By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. When Does a Pre-Existing Condition Matter to Injury Causation? In personal injury cases, the presence of a pre-existing condition can make injury causation more difficult to evaluate. A patient may have had an underlying spinal condition before an accident. That does not, by itself, establish wh

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. A medical expert's role is not simply to reach a conclusion. The opinion must be supported by evidence, explained clearly, and able to withstand scrutiny. For attorneys, understanding what makes an expert opinion defensible can be especially important when preparing for deposition or trial. What

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. A pre-existing condition does not automatically mean that a reported injury is unrelated to a subsequent accident. At the same time, the presence of symptoms after an accident does not automatically establish that the accident caused the condition. For attorneys evaluating a personal injury case

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. A medical diagnosis can explain what is wrong with a patient. It does not, by itself, establish what caused the condition. This distinction is especially important in personal injury and medical-legal cases, where attorneys may need to determine whether the available evidence supports a connecti

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. Selecting the right medical expert can have a significant impact on how a medically complex case is evaluated. An expert's role is not simply to provide an opinion, but to help attorneys understand the medical evidence, evaluate causation, and explain complex clinical issues clearly and objectiv

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. Strong cases are built on objective analysis, not assumptions. Two experts review the same accident. They examine the same medical records, review the same diagnostic imaging, and consider the same reported mechanism of injury. Yet they arrive at very different conclusions. How is that possible?

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. Low speed rear-end crashes with minimal or no visible vehicle damage often spark significant controversy in litigation. Occupants may report neck and related symptoms, while insurers and defense experts argue that the impact was “too minor” to cause injury. An evidence-based approach uses crash

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management. Expert witnesses now sit at the center of many technically complex cases, particularly when biomechanical or medical issues drive liability or damages. Courts increasingly demand that experts combine sound science, neutrality, and clear communication that meaningfully assists fact-finders (Kale,

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management In today’s legal climate, personal injury cases increasingly rely on translating clinical and biomechanical data into a clear, defensible narrative that meets modern admissibility standards for expert evidence.1 Conflicting medical records, incomplete imaging, and vague causal explanations often

By Dr. Steven B. Ross, DC, FASBE, DAAPM Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management Introduction In California litigation, the admissibility of expert testimony often determines the outcome in personal injury and medical-legal cases. The challenge is to present biomechanical and clinical evidence in a way that satisfies both scientific rigor and legal standards. When essential b

When most people think of whiplash, they picture the head snapping backward. In reality, significant cervical spine injury often occurs during rapid forward bending — hyperflexion. High-rate flexion can strain ligaments beyond physiological limits, producing microfailure and subtle instability that may not appear on routine imaging. In spine litigation, mechanism matters more than vehicle damage.