| 20. Mohney vs. United States Hockey
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| Date of Decision: 1/23/2004
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Jurisdiction: Federal
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| Docket Numbers: 97-7417
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Court: Ohio, Northern District
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| Area of Law: Products Liability
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Judge(s): DAVID A. KATZ, U. S. DISTRICT JUDGE
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Gatekeeping Issue: Federal Cases;Kumho, Federal Rules;Rule 702, Federal Rules;Rule 703, Federal Cases;Daubert
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| Expert
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Discipline
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Area of Expertise
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Disposition
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| Norman Johanson |
Engineering;Mechanical Engin. |
Alleged product defects associated with helmet-mask |
Testimony admitted in part, barred in part. |
| Dr. Richard Collins, Ph.D. |
Engineering;Biomechanical Engin., Engineering;Mechanical Engin. |
Mechanism by which injuries sustained |
Testimony inadmissible. |
| Dr. Patrick J. Bishop, Ph.D. |
Engineering;Biomechanical Engin. |
Biomechanics and quadriplegia |
Daubert challenge denied as moot. |
| Dr. Joseph Torg, M.D. |
Medicine;Orthopaedic Surgery |
Cervical spine injuries |
Daubert challenge denied as moot. |
| Dr. Lawrence Thibault, Ph.D. |
Engineering;Biomechanical Engin. |
Traumatic injury |
Daubert challenge denied as moot. |
| David Halstead |
Engineering;Biomechanical Engin. |
Protective devices used in sporting equipment; Helmet safety |
Daubert challenge denied as moot. |
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Case Summary:
Levi Mohney became a quadriplegic as a result of an incident that occurred while he participated in a scrimmage that was part of a developmental hockey camp. Levi and another player became entangled, lost control, and collided with the boards causing Levi to sustain severe spinal damage at the C5-C6 level resulting in quadriplegia. At the time of the accident, Levi was wearing a helmet manufactured by Bauer and a face mask manufactured by Karhu. The mask was a cage type mask held in place by two j-clips. Plaintiffs asserted that the mask released allowing Levi's head to torque into a crown position when the right-hand side j-clip dislodged when the two screw-nut combinations affixing the j-clip to the helmet vibrated loose. The Mohneys retained the services of experts Johanson and Collins. Bauer asserted that the opinions and testimony of both Mr. Johanson and Dr. Collins should be excluded for failing to satisfy any of the four factors for determining reliability set forth in Daubert. Defendant also argued that there was substantial evidence indicating that Dr. Collins abandoned his role as a scientist and become a paid advocate of Plaintiffs. Johanson opined that the helmet-mask combination was incompatible as shown by the asymmetric fit as supported by his inspection and associated measurements. The court acknowledged that the expert's visual inspection was sufficient to demonstrate that the helmet and mask fit together asymmetrically. The expert's measurements represented an objective assessment regarding the cause of the fit, which could be verified and critiqued. Johanson's testimony regarding the incompatibility of the helmet and mask had a reliable basis. The expert next opined that the right-hand side j-clip immediately and simultaneously dislodged as the result of the already loose fitting screw- nut combinations vibrating apart when Levi first collided with the boards. The court excluded this testimony, since the expert admitted he did not attempt to determine the thread class of the screws, and made no effort to test whether the thread class on the left-hand side was or was not sufficient even though such testing could have been done. Collins opined the release of the mask resulted in the complete dissipation of the horizontal force acting on Levi's head. The complete and instantaneous dissipation of the horizontal force allowed the vertical force to dominate, resulting in a vertical torque that caused Levi's head to move from a face first position to a crown position. The court rejected defendants' claim that Collins abandoned his role. However, the court noted Collins conceded that the velocity of Levi's impact was probably double what he estimated and as a result the amount of time for the torque to occur was half of the 14.55 milliseconds he estimated. Collins's testimony clarified that determining the frame rate would have been of assistance in conducting his method of analysis. He also conceded that he did not have the dimensions of the ice rink when he made his estimate, even though it would have been easy to obtain the blue print defendant produced. The court concluded the aforementioned shortcomings in Collins's analysis combined with an overwhelming reliance on assumed values impugned the reliability of his analysis, especially in light of the novelty of his theory. The expert could have employed computer modeling. He also might have used sensitivity analysis by assuming not only different values for all the assumed values but also different speeds. The expert's testimony was barred. Bauer had retained the services of four expert witnesses. These experts include Dr. Patrick J. Bishop, Dr. Joseph Torg, Dr. Lawrence Thibault, and Mr. David Halstead. The court did not consider whether defendant's expert witnesses satisfied the Daubert requirements. The opinions of Mr. Johanson and Dr. Collins did not satisfy the requirements set forth in Daubert. Plaintiff's failure to warn claim failed without considering the admissibility of any expert testimony. Therefore, the Mohneys motion to exclude defendant's expert witnesses was denied as moot. Defendant's motion for summary judgment was granted.
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