--- title: "Biomechanical Engineering Expert Witness’ Testimony As to General Causation of Injuries held to be Permissible" meta: "og:description": "Biomechanical Engineering Expert Witness' Testimony on the Severity of the Collision Admitted" "og:title": "Biomechanical Engineering Expert Witness’ Testimony As to General Causation of Injuries held to be Permissible" author: "Expert Witness Profiler" description: "Biomechanical Engineering Expert Witness' Testimony on the Severity of the Collision Admitted" --- # Biomechanical Engineering Expert Witness’ Testimony As to General Causation of Injuries held to be Permissible Posted on March 12, 2024 by Expert Witness Profiler Plaintiff Ernst Nicolas suffered severe injuries to his cervical spine, lumbar spine, right knee, and left shoulder in a motor vehicle accident that took place on September 1st, 2018, on JF Kennedy Blvd at the intersection with 63rd Street, in Jersey City. Nicolas was a rear seat passenger in a Lyft vehicle when a truck owned by Defendant ABF Freight Systems, and driven by Randy Rivers, rear-ended a Chevrolet Cobalt, which then collided with the Lyft vehicle. Defendant conceded liability when Plaintiff filed a lawsuit. The only remaining issue in this case is to determine the extent of damages resulting from the accident. Defendant retained a biomechanical engineer, William Bussone to assess the following: - the severity of the collision - the forces imparted to the body of the Plaintiff as a result of the accident - the absence of any mechanism to cause any permanent injury to the cervical spine, thoracic spine, lumbosacral spine and/ or extremities - whether the subject accident caused the alleged injuries Plaintiff filed a _Daubert_ motion challenging Bussone’s testimony because he is not a licensed medical doctor. For the reasons set forth below, the Court rejected the _Daubert_ challenge against Bussone’s testimony. ## **Biomechanical Engineering Expert Witness** [William Bussone](https://expertwitnessprofiler.com/expert-witness/William-Bussone/1555889) is a biomechanical engineer with an M.S. in Mechanical Engineering (from Virginia Tech) and a B.S. in Biomedical Engineering (from Michigan Tech). He has testifying experience and more than 15 years research experience in biomechanics, accident reconstruction, and human injury / tolerance to mechanical load. ## **Discussion by the Court** Plaintiff alleged that Bussone lacked the requisite qualifications to comment on the diagnosis, treatment or prognosis of an injured person. According to the Plaintiff, Bussone was unqualified to provide testimony as to medical causation. #### **Bussone is Unqualified to Comment on any Area of Medicine** The Court noted Bussone’s significant experience in the field of biomechanical engineering. After all, Bussone engaged in research regarding injury biomechanics for more than fifteen years. He read and analysed the medical records to evaluate the extent, distribution and severity of injuries as they related to biomechanical analysis. Bussone has a bachelor’s degree in biomedical engineering and a master’s degree in mechanical engineering. He has conducted research on “human tolerance to impact and acceleration loading in vehicles” and published the findings in peer-reviewed articles. The scope of Bussone’s proposed testimony concerned the general causation of injuries in motor vehicle accident cases, such as this one. Defendant asserted that it had no intention to have Bussone opine about the diagnosis, treatment or prognosis of any injury. The Court subsequently held that Bussone’s expert testimony was permissible as biomechanical experts are permitted to opine as to general causation since he will not be opining on Plaintiff’s particular alleged injuries and medical care. #### **Bussone’s Opinions are not Based on Sufficient Facts and Data** Both parties disagreed about whether Plaintiff’s alleged injuries were caused by the accident. Plaintiff was of the opinion that Bussone’s conclusions warranted exclusion on that basis. The Court, citing [In re Fosamax Products Liability Litigation 645 F. Supp. 2d 164 (S.D.N.Y. 2009)](https://casetext.com/case/in-re-fosamax-products-liability-litigation-12/), observed that the jury will be the judge of whether Plaintiff’s alleged injuries were caused by the accident and it was the jury’s responsibility to assess what weight to be given to the proffered testimony. Expert testimony is excluded when speculative, conjectural, or based on unrealistic assumptions implying bad faith. The Court found Bussone’s opinions grounded in adequate facts and data, lacking signs of bad faith ## **Held** The Court denied Plaintiff’s motion to strike the testimony of William Bussone. The Court has not arrived on an outcome for this case since the remaining issues involved in this case still await resolution. ## **Key Takeaways:** 1. **Expertise and Qualifications Matter:** The Court noted Bussone’s significant experience in biomechanical engineering, including over fifteen years of research in injury biomechanics. His educational background in biomedical and mechanical engineering further solidified his qualifications. 2. **Scope of Testimony:** Bussone’s testimony focused on the general causation of injuries in motor vehicle accident cases, avoiding specific diagnoses, treatments, or prognoses of injuries, which were beyond the scope of his proposed testimony. 3. **Sufficiency of Facts and Data:** Expert testimony must be based on sufficient facts and data to be admissible. The Court found no indications of speculation, conjecture, or bad faith in Bussone’s conclusions. ## **Case Details:** --- ## **You Might Also Like** ![Human Resources Expert Allowed to Opine on Termination](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-22T200052.311.jpg) [**Human Resources Expert Allowed to Opine on Termination**](https://expertwitnessprofiler.com/biomechanical-engineering-expert-witness-testimony-as-to-general-causation-of-injuries-held-to-be-permissible/human-resources-expert-allowed-to-opine-on-termination)![Neuropsychology Expert Not Allowed to Opine on Cognitive Decline](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-22T144728.528.jpg) [**Neuropsychology Expert Not Allowed to Opine on Cognitive Decline **](https://expertwitnessprofiler.com/biomechanical-engineering-expert-witness-testimony-as-to-general-causation-of-injuries-held-to-be-permissible/neuropsychology-expert-not-allowed-to-opine-on-cognitive-decline)![Human Factors Expert Not Allowed to Opine on the Tile](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-21T191749.960.jpg) [**Human Factors Expert Not Allowed to Opine on the Tile**](https://expertwitnessprofiler.com/biomechanical-engineering-expert-witness-testimony-as-to-general-causation-of-injuries-held-to-be-permissible/human-factors-expert-not-allowed-to-opine-on-the-tile)![Insurance Expert Not Allowed to Opine on Legal Duties](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-21T155751.487.jpg) [**Insurance Expert Not Allowed to Opine on Legal Duties**](https://expertwitnessprofiler.com/biomechanical-engineering-expert-witness-testimony-as-to-general-causation-of-injuries-held-to-be-permissible/insurance-expert-not-allowed-to-opine-on-legal-duties)![Law And Legal Expert Not Allowed to Opine on Contract Formation](https://ewp-blog.expertwitnessprofiler.org/wp-content/uploads/2026/04/blog-pic-640X480-2026-04-20T213123.718.jpg) [**Law And Legal Expert Not Allowed to Opine on Contract Formation**](https://expertwitnessprofiler.com/biomechanical-engineering-expert-witness-testimony-as-to-general-causation-of-injuries-held-to-be-permissible/law-and-legal-expert-not-allowed-to-opine-on-contract-formation)