuals who are knowledgeable in the field of 

study and are gainfully employed applying that knowledge on the free market.

(f) Whether the basis for the opinion is reliable and whether experts in that 

field would rely on the same basis to reach the type of opinion being proffered.

(g) Whether the opinion or methodology is relied upon by experts outside 

of the context of litigation.

“[A]ll the factors in MCL 600.2955 may not be relevant in every case.” Elher, 499 Mich at 27. 

Additionally, “the trial court’s role as gatekeeper does not require it to search for absolute truth, 

to admit only uncontested evidence, or to resolve genuine scientific disputes.” Chapin, 274 

Mich App at 127. Rather, an expert opinion may be reliable even if it “is not shared by all others 

in the field or . . . there exists some conflicting evidence supporting and opposing the opinion[.]” 

Id. Put differently, “as long as the opinion is rationally derived from a sound foundation,” it is 

admissible. Id. “Gaps or weaknesses in the witness’ expertise are a fit subject for crossexamination, and go to the weight of his testimony, not its admissibility.” Wischmeyer v Schanz, 

449 Mich 469, 480; 536 NW2d 760 (1995).

At root, defendants’ argument is that because there is no medical literature directly 

supporting Dr. Hosalkar’s opinion, it is unreliable and thus inadmissible. The parties spend a 

great deal of their respective briefs debating the substance of the medical literature, with both 

sides inexorably concluding that such literature supports their position. This ignores the fact that 

every expert deposed in this case opined that there was no authoritative medical literature that is 

directly on point. Moreover, defendants ignore the fact that while a lack of supporting literature 

“is an important factor,” it is not dispositive. See Elher, 499 Mich at 23. In this case, given the 

experts’ consensus that no authoritative literature exists in support of either side’s position, 

plaintiffs cannot be faulted for failing to produce such literature.

Also, we disagree with defendants’ assertion that the cited medical literature does not 

offer any support for Dr. Hosalkar’s standard-of-care testimony. Collectively, such literature 

establishes that, beginning in at least 2009, there was a growing concern within the orthopedic 

community that the intraarticular use of bupivacaine pain pumps was unsafe. Although such 

literature may not directly support every aspect of Dr. Hosalkar’s standard-of-care testimony, it 
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lends credence to his opinion that, at the time in question here, the use of a bupivacaine pain 

pump following arthroscopic knee surgery—whether intraarticularly or subcutaneously—fell 

below the recognized standard of practice or care for board-certified orthopedic surgeons. At a 

minimum, the literature shows that Dr. Hosalkar’s opinion was rooted in hard science, not 

merely speculation about effects that bupivacaine might have.

In sum, we discern no reason that Dr. Hosalkar’s standard-of-care testimony would be 

inadmissible at trial. Hence, it is substantively admissible, and it may be considered for purposes 

of our ensuing summary disposition analysis.

B. SUMMARY DISPOSITION UNDER MCR 2.116(C)(10)

Considering all of the substantively admissible record evidence in the light most 

favorable to defendants, as the nonmoving parties, we conclude that partial summary disposition 

in plaintiffs’ favor is unwarranted. Several genuine issues of material fact remain with regard to 

the applicable standard of care and whether Dr. Mendelson breached it.

Indeed, in their brief on appeal, plaintiffs inadvertently acknowledge one such genuine 

issue of material fact, asserting that “there is a question of fact as to whether the pain pump at 

issue was placed intra-articularly or subcutaneously.” Plaintiffs are correct. Although Dr. 

Mendelson testified unequivocally that the pain pump was placed subcutaneously, and that he 

had “never inserted a pain pump intraarticularly,” there is circumstantial evidence suggesting 

that his testimony in that regard might be either mistaken or intentionally false. (Emphasis 

added.) From such evidence, and in light of the evidence that it was widely known that 

intraarticular placement of a pain pump was associated with chondrolysis, a rational juror could 

infer that Dr. Mendelson’s testimony regarding the placement of the pain pump was either 

mistaken or intentionally false. Hence, a genuine issue of material fact remains whether the 

pump was placed intraarticularly or subcutaneously.

Additionally, as several of the expert witnesses noted, even assuming that the pain pump 

was placed subcutaneously, there is a dearth of evidence about where, exactly, it was placed 

under plaintiff’s skin. Accordingly, there is no evidence of how proximate the pain pump was to 

the site of plaintiff’s arthroscopy. Consequently, there are at least two issues of fact with regard 

to where the pain pump was placed, and those factual disputes are decidedly material. Without a 

factual determination of what Dr. Mendelson actually did, and how he did it, it cannot be 

determined whether his conduct violated the applicable standard of care. 

Finally, and contrary to the trial court’s conclusion, there is a genuine dispute regarding 

the applicable standard of care. Dr. Mendelson opined that based on the existing literature when 

plaintiff’s surgery was performed in 2012, it would not have been a violation of the standard of 

care for an orthopedic surgeon to place a bupivacaine pain pump intraarticularly following knee 

arthroscopy. Likewise, Dr. Denzin expressed the opinion that whether the intraarticular use of a 

Bupivacaine pain pump constituted a deviation from the standard of care at that time depended 

on the unique circumstances of the given case, noting that doing so might have been appropriate 

“if there was some reason to think that [plaintiff’s] pain problem would have been excessive[.]” 

Dr. Denzin further testified that although subcutaneous placement of a pain pump following 

arthroscopic surgery is unnecessary “most of the time,” every patient is unique. From such 
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testimony, a reasonable juror could conclude that either intraarticular or subcutaneous placement 

of a bupivacaine pain pump accorded with the applicable standard of care under the 

circumstances of this case.

We recognize that both Dr. Mendelson and Dr. Denzin made other statements that are 

arguably inconsistent with their standard-of-care testimony, and Dr. Hosalkar vigorously 

disagreed with their opinions. But “doubts pertaining to credibility, or an opposing party’s 

disagreement with an expert’s opinion or interpretation of facts, present issues regarding the 

weight to be given the testimony, and not its admissibility.” Surman v Surman, 277 Mich App 

287, 309; 745 NW2d 802 (2007). “The extent of a witness’s expertise is usually for the jury to 

decide.” Id. Accordingly, for these purposes, it is improper to gauge the credibility of the expert 

witnesses. See Bank of America, NA v Fidelity Nat’l Title Ins Co, 316 Mich App 480, 512; 892 

NW2d 467 (2016) (“A trial court may not weigh evidence when ruling on a summary disposition 

motion, or make credibility determinations.”) (citations omitted). Given the conflicting 

testimony from qualified experts in this case, it must be left for the trier of fact to decide which 

expert or experts to believe.

We reverse and remand for further proceedings consistent with this opinion. We do not 

retain jurisdiction. 

/s/ Michael J. Kelly

/s/ Kathleen Jansen

/s/ Patrick M. Meter