delivered the opinion of the court:
Plaintiff appeals from an order of the circuit court which granted the motions for summary judgment of defendants Bethlehem Steel Corporation and Industrial Sling Company. Defendant Northern Engineering Corporation is not a party to this appeal. Plaintiff contends that the trial court erred in entering summary judgment against him because expert testimony cannot provide a basis for overcoming the sufficiency of allegations in the complaint. Plaintiff also argues that the expert’s opinion in the instant case did not eliminate all genuine issues of material fact set up by the complaint. For the reasons which follow, we affirm in part and reverse and remand in part.
Count I of plaintiff’s unverified second amended complaint alleged that defendants manufactured and distributed cable to plaintiff’s employer and that the cable was used on a crane to hold a metal block weighing between 400 and 500 pounds. Plaintiff alleged that the cable was designed and intended for this use and that the cable broke and severed, causing him personal injury. Count I of the second amended complaint sought recovery under a strict products liability theory, alleging in paragraph 7 three alternative factual bases for recovery. These were that the cable was defective at the time that it left the defendants’ possession and control in: (a) failing to support a load well within its capacity; (b) failing to carry such a load due to lack of metallurgy integrity; and (c) failing to withstand normal wear and tear in normal use so as to support a load well within its capacity. The defendants filed separate answers denying the material allegations of the second amended complaint.
Defendants’ motions for summary judgment set forth that the expert retained by plaintiff to inspect and study the wire rope testified in a discovery deposition that the cable was not defective and that, in his opinion, the accident was not caused by any improper or defective condition of that product. The motion included the deposition of Sheldon Mostovoy, which disclosed the following. He is an associate professor of metallurgical and materials engineering at the Illinois Institute Technology, and he examined several sections from the failed as well as the intact portions of the cable. His examination revealed that the wires comprising the cable contained ductible overload or tensile failures but no brittle failures. He stated that these failures were caused by “gross overload” rather than by metallurgical defects such as nicks, seams, gouges, or wires rolled in laps. Such defects could have caused a brittle failure, which Mostovoy characterized as a “snapping” type of failure characteristic of improperly manufactured cable. He indicated that the tensile failures which he found in the cable were caused by the deformation of the component wires under stress and their subsequent failure to assume their original shape. This caused a narrowing or “necking” of the wires which in turn diminished their strength leading to the break in the cable. Although Mostovoy stated that he found nothing to indicate that the manufacturer of the cable was responsible for the failure, he also noted that he had no knowledge of the specific physical properties of the specific wires. He stated “[f]or an example, if that wire was made from an improperly heat treated or improperly manufactured wire, then those tensile overloads might have come at loads that would be substantially below the ones that are claimed for that wire. And so I would have had to have done additional tests to verify that. I did not do them.” Mostovoy stated that additional testing would not change his opinion that the failure of the cable was due to an overload rather than a “defect” in the cable.
Plaintiff produced no documents or other depositions to contradict Mostovoy’s statements. The trial court entered summary judgment for defendants, and plaintiff has appealed.
Opinion
The rules governing summary judgments are well settled. “A defendant may, at any time, move with or without supporting affidavits for a summary judgment in his or her favor as to all or any part of the relief sought against him or her.” (Ill. Rev. Stat. 1981, ch. 110, par. 2 — 1005(b).) Further, “[t]he judgment sought shall be rendered without delay if the pleadings, depositions, and admissions on file, together with the affidavits, if any, show that there is no genuine issue as to any material fact and that the moving party is entitled to a judgment as a matter of law.” (Ill. Rev. Stat. 1981, ch. 110, par. 2— 1005(c); see also Fooden v. Board of Governors (1971),
Plaintiff asserts that summary judgment cannot be based on the opinion of an expert witness adduced at a deposition. Plaintiff notes correctly that a jury is not bound to accept the opinion of an expert on an ultimate issue. (Merchants National Bank v. Elgin, Joliet & Eastern Ry. Co. (1971),
In the area of medical malpractice the uncontradicted affidavit of an expert witness is generally sufficient to support entry of summary judgment. (Bennett v. Raag (1982),
It is elementary that the issues are raised initially by the complaint and answer and that on a motion for summary judgment a party cannot rely on his pleading in the face of contradictory affidavits. (See Carruthers v. B. C. Christopher & Co. (1974),
Plaintiff contends that in the instant case Mostovoy’s deposition testimony, although uncontradicted, nevertheless does not entitle defendants to judgment. The question before us thus becomes whether the second amended complaint and the answer thereto created any issues of material fact which were not addressed by the uncontradicted statements in the deposition.
Our review of the record indicates that Mostovoy’s opinion that the cable in question contained no “defects” rebutted the allegation in subparagraph (b) of paragraph 7 that the cable lacked metallurgical integrity. Accordingly, plaintiff could not rely on his complaint to create a genuine issue of material fact but was obliged to present some factual basis that would arguably entitle him to a judgment upon the applicable law. (Yusuf v. Village of Villa Park (1983),
The expert also testified that the failure of the cable was due to “gross overload” which could have occurred at loads “substantially below” those claimed for the cable. Construing the deposition strictly against the movant and liberally in favor of the opponent, as indeed we must (Spancrete of Illinois, Inc. v. Brickman (1979),
Defendants argue that summary judgment was properly entered by the trial court because the expert indicated that further testing would not change his opinion. The expert did state that further testing would not change his opinion, but it is clear from the record that by this statement he meant that further testing would not convince him that the cable severed due to a brittle failure rather than a tensile failure. Mostovoy did not indicate that a tensile failure could not be caused by improper manufacture and indeed he stated the opposite to be true. Construing the deposition against the movant (see Heller v. Sullivan (1978),
Defendants contend that our holding conflicts with the holdings of Coleman v. Verson Allsteel Press Co. (1978),
As this court has indicated, it is the ratio decidendi of a case which forms the basis for application of principles of stare decisis. (Panchinsin v. Enterprise Cos. (1983),
For the foregoing reasons, the order granting summary judgment is affirmed as to the issue of liability predicated on subparagraph (b) of paragraph 7 of count I of the second amended complaint, and is reversed as to the issues of liability predicated on subparagraphs (a) and (c) thereof. The case is remanded to the trial court for further proceedings consistent herewith.
Affirmed in part; reversed and remanded in part.
LORENZ, J., concurs.
