After a trial to a jury, the defendant was convicted of the crime of assault in the first degree for violation of General Statutes 53a-59(a)(1). In his *Page 610 appeal,1 the defendant assigns as error (1) the trial judge's conduct toward the defendant's counsel; (2) certain evidentiary rulings; and (3) the trial judge's charge to the jury on the issue of self-defense.
The facts may be summarized as follows: The defendant and the victim, after having been introduced in a telephone conversation in 1980, had contact with each other mostly through letters. She saw him for a second time on January 6, 1982. After she had sexual relations with the defendant on that date, a disagreement ensued between them regarding their future plans and overall relationship. Thereafter, the defendant allegedly attacked the victim with a knife, inflicting stab and slash wounds to the victim's head, neck and hand. From early afternoon until the evening, the defendant drove the victim from Shelton to Ashford. In Ashford, the defendant told the victim to walk to a house and get assistance.
On February 7, 1982, the defendant was arrested and charged with kidnapping in the first degree and assault in the first degree. He was found guilty of the assault charge only and sentenced to a term of twelve years.
The defendant claims that the trial court's numerous interruptions, the chastisement of his counsel and the failure to permit his counsel to speak on the record deprived him of his right to a fair trial. We agree.
The function of the court in a criminal trial is to conduct a fair and impartial proceeding. Glasser v. United States, 315 U.S. 60, 82, 62 S.Ct. 457, 86 L.Ed. 680 (1942); State v. Bember, 183 Conn. 394, 401,439 A.2d 387 (1981); see also Wojculewicz v. Cummings,145 Conn. 11, 19, 138 A.2d 512, cert. denied, 356 U.S. 969, *Page 611 78 S.Ct. 1010, 2 L.Ed.2d 1075 (1958). The trial judge must avoid taking an apparent position of advocacy in the case before him. State v. Bember, supra, 402; State v. Echols, 170 Conn. 11, 13-14, 364 A.2d 225 (1975). Judges in this state, however, are given wide latitude to comment fairly and reasonably upon evidence received at trial, but the court must refrain from making improper remarks which are indicative of favor or condemnation, or which disparage a defendant before the jury. Id.; see also La Chase v. Sanders, 142 Conn. 122,125, 111 A.2d 690 (1955). Even though a judge may take all reasonable steps necessary for the orderly progress of the trial, he must always be cautious and circumspect in his language and conduct. Cameron v. Cameron, 187 Conn. 163, 169, 444 A.2d 915 (1982).
It is evident from a review of the transcript that a departure from these standards occurred in the trial court. On cross-examination of the victim, the trial judge interrupted counsel for the defendant on many occasions.2 Where, as in the present case, much of the *Page 612 evidence of the commission of a crime is based upon the testimony of the complainant, the court must allow the defendant a broad latitude on cross-examination. Any undue interference may seriously curtail the legitimate and proper defense of the accused. State v. Gionfriddo, 154 Conn. 90, 96, 221 A.2d 851 (1966). The repeated interruptions and rebukes of counsel by the trial judge prejudiced the defendant's case, thereby denying him a fair trial. Id., 97. *Page 613
In addition, the judge made prejudicial statements to the jury, embarrassed counsel and denied counsel the right to speak on the record.3 We find that the court's *Page 614 remarks and conduct far exceeded the permissible bounds of a judge's function during a trial. The defendant's trial was not a fair one since it was not conducted *Page 615 in all material things in substantial conformity to law, before an impartial judge and an unprejudiced jury in the atmosphere of judicial calm. See Wojculewicz v. Cummings, supra. We therefore conclude that the trial court's conduct constituted reversible error. Since the defendant must be afforded a new trial, his other claims of error will be reviewed by us.
"The great weight of authority is that photographs, even though gruesome, are admissible in evidence when otherwise properly admitted if they have a reasonable tendency to prove or disprove a material fact in issue or shed some light upon some material inquiry . . . A photograph, the tendency of which may be to prejudice the jury, may be admitted in evidence if, in the sound discretion of the court, its value as evidence outweighs its possible prejudicial effect." State v. Haskins,188 Conn. 432, 452-53, 450 A.2d 828 (1982); State v. LaBreck, 159 Conn. 346, 351, 269 A.2d 74 (1970).
The state offered the evidence to show the nature, location and extent of the injuries and to give the jury *Page 616 the best evidence available that this was a serious physical injury4 rather than merely a physical injury. The prosecution, with its burden of establishing guilt beyond a reasonable doubt, must be given the right to prove every essential element of the crime by the most convincing evidence it is able to produce. State v. Bember,183 Conn. 394, 408, 439 A.2d 387 (1981); State v. Piskorski, 177 Conn. 677, 701-702, 419 A.2d 866, cert. denied, 444 U.S. 935, 100 S.Ct. 283, 62 L.Ed.2d 194 (1979). The trial court exercises a broad discretion in admitting such evidence, and its determination will not be disturbed on appeal unless a clear abuse of that discretion is shown. State v. Piskorski, supra. Such abuse has not been demonstrated here.
The admissibility of a hypothetical question calls for the exercise of sound discretion as to whether the question, even though it does not contain all of the facts in evidence, presents the facts in such a manner that they bear a true and fair relationship to each other and to the whole evidence in the case, whether it is not so worded as to be likely to mislead or confuse the jury and, further, whether it is not so lacking as to be without value in the decision of the case. Healy v. White,173 Conn. 438, 446-47, 378 A.2d 540 (1977).
The question did not ask Bush to reach a conclusion on the basis of a misleading presentation of the facts. It merely asked him to project the results of a hypothetical situation. We thus conclude that the trial court did not abuse its discretion in admitting the testimony.
After an examination of the letters and photographs offered by the defendant, the trial court concluded that they added nothing relevant to the victim's testimony regarding her relationship with the defendant of which the jury was not aware. It is well within the discretion of the trial court to exclude evidence if its relevance is so slight and inconsequential that to admit it would distract attention which should be concentrated on other evidence which bears directly on the vital issues in the case. State v. Gaynor, 182 Conn. 501, 511,438 A.2d 749 (1980); State v. Varricchio, 176 Conn. 445,450, 408 A.2d 239 (1979). We hold that the trial court did not err in excluding the evidence.
There is error, the judgment is set aside and a new trial is ordered.
In this opinion the other judges concurred.