The accused brought a pre‑trial motion challenging the language Crown expert witnesses could use when describing injuries to an infant in a criminal prosecution.
The defence objected to analogies describing the force required to cause the injuries, the use of the term “massive” for a subdural hematoma, descriptions of extensive bruising, evidence regarding the absence of any explanation for the injuries, and a graphic description of injuries to the child’s genitalia.
The court held that analogies explaining the magnitude of force could assist the jury in understanding scientific evidence and were permissible.
The term “massive” to describe the subdural hematoma was allowed as a medically accurate and understandable descriptor, and the Crown could lead evidence regarding the lack of explanation for the injuries as part of the medical history relied upon by clinicians.
However, the court directed that inflammatory wording describing genital injuries should be replaced with a more neutral description.