Commonwealth v. Senna

Following a jury trial, the defendant was convicted of assault and battery by means of a dangerous weapon causing serious bodily injury, and assault and battery by means of a dangerous weapon. In this appeal, he argues that the trial judge erred in delivering the jury instructions, that there was insufficient evidence to support his conviction, and that the judge abused her discretion in refusing to allow an expert witness. We affirm.

1. Jury instruction. The defendant claims the judge erred as a matter of law or abused her discretion in giving a vague or confusing jury instruction on the…