Can trial courts deny expert witness substitutions in medical malpractice cases? Boice v. Marble Explained

In medical malpractice litigation, the availability of qualified expert witnesses can make or break a case. The Utah Supreme Court’s decision in Boice v. Marble provides important guidance on when trial courts must allow parties to substitute expert witnesses after scheduling deadlines have passed.

Background and Facts

R. Lane Boice suffered a spinal cord injury in 1992 and underwent cervical surgery. During his rehabilitation at Western Rehabilitation Institute under Dr. Stephen Marble’s care, an incident with a wheelchair caused additional injury, resulting in permanent loss of function in his left wrist, hand, and fingers. Boice sued Marble for medical malpractice. After Boice’s designated physiatry expert, Dr. Bruce Newton, withdrew from the case in November 1996, Boice moved to substitute Dr. Jayne Clark as his expert witness. The trial court denied this motion, finding the substitution untimely, and subsequently granted summary judgment for Marble.

Key Legal Issues

The case presented three critical issues: whether the trial court properly denied Boice’s motion to substitute an expert witness, whether it correctly prohibited his treating physician from testifying as an expert, and whether it appropriately struck expert affidavits from other medical professionals. The court also addressed the fundamental question of what qualifies as sufficient expert testimony in medical malpractice cases involving multiple medical specialties.

Court’s Analysis and Holding

The Utah Supreme Court reversed, holding that the trial court abused its discretion in denying the expert substitution motion. The court emphasized that unlike cases where parties simply fail to meet deadlines, Boice had properly designated an expert who withdrew unexpectedly. The motion for substitution was filed before the extended discovery cut-off and two months before trial, providing adequate time to avoid prejudice through depositions or continuances. The court also found error in striking Dr. Cantu’s affidavit, ruling that a neurosurgeon could testify about post-operative care standards that overlap with physiatrist practices under the Burton v. Youngblood standard.

Practice Implications

This decision reinforces that courts must balance rigid adherence to scheduling orders against fairness when unforeseen circumstances arise. Practitioners should immediately seek substitution when experts withdraw unexpectedly, demonstrating good cause and proposing solutions to avoid prejudice. The ruling also clarifies that experts from related medical specialties may testify about overlapping standards of care if they establish proper foundation showing common treatment methods or knowledge of the other specialty’s standards.