Personal injury expert witnesses

Expert class library · 14 classes

The reconstruction, medical and economic experts in injury cases: accident reconstruction, biomechanics, standard of care, life care plans and lost earnings.

Each class is defined by role and method, never by a person or a firm. Open one for what its testimony turns on, how it is attacked, and the rulings, each summarised from the opinion and linked to it.

Usually retained by plaintiffs

Life care planner

Medical needs assessment · Future care cost projection

Treating physician causation witness

Treatment record foundation · Temporal relationship reasoning

Premises security criminologist

Prior incident and calls-for-service analysis · Area crime data review

Spine injury causation surgeon

Review of imaging such as MRI and CT, before and after the incident · Clinical history, examination and temporal relationship

Usually retained by the defense

Biomechanical engineer

Injury mechanism analysis · Force and acceleration estimation

Retained by either side

Accident reconstructionist

Momentum and energy analysis · Event data recorder download

Forensic economist (lost earnings)

Worklife expectancy analysis · Earnings capacity projection

Medical standard-of-care expert

Standard of care comparison · Medical record review

Vocational rehabilitation expert

Transferable skills analysis · Labor market survey

Slip resistance and walkway safety expert

Tribometer testing (variable incidence tribometer, BOT-3000E) · ASTM F2508 validation and ANSI A326.3 comparison

Alcohol toxicology and retrograde extrapolation expert

Retrograde extrapolation · Widmark formula calculation

Workplace safety and OSHA compliance expert

OSHA regulation comparison · Job hazard analysis review

Mild TBI and post-concussion causation expert

Neurological examination · Glasgow Coma Scale and acute record review

Medical billing reasonable-value expert

Line-item bill review · CPT and HCPCS coding analysis

Recent rulings

The 12 most recent of 49 rulings in this practice, newest first. Each links to the free opinion on CourtListener and to the class it belongs to.

Outcome	Case	Court	Expert class
Admitted	Plyler v. CoxNo. 24-1445 (4th Cir. July 29, 2025)	4th Cir. 2025	Workplace safety and OSHA compliance expert
Exclusion reversed	Smith v. Norfolk Southern Railway Co.2025-Ohio-3122	Ohio Ct. App. 2025	Treating physician causation witness
Excluded	Stokes v. Forty Niners Stadium Management Co., LLCNo. H050639	Cal. Ct. App. 2025	Premises security criminologist
Admitted	Bunting v. District of Columbia CVS Pharmacy, LLCNo. 22-cv-766 (D.D.C. Feb. 7, 2024)	D.D.C. 2024	Slip resistance and walkway safety expert
Admitted	Dugan v. Hyatt Corp.No. ED111485	Mo. Ct. App. 2024	Premises security criminologist
Excluded	Gales v. Allenbrooke Nursing & Rehabilitation Center91 F.4th 433	6th Cir. 2024	Medical standard-of-care expert
Admitted	Leininger v. HeaneyNo. 2023-CA-0574 (La. Ct. App. 4 Cir. Aug. 15, 2024)	La. Ct. App. (4th Cir.) 2024	Mild TBI and post-concussion causation expert
Limited	Castro v. Schlumberger Technology Corp.No. 04-21-00420-CV	Tex. App. 2023	Spine injury causation surgeon
Limited	Doe v. Trustees of Dartmouth College2023 DNH 131	D.N.H. 2023	Forensic economist (lost earnings)
Exclusion reversed	In re Chefs' Produce of Houston, Inc.667 S.W.3d 297	Tex. 2023	Medical billing reasonable-value expert
Excluded	Johnson v. Friesen79 F.4th 939	8th Cir. 2023	Treating physician causation witness
Admitted	Kim v. American Honda Motor Co.86 F.4th 150	5th Cir. 2023	Accident reconstructionist

Other practice areas

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The library summarises public decisions for orientation; it is not legal advice. Read the opinion before relying on any ruling. No individual expert is named.